JP2023087652A - Humidity adjustment device - Google Patents

Abstract

To improve the energy efficiency of a humidity adjustment device using an adsorption material for adsorbing a water component.SOLUTION: In an adsorption isotherm of an adsorption material, when setting a range smaller than a first relative humidity value (RH1) as a first range (I), setting a range equal to or larger than the first relative humidity value (RH1), and equal to or smaller than a second relative humidity value (RH2)(RH2>RH1) as a second range (II), and setting a range exceeding the second relative humidity value (RH2) as a third range (III), a change of a moisture content of the adsorption material with respect to a change of relative humidity in the second range (II) is larger than a change of a moisture content of the adsorption material with respect to a change of relative humidity in the first range (I) and the third range (III). A water component is desorbed from the adsorption material in the vicinity of the first relative humidity value (RH1), and the water component is adsorbed to the adsorption material in the vicinity of the second relative humidity value (RH2).SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a humidity control device.

2. Description of the Related Art Conventionally, a humidity control apparatus using an adsorbent that adsorbs moisture in the air is known. When dehumidification is performed by a humidity control device, the air is dehumidified by causing an adsorbent to adsorb moisture contained in the air. The adsorbent that has adsorbed moisture is regenerated by heating and used again for dehumidification. On the other hand, when humidification is performed by a humidity control device, moisture is adsorbed from the moisture-containing air onto an adsorbent, and then the adsorbent is heated to desorb the moisture from the adsorbent and supply it to the air to be humidified.

In the humidity control apparatus disclosed in Patent Document 1, an adsorbent is supported on the surface of the heat exchanger, and the temperature of the heat exchanger is controlled so that the relative humidity range is such that the adsorbent can obtain the required amount of adsorption. are doing.

Japanese Unexamined Patent Application Publication No. 2004-294048

However, since adsorbents have different adsorption characteristics (adsorption isotherms) depending on the material, conventional humidity control devices do not control the heat source in consideration of the adsorption characteristics of each adsorbent. There is room for improvement.

An object of the present disclosure is to improve the energy efficiency of a humidity control apparatus using an adsorbent that adsorbs moisture in the air.

A first aspect of the present disclosure is a humidity control device (10, 110) using an adsorbent that adsorbs moisture in the air, wherein the temperature of the adsorbent or the relative humidity of the air supplied to the adsorbent is A control unit (95, 140) for controlling. In the adsorption isotherm of the adsorbent, the first range is less than the first relative humidity value, the second range is the first relative humidity value or more and the second relative humidity value (> the first relative humidity value) or less, and the With a third range above the second relative humidity value, the change in the moisture content of the adsorbent with respect to the change in relative humidity in the second range is the adsorbent with respect to the change in relative humidity in the first range and the third range greater than the change in moisture content of The control section (95, 140) desorbs moisture from the adsorbent near the first relative humidity value and causes the adsorbent to adsorb moisture near the second relative humidity value.

In the first aspect, the controller (95, 140) controls the temperature of the adsorbent or the relative humidity of the air supplied to the adsorbent in consideration of the adsorption properties of the adsorbent. Therefore, it is possible to suppress the temperature change range of the heat source for achieving the relative humidity range in which the adsorbent can obtain the required amount of adsorption, thereby improving the energy efficiency.

A second aspect of the present disclosure is the first aspect, wherein the slope of the adsorption isotherm of the adsorbent in the second range is the adsorption isotherm of the adsorbent in the first range and the third range is more than five times the slope of

In the second aspect, energy efficiency can be further improved.

A third aspect of the present disclosure is the first or second aspect, wherein the amount of change in the moisture content of the adsorbent in the second range is 50% or more of the maximum moisture content of the adsorbent.

In the third aspect, energy efficiency can be further improved.

A fourth aspect of the present disclosure is any one of the first to third aspects, wherein a difference between the second relative humidity value and the first relative humidity value is 40% or less.

In the fourth aspect, energy efficiency can be further improved.

A fifth aspect of the present disclosure is any one of the first to fourth aspects, wherein the vicinity of the first relative humidity value ranges from the first relative humidity value to −10%, The vicinity of the second relative humidity value ranges from the second relative humidity value to +10%.

In the fifth aspect, it is possible to control the heat source in consideration of the adsorption characteristics of the adsorbent, thereby suppressing a decrease in energy efficiency.

According to a sixth aspect of the present disclosure, in any one of the first to fifth aspects, the adsorbent is composed of a metal organic structure.

In the sixth aspect, an adsorbent with desired adsorption properties can be obtained.

According to a seventh aspect of the present disclosure, in any one of the first to sixth aspects, the adsorption/desorption unit includes the adsorbent and adsorbs moisture in the process air and desorbs the adsorbed moisture. (81, 82, 115A, 115B), a heat source (51, 52, 123, 133) for adjusting the relative humidity at which the adsorption/desorption section (81, 82, 115A, 115B) adsorbs and desorbs moisture, and the flow of the treated air and an acquisition unit (91, 92, 93, 94, 121, 131) for acquiring temperature and humidity data of the processed air, wherein the control unit (95, 140) controls the acquisition unit (91 , 92, 93, 94, 121, 131) controls the temperature of the heat sources (51, 52, 123, 133) based on the obtained temperature and humidity data.

In the seventh aspect, it is possible to control the temperature of the heat source to achieve a relative humidity range in which the adsorbent can obtain the required adsorption amount.

An eighth aspect of the present disclosure is the seventh aspect, wherein the adsorption isotherm of the adsorbent includes an adsorption line for adsorbing moisture and a desorption line for desorbing the adsorbed moisture. The adsorption/desorption units (81, 82, 115A, 115B) include adsorption units (81, 82, 115A, 115B) that adsorb moisture in the treated air and desorption units (81, 82, 115A, 115B) that desorb the adsorbed moisture. 82, 115A, 115B), wherein the heat sources (51, 52, 123, 133) are first heat sources (51, 52, 123, 133) that adjust the relative humidity at which the adsorption units (81, 82, 115A, 115B) adsorb moisture; a second heat source (51, 52, 123, 133) for adjusting the relative humidity at which the desorption section (81, 82, 115A, 115B) desorbs moisture, and the control section (95, 140) controls the second The temperature of the second heat source (51, 52, 123, 133) is controlled so that moisture is desorbed from the desorption section (81, 82, 115A, 115B) in the vicinity of one relative humidity value, and the second The temperature of the first heat source (51, 52, 123, 133) is controlled so that the adsorption section (81, 82, 115A, 115B) adsorbs moisture in the vicinity of two relative humidity values.

In the eighth aspect, moisture can be desorbed from the adsorbent of the desorption section (81, 82, 115A, 115B) in the vicinity of the first relative humidity value, and the adsorption section ( 81, 82, 115A, 115B) can adsorb moisture.

In a ninth aspect of the present disclosure, in the eighth aspect, the control unit (95, 140) supplies the first process air from the outside to the room and exhausts the air from the room to the outside when dehumidifying the room. Based on the temperature/humidity data of the second processed air, the relative humidity of the first processed air reaching the adsorption section (81, 82, 115A, 115B) is a value near the second relative humidity value on the adsorption line. while lowering the temperature of the first heat source (51, 52, 123, 133) so that the relative humidity of the second process air reaching the desorption section (81, 82, 115A, 115B) is the first By controlling the temperature of the second heat source (51, 52, 123, 133) so as to have a value in the vicinity of one relative humidity value, the first process air is dehumidified air and supplied into the room, and the second Processed air is converted to high-humidity air and exhausted to the outside.

In the ninth aspect, energy efficiency is improved when dehumidifying the room.

In a tenth aspect of the present disclosure, in the eighth or ninth aspect, the control unit (95, 140) controls the first process air exhausted from the indoors to the outdoors and from the outdoors to the indoors when humidifying the room. Based on the temperature/humidity data of the supplied second treated air, the relative humidity of the second treated air reaching the desorption section (81, 82, 115A, 115B) is equal to the first relative humidity value at the desorption line. while increasing the temperature of the second heat source (51, 52, 123, 133) so as to have a value in the vicinity of the adsorption line By lowering the temperature of the first heat source (51, 52, 123, 133) so as to have a value in the vicinity of the second relative humidity value in, the second processing air is supplied to the room as humidified air, and the first processing The air is converted to low-humidity air and exhausted to the outside.

In the tenth aspect, energy efficiency is improved when humidifying the room.

According to an eleventh aspect of the present disclosure, in any one of the eighth to tenth aspects, the first heat source (51, 52) and the second heat source (51, 52) constitute a heat pump, and The control section (95) interlocks and controls the temperature of the first heat source (51, 52) and the temperature of the second heat source (51, 52).

In the eleventh aspect, energy efficiency can be further improved.

A twelfth aspect of the present disclosure is any one of the eighth to tenth aspects, wherein the first heat source (123, 133) and the second heat source (123, 133) do not constitute a heat pump, and the control unit (140) independently controls the temperature of the first heat source (123, 133) and the temperature of the second heat source (123, 133).

In the twelfth aspect, the configuration of the humidity control device (110) can be simplified.

FIG. 1 is a diagram illustrating adsorption characteristics of an adsorbent used in a humidity control apparatus according to an embodiment. FIG. 2 is a diagram showing the adsorption characteristics of the adsorbent of the comparative example. 3 is a schematic cross-sectional view of a building showing an installation state of the humidity control apparatus according to Embodiment 1. FIG. 4 is a plan view, a right side view, and a left side view showing the schematic structure of the humidity control apparatus according to Embodiment 1. FIG. 5 is a piping system diagram showing the configuration of the refrigerant circuit in the humidity control apparatus according to Embodiment 1, in which (A) shows the refrigerant flow during the first operation, and (B) shows the refrigerant during the second operation. Refrigerant flow is shown. 6 is a block diagram showing the configuration of the control unit of the humidity control apparatus according to Embodiment 1. FIG. 7 is a schematic plan view, right side view, and left side view showing the flow of air during the first operation of the dehumidifying operation in the humidity control apparatus according to Embodiment 1. FIG. 8 is a schematic plan view, right side view, and left side view showing the flow of air during the second dehumidifying operation in the humidity control apparatus according to Embodiment 1. FIG. 9 is a schematic plan view, right side view, and left side view showing the flow of air during the first humidification operation in the humidity control apparatus according to Embodiment 1. FIG. 10 is a schematic plan view, right side view, and left side view showing the flow of air during the second humidification operation in the humidity control apparatus according to Embodiment 1. FIG. 11 is a schematic plan view, right side view, and left side view showing the flow of air during the first operation of the ventilation operation in the humidity control apparatus according to Embodiment 1. FIG. 12 is a schematic plan view, right side view, and left side view showing the flow of air during the second operation of the ventilation operation in the humidity control apparatus according to Embodiment 1. FIG. 13 is a flowchart showing control processing of the humidity control apparatus according to Embodiment 1. FIG. FIG. 14 is a schematic configuration diagram of a humidity control apparatus according to Embodiment 2. FIG. FIG. 15 is a flow diagram showing control processing of the humidity control apparatus according to the second embodiment.

Embodiments of the present disclosure will be described below with reference to the accompanying drawings. The following embodiments are essentially preferable illustrations, and are not intended to limit the scope of the present invention, its applications, or its uses.

(Embodiment 1)
A humidity control apparatus (10) according to Embodiment 1 dehumidifies or humidifies a target space using an adsorbent that adsorbs moisture in the air. A humidity control device (10) controls the temperature of the adsorbent or the relative humidity of the air supplied to the adsorbent in consideration of the adsorption properties of the adsorbent.

<Adsorbent>
The adsorbent used in the humidity control apparatus (10) of this embodiment has a so-called S-shaped adsorption characteristic (adsorption isotherm) as shown in FIG. 1, for example. The adsorption isotherm shown in FIG. 1 includes an adsorption line when water is adsorbed and a desorption line when the adsorbed water is desorbed.

In the adsorption isotherm shown in FIG. 1, less than the first relative humidity value (RH1) is defined as the first range (I), and the first relative humidity value (RH1) or more and the second relative humidity value (RH2) (RH2>RH1) or less is the second range (II), and the value exceeding the second relative humidity value (RH) is the third range (III), the change in the moisture content of the adsorbent with respect to the change in relative humidity in the second range (II) is greater than the change in moisture content of the adsorbent with respect to changes in relative humidity in the first range (I) and the third range (III). In addition, "water content" means the mass (unit: g/g) of water that can be contained in 1 g of the adsorbent.

The humidity control device (10) of the present embodiment is close to the first relative humidity value (RH1), for example, in the range of (RH1-10%) to (RH1), preferably in the range of (RH1-5%) to (RH1). Moisture is desorbed from the adsorbent within a range, more preferably from (RH1-3%) to (RH1).

The humidity control device (10) of the present embodiment is close to the second relative humidity value (RH2), for example, in the range of (RH2) to (RH2+10%), preferably (RH2) to (RH2+5%). Moisture is adsorbed by the adsorbent within the range, more preferably from (RH2) to (RH2+3%).

In the adsorbent used in the humidity control apparatus (10) of the present embodiment, the slope of the adsorption isotherm in the second range (II) is the slope of the adsorption isotherm in the first range (I) and the third range (III). It is preferably 5 times or more.

In the adsorbent used in the humidity control apparatus (10) of the present embodiment, the amount of change ΔW in moisture content in the second range (II) is preferably 50% or more of the maximum moisture content of the adsorbent. Moreover, the amount of change ΔW in the moisture content in the second range (II) is preferably 0.3 g or more.

In the adsorbent used in the humidity control apparatus (10) of the present embodiment, the difference between the second relative humidity value (RH2) and the first relative humidity value (RH1) is preferably 40% or less.

By using an adsorbent having S-shaped adsorption characteristics as described above, the range of relative humidity in which moisture is adsorbed and desorbed (regenerated) from the adsorbent is narrowed. As a result, the temperature change range of the heat source required to achieve the range of relative humidity can be reduced, thereby improving energy efficiency.

On the other hand, for example, when using an adsorbent of a comparative example having a linear adsorption characteristic as shown in FIG. Since the upper limit RH2') is wide, the temperature change width of the required heat source becomes large, resulting in poor energy efficiency.

The adsorbent used in the humidity control apparatus (10) of the present embodiment is not particularly limited as long as it is a material having S-shaped adsorption characteristics as shown in FIG. By configuring the adsorbent with mesoporous silica or the like supporting metal nanoparticles, it becomes easier to achieve desired adsorption properties.

<Configuration of humidity control device>
The humidity control apparatus (10) of this embodiment, as shown in FIG. 3, controls the humidity of the indoor space (200) and also ventilates the indoor space (200). The humidity control device (10) adjusts the humidity of the sucked outdoor air (OA) and supplies it to the indoor space (200), and at the same time discharges the sucked indoor air (RA) to the outdoor space (201).

The humidity control device (10) may be installed in a building together with the air conditioner (150) as shown in FIG. The air conditioner (150) includes an outdoor unit (152) and an indoor unit (151), and selectively performs cooling operation and heating operation. The humidity control device (10) is connected via ducts (102, 103) to an indoor space (200) into which an indoor unit (151) of an air conditioner (150) blows air. Specifically, the humidity control device (10) is connected to an indoor space (200) through an air supply duct (102) and an inside air intake duct (103), and is connected to an exhaust duct (101) and an outside air intake duct (104). It is connected to the outdoor space (201) via.

The humidity control device (10) will be described in detail with reference to FIG. Unless otherwise specified, "top", "bottom", "left", "right", "front", "back", "front", and "back" used in the following explanations refer to the humidity control device (10) viewed from the front side. It means the direction of the case.

The humidity control device (10) has a casing (11). A refrigerant circuit (50), which will be described later, is accommodated in the casing (11). A first adsorption heat exchanger (51), a second adsorption heat exchanger (52), a compressor (53), a four-way switching valve (54), and an electric expansion valve (55) are connected to the refrigerant circuit (50). be done. The refrigerant circuit (50) constitutes a heat pump.

The casing (11) is shaped like a rectangular parallelepiped that is somewhat flattened and has a relatively low height. The casing (11) is formed with an outside air intake port (24), an inside air intake port (23), an air supply port (22), and an exhaust port (21). The outside air intake (24) has an outside air intake duct (104), the inside air intake (23) has an inside air intake duct (103), the air supply opening (22) has an intake air duct (102), and the exhaust opening. An exhaust duct (101) is connected to (21), respectively.

The outside air inlet (24) and the inside air inlet (23) are provided in the back panel (13) of the casing (11). The outside air intake (24) is provided in the lower portion of the back panel (13). The inside air intake port (23) is provided in the upper portion of the back panel portion (13). The air inlet (22) is provided in the first side panel portion (14) of the casing (11). In the first side panel portion (14), the air supply port (22) is arranged near the end of the casing (11) on the front panel portion (12) side. The exhaust port (21) is provided in the second side panel portion (15) of the casing (11). In the second side panel portion (15), the exhaust port (21) is arranged near the end on the front panel portion (12) side.

An upstream partition plate (71), a downstream partition plate (72), and a central partition plate (73) are provided in the internal space of the casing (11). These partition plates (71 to 73) are erected on the bottom plate of the casing (11) and partition the internal space of the casing (11) from the bottom plate to the top plate of the casing (11).

The upstream partition plate (71) and the downstream partition plate (72) are arranged parallel to the front panel section (12) and the rear panel section (13) with a predetermined space in the longitudinal direction of the casing (11). placed. The upstream partition plate (71) is arranged near the rear panel portion (13). The downstream partition plate (72) is arranged near the front panel portion (12). Arrangement of the central partition plate (73) will be described later.

In the casing (11), the space between the upstream partition plate (71) and the rear panel portion (13) is divided into upper and lower spaces, and the upper space constitutes the inside air passageway (32). , the lower space forms an outside air passage (34). The inside air passageway (32) communicates with the interior space (200) via a duct connected to the inside air inlet (23). The outdoor air passageway (34) communicates with the outdoor space (201) via a duct that connects to the outdoor air inlet (24).

An inside air filter (27), an inside air temperature sensor (91), and an inside air humidity sensor (92) are installed in the inside air passage (32). The internal air side filter (27) removes dust and the like from the passing air. The inside air temperature sensor (91) measures the temperature of the room air flowing through the inside air passageway (32). The inside air humidity sensor (92) measures the relative humidity of the room air flowing through the inside air passageway (32).

An outside air filter (28), an outside air temperature sensor (93), and an outside air humidity sensor (94) are installed in the outside air passage (34). The outside air filter (28) removes dust and the like from the passing air. The outdoor air temperature sensor (93) measures the temperature of outdoor air flowing through the outdoor air passageway (34). The outdoor air humidity sensor (94) measures the relative humidity of outdoor air flowing through the outdoor air passageway (34).

The inside air temperature sensor (91), the inside air humidity sensor (92), the outside air temperature sensor (93), and the outside air humidity sensor (94) constitute an acquisition unit that acquires temperature/humidity data of the processing air. 7 to 12, which will be described later, the inside air temperature sensor (91), the inside air humidity sensor (92), the outside air temperature sensor (93), and the outside air humidity sensor (94) are not shown.

The space between the upstream partition plate (71) and the downstream partition plate (72) in the casing (11) is partitioned left and right by the central partition plate (73), and the space on the right side of the central partition plate (73) constitutes the first heat exchanger chamber (37), and the space on the left side of the central partition plate (73) constitutes the second heat exchanger chamber (38). The first heat exchanger chamber (37) accommodates a first adsorption heat exchanger (51) serving as an adsorption/desorption section (adsorption section or desorption section) (81). The second heat exchanger chamber (38) accommodates a second adsorption heat exchanger (52) that serves as an adsorption/desorption section (adsorption section or desorption section) (82). The electric expansion valve (55) (see FIG. 5) of the refrigerant circuit (50) is accommodated in the first heat exchanger chamber (37).

Each of the adsorption/desorption parts (81, 82) may be a so-called cross-fin type fin-and-tube heat exchanger having the adsorbent supported on its surface. Each adsorption/desorption section (81, 82) adsorbs moisture in the treated air and desorbs the adsorbed moisture. Each adsorption heat exchanger (51, 52) functions as a heat source (first heat source or second heat source) that adjusts the relative humidity at which the adsorption and desorption units (81, 82) adsorb and desorb moisture.

Each adsorption heat exchanger (51, 52) may be formed in the shape of a rectangular thick plate or a flat rectangular parallelepiped as a whole. Each adsorption heat exchanger (51, 52) is placed in the heat exchanger chamber (37, 38) with its front and rear faces parallel to the upstream partition plate (71) and the downstream partition plate (72). It may be placed in an upright position.

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

The upstream partition plate (71) is provided with four openable dampers (41) to (44). Each of the dampers (41) to (44) is formed in a substantially oblong rectangular shape. Specifically, the first inside air damper (41) is attached to the right side of the center partition (73) in the portion (upper portion) of the upstream partition (71) facing the inside air passage (32). A second inside air side damper (42) is attached to the left of the center partition (73). A first outside air damper (43) is attached to the right side of the central partition (73) in the portion (lower portion) of the upstream partition (71) facing the outside air passageway (34), A second outside air side damper (44) is attached to the left of the center partition (73). The four dampers (41) to (44) provided in the upstream partition plate (71) constitute a switching mechanism (40) for switching air circulation paths.

The downstream partition plate (72) is provided with four openable dampers (45) to (48). Each of the dampers (45) to (48) is formed in a substantially oblong rectangular shape. Specifically, in the portion (upper portion) of the downstream partition plate (72) facing the air supply side passageway (31), the first air supply side damper (45) is located to the right of the central partition plate (73). is attached, and the second intake side damper (46) is attached to the left of the center partition (73). A first exhaust damper (47) is attached to the right side of the central partition (73) in the portion (lower portion) of the downstream partition (72) facing the exhaust passage (33), A second exhaust side damper (48) is attached to the left of the central partition (73). The four dampers (45) to (48) provided on the downstream partition plate (72) constitute a switching mechanism (40) for switching air circulation paths.

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

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

The air supply fan chamber (36) accommodates the compressor (53) of the refrigerant circuit (50) and the four-way switching valve (54) (see FIG. 5). The compressor (53) and the four-way switching valve (54) are arranged between the supply fan (26) and the partition plate (77) in the supply fan chamber (36).

In addition, the humidity control apparatus (10) of the present embodiment is provided with a ventilation passageway (85) connecting the outside air passageway (34) and the supply fan chamber (36). The ventilation passageway (85) is opened and closed by a first ventilation damper (86) on the side of the outside air intake (24) and a second ventilation damper (87) on the side of the air supply port (22). On the front panel portion (12) side of the casing (11), an electric component box (88) including a control board, a power supply board, etc. on which a controller (control section) (95) described later is mounted is provided. 4 and FIGS. 7 to 12 described later, the ventilation passage (85), the dampers (86) and (87), and the electric component box (88) are shown only in (plan view) for the sake of simplicity. ing.

<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. Although not shown, the refrigerant circuit (50) is equipped with a plurality of temperature sensors and pressure sensors.

In the refrigerant circuit (50), the discharge pipe of the compressor (53) is connected to the first port of the four-way switching valve (54), and the suction pipe of the compressor (53) is connected to the second port of the four-way switching valve (54). connected to a port. The refrigerant circuit (50) includes a first adsorption heat exchanger (51), an electric expansion valve (55), and a second adsorption heat exchanger (51) in this order from the third port to the fourth port of the four-way switching valve (54). A exchanger (52) is arranged.

The four-way switching valve (54) has a first state in which the first port and the third port are in communication and the second port and the fourth port are in communication (the state shown in FIG. 5A), It is configured to be switchable to a second state (state shown in FIG. 12B) in which the first port and the fourth port communicate and the second port and the third port communicate.

The compressor (53) is a fully enclosed compressor in which a compression mechanism and an electric motor for driving the compression mechanism are housed in the same casing. Alternating current is supplied to the electric motor of the compressor (53) through an inverter. When the output frequency of the inverter (that is, the operating frequency of the compressor (53)) is changed, the rotation speed of the electric motor and the compression mechanism driven thereby changes, and the operating capacity of the compressor (53) changes. Increasing the rotation speed of the compression mechanism increases the operating capacity of the compressor (53), and decreasing the rotation speed of the compression mechanism decreases the operating capacity of the compressor (53).

<Controller configuration>
The humidity control device (10) is provided with a controller (control section) (95) shown in FIG. The controller (95) may be configured using, for example, a microcomputer and a memory device that stores software for operating the microcomputer. The measured values of the inside air humidity sensor (92), the inside air temperature sensor (91), the outside air humidity sensor (94), and the outside air temperature sensor (93) are input to the controller (95). The measured values of the temperature sensor and the pressure sensor provided in the refrigerant circuit (50) are input to the controller (95). The controller (95) receives a signal indicating the operating state of the air conditioner (150), for example, a signal indicating whether the air conditioner (150) is in operation, or a signal indicating whether the air conditioner (150) is in cooling operation. A signal indicating whether the heating operation is to be performed is input. The controller (95) controls the operation of the humidity control device (10) based on these input measured values and signals. That is, the controller (95) controls dampers (41) to (48), (86), (87), fans (25), (26), a compressor (53), an electric expansion valve (55), and It controls the operation of the four-way switching valve (54).

Further, as shown in FIG. 6, the controller (95) includes a compressor control section (96) and an operation mode determination section (97). The compressor control section (96) sets the target value of the operating frequency of the compressor (53) based on the measured values of the sensors (91) to (94). The operation mode determination unit (97) determines the operation mode of the humidity control device (10) based on the measurement values of the sensors (91) to (94) and signals indicating the operation state of the air conditioner (150). Decide what you should drive.

Furthermore, the controller (95) controls the temperature of the adsorbent carried on each adsorption/desorption section (81, 82) or the relative humidity of the air supplied to the adsorbent. Specifically, based on the temperature and humidity data acquired by the inside air humidity sensor (92), the inside air temperature sensor (91), the outside air humidity sensor (94), and the outside air temperature sensor (93), the controller (95) controls each By controlling the temperature of the adsorption/desorption units (81, 82), that is, the respective adsorption heat exchangers (51, 52), moisture is desorbed from the adsorbent near the first relative humidity value (RH1), and the second relative humidity value (RH1) is controlled. Moisture is absorbed by the adsorbent near the humidity value (RH2).

When the heat pump is composed of the first adsorption heat exchanger (51) and the second adsorption heat exchanger (52), the controller (95) controls the temperature of the first adsorption heat exchanger (51) and the second adsorption heat. The temperature of the exchanger (52) is interlocked and controlled.

<Driving behavior>
The humidity control apparatus (10) of the present embodiment selectively performs dehumidification operation, humidification operation, cooling operation, heating operation, and ventilation operation. Dehumidification operation and humidification operation are humidity control operations for the purpose of adjusting the absolute humidity of the outdoor air supplied to the indoor space (200). In other words, the dehumidifying operation and the humidifying operation are operations for mainly processing the latent heat load (dehumidifying load or humidifying load) of the indoor space (200). The cooling operation and the heating operation are sensible heat treatment operations for the purpose of adjusting the temperature of the outdoor air supplied to the indoor space (200). In other words, the cooling operation and the heating operation are mainly operations for processing the sensible heat load (cooling load or heating load) of the indoor space (200). The ventilation operation is an operation for performing only ventilation of the indoor space (200).

In each of the dehumidification operation, humidification operation, cooling operation, heating operation, and ventilation operation, the air supply fan (26) and the exhaust fan (25) operate, and the four-way switching valve (54) and each damper (41) to The operations of (48), (86), and (87) are switched at regular time intervals. The humidity control device (10) supplies the sucked outdoor air (OA) to the indoor space (200) as supply air (SA), and the sucked indoor air (RA) to the outdoor space (201) as exhaust air (EA). to the

When the adsorption isotherm of the adsorbent used in the humidity control device (10) includes an adsorption line for adsorbing moisture and a desorption line for desorbing the adsorbed moisture, as shown in FIG. (95) controls the temperature of the adsorption heat exchanger (51, 52) so that moisture is desorbed from the desorption section (81, 82) near the first relative humidity value (RH1) on the desorption line, and , the temperature of the adsorption heat exchangers (51, 52) may be controlled so that the adsorption sections (81, 82) adsorb moisture near the second relative humidity value (RH2) at the adsorption line.

The dehumidification operation, humidification operation, and ventilation operation performed by the humidity control device (10) will be described in detail below.

[Dehumidification operation]
In the humidity control device (10) during dehumidifying operation, outdoor air is drawn into the casing (11) from the outdoor air suction port (24) as first process air, and room air is drawn from the indoor air suction port (23) into the casing (11). inwards as the second process air. In the refrigerant circuit (50), the compressor (53) operates to adjust the opening of the electric expansion valve (55). During the dehumidifying operation, the humidity control apparatus (10) alternately and repeatedly performs a first operation and a second operation, which will be described later, for, for example, three minutes. In other words, in the dehumidification operation, the first predetermined time, which is the duration of the first action and the second action, is set to 3 minutes.

In the first operation of the dehumidifying operation shown in FIG. 7, the second adsorption heat exchanger (52) operates as an evaporator, and the adsorption/desorption section (adsorption section) (82) removes moisture in the first treated air (OA). is adsorbed and dehumidified air is supplied to the room (SA). In addition, the first adsorption heat exchanger (51) operates as a condenser, and the adsorption/desorption section (desorption section) (81) desorbs moisture from the second treated air (RA) so that the high-humidity air is removed from the outdoor air. exhaust (EA) to

In the second action of the dehumidifying operation shown in FIG. 8, the air circulation path is switched by the four-way switching valve (54) and the dampers (41-48), and the first adsorption heat exchanger (51) operates as an evaporator. , an adsorption/desorption unit (desorption unit) (81) absorbs moisture in the first treated air (OA) and supplies dehumidified air (SA) into the room. The second adsorption heat exchanger (52) operates as a condenser, and the adsorption/desorption section (adsorption section) (82) desorbs moisture from the second treated air (RA) to release the high-humidity air to the outdoors. Exhaust (EA).

Specifically, as shown in FIG. 7, in the first operation of the dehumidifying operation, the switching mechanism (40) sets the air circulation path to the second path. Specifically, the first inside air side damper (41), the second outside air side damper (44), the second intake side damper (46), and the first exhaust side damper (47) are opened to open the second inside air side damper (44). The side damper (42), the first outside air side damper (43), the first intake side damper (45), and the second exhaust side damper (48) are closed. During this first operation, the four-way switching valve (54) is set to the first state (the state shown in (A) of FIG. 5). A refrigeration cycle is performed in the refrigerant circuit (50), the first adsorption heat exchanger (51) functions as a condenser (radiator), and the second adsorption heat exchanger (52) functions as an evaporator.

The first process air (OA) flowing into the outside air passageway (34) flows through the second outside air side damper (44) into the second heat exchanger chamber (38) and then into the second adsorption heat exchanger. Go through (52). In the second adsorption heat exchanger (first heat source) (52), that is, the adsorption/desorption section (adsorption section) (82), the moisture in the first treated air is adsorbed by the adsorbent, and the heat of adsorption generated at that time is Heat is absorbed by the refrigerant. Also, in the second adsorption heat exchanger (52), the temperature of the first treated air is somewhat lowered. The first process air dehumidified in the adsorption section (82) flows through the second air supply side damper (46) into the air supply side passageway (31), passes through the air supply fan chamber (36), and then is supplied. It is supplied (SA) to the indoor space (200) through the port (22).

On the other hand, the second process air (RA) that has flowed into the inside air side passageway (32) flows through the first inside air side damper (41) into the first heat exchanger chamber (37), and then flows into the first heat of adsorption. Pass through the exchanger (51). In the first adsorption heat exchanger (second heat source) (51), that is, the adsorption/desorption section (desorption section) (81), water is desorbed from the adsorbent heated by the refrigerant, and the desorbed water is transferred to the second heat source. applied to process air. The second treated air to which moisture has been added in the desorption section (81) flows through the first exhaust side damper (47) into the exhaust side passageway (33), passes through the exhaust fan chamber (35), and then exits the exhaust port. It is discharged (EA) to the outdoor space (201) through (21).

Further, as shown in FIG. 8, in the second action of the dehumidifying operation, the switching mechanism (40) sets the air circulation path to the first path. Specifically, the second inside air side damper (42), the first outside air side damper (43), the first intake side damper (45), and the second exhaust side damper (48) are opened to open the first inside air side damper (43). The damper (41), the second outside air side damper (44), the second intake side damper (46), and the first exhaust side damper (47) are closed. During this second operation, the four-way switching valve (54) is set to the second state (the state shown in (B) of FIG. 5). A refrigeration cycle is performed in the refrigerant circuit (50), the second adsorption heat exchanger (52) functions as a condenser (radiator), and the first adsorption heat exchanger (51) functions as an evaporator.

The first process air (OA) flowing into the outside air passageway (34) flows through the first outside air side damper (43) into the first heat exchanger chamber (37) and then into the first adsorption heat exchanger. Go through (51). In the first adsorption heat exchanger (first heat source) (51), that is, the adsorption/desorption section (adsorption section) (81), the moisture in the first treated air is adsorbed by the adsorbent, and the heat of adsorption generated at that time is Heat is absorbed by the refrigerant. In the first adsorption heat exchanger (51), the temperature of the first treated air is somewhat lowered. The first process air dehumidified in the adsorption section (81) flows through the first air supply side damper (45) into the air supply side passageway (31), and after passing through the air supply fan chamber (36), is supplied air. It is supplied (SA) to the indoor space (200) through the port (22).

On the other hand, the second process air (RA) that has flowed into the inside air side passageway (32) flows through the second inside air side damper (42) into the second heat exchanger chamber (38), and then flows into the second heat of adsorption. Pass through exchanger (52). In the second adsorption heat exchanger (second heat source) (52), that is, the adsorption/desorption section (desorption section) (82), water is desorbed from the adsorbent heated by the refrigerant, and the desorbed water is transferred to the second heat source. applied to process air. The second treated air to which moisture has been added in the desorption section (82) flows through the second exhaust side damper (48) into the exhaust side passageway (33), passes through the exhaust fan chamber (35), and then exits the exhaust port. It is discharged (EA) to the outdoor space (201) through (21).

In the dehumidifying operation described above, the controller (95) controls the temperature and humidity data of the first treated air supplied from the outside to the room and the second treated air discharged from the room to the outside (measurement of each sensor (91-94) value), the adsorption heat exchanger (51 , 52), and the adsorption heat is increased so that the relative humidity of the second treated air reaching the desorption section (81, 82) has a value in the vicinity of the first relative humidity value (RH1) at the desorption line. The temperature of the exchangers (51, 52) may be raised. As a result, while improving energy efficiency, the first process air (OA) is converted into dehumidified air and supplied to the room (SA), and the second process air (RA) is converted into high-humidity air and discharged to the outside (EA). be able to.

[Humidification operation]
In the humidity control device (10) during humidification operation, the outdoor air is sucked into the casing (11) from the outside air suction port (24) as the second treated air, and the room air is drawn from the inside air suction port (23) into the casing (11). sucked in as the first process air. In the refrigerant circuit (50), the compressor (53) operates to adjust the opening of the electric expansion valve (55). During the humidifying operation, the humidity control apparatus (10) alternately and repeatedly performs a first operation and a second operation, which will be described later, for example, every 3 minutes and 30 seconds. In other words, in the humidification operation, the first predetermined time, which is the duration of the first action and the second action, is set to 3 minutes and 30 seconds.

In the first operation of the humidification operation shown in FIG. 9, the first adsorption heat exchanger (51) operates as a condenser, and the adsorption/desorption section (desorption section) (81) adds moisture to the second treated air (OA). is desorbed and humidified air is supplied (SA) into the room. The second adsorption heat exchanger (52) operates as an evaporator, and the adsorption/desorption section (adsorption section) (82) adsorbs moisture in the first treated air (RA) and exhausts the dehumidified air to the outside of the room. (EA) do.

In the second action of the humidification operation shown in FIG. 10, the four-way switching valve (54) and the dampers (41-48) switch the air circulation path, and the second adsorption heat exchanger (52) operates as a condenser. , an adsorption/desorption unit (desorption unit) (82) desorbs moisture from the second processing air (OA) and supplies humidified air (SA) into the room. The first adsorption heat exchanger (51) operates as an evaporator, and the adsorption/desorption section (adsorption section) (81) adsorbs moisture in the first treated air (RA) and exhausts the dehumidified air to the outside of the room. (EA) do.

Specifically, as shown in FIG. 9, in the first humidifying operation, the switching mechanism (40) sets the air circulation path to the first path. Specifically, the second inside air side damper (42), the first outside air side damper (43), the first intake side damper (45), and the second exhaust side damper (48) are opened to open the first inside air side damper (43). The side damper (41), the second outside air side damper (44), the second intake side damper (46), and the first exhaust side damper (47) are closed. In this first action, the four-way switching valve (54) is set to the first state (the state shown in (A) of FIG. 5). A refrigeration cycle is performed in the refrigerant circuit (50), the first adsorption heat exchanger (51) functions as a condenser (radiator), and the second adsorption heat exchanger (52) functions as an evaporator.

The first process air (RA) that has flowed into the inside air side passageway (32) flows through the second inside air side damper (42) into the second heat exchanger chamber (38) and then into the second adsorption heat exchanger. Go through (52). In the second adsorption heat exchanger (52) (first heat source), that is, the adsorption/desorption section (adsorption section) (82), the moisture in the first treated air is adsorbed by the adsorbent, and the heat of adsorption generated at that time is Heat is absorbed by the refrigerant. The first air dehydrated in the adsorption section (82) flows through the second exhaust side damper (48) into the exhaust side passageway (33), passes through the exhaust fan chamber (35), and then exits the exhaust port (21). ) to the outdoor space (201) (EA).

On the other hand, the second process air (OA) that has flowed into the outside air passageway (34) passes through the first outside air side damper (43), flows into the first heat exchanger chamber (37), and then flows into the first heat of adsorption. Pass through the exchanger (51). In the first adsorption heat exchanger (second heat source) (51), that is, the adsorption/desorption section (desorption section) (81), water is desorbed from the adsorbent heated by the refrigerant, and the desorbed water is transferred to the second heat source. applied to process air. The temperature of the second treated air rises somewhat in the first adsorption heat exchanger (51). The second process air humidified in the desorption section (81) flows through the first air supply side damper (45) into the air supply side passageway (31), passes through the air supply fan chamber (36), and is then supplied. It is supplied (SA) to the indoor space (200) through the air port (22).

Further, as shown in FIG. 10, in the second action of the humidifying operation, the switching mechanism (40) sets the air circulation path to the second path. Specifically, the first inside air side damper (41), the second outside air side damper (44), the second intake side damper (46), and the first exhaust side damper (47) are opened to open the second inside air side damper (44). The side damper (42), the first outside air side damper (43), the first intake side damper (45), and the second exhaust side damper (48) are closed. In this second action, the four-way switching valve (54) is set to the second state (the state shown in (B) of FIG. 5). A refrigeration cycle is performed in the refrigerant circuit (50), the second adsorption heat exchanger (52) functions as a condenser (radiator), and the first adsorption heat exchanger (51) functions as an evaporator.

The first process air (RA) that has flowed into the inside air side passage (32) flows through the first inside air side damper (41) into the first heat exchanger chamber (37) and then into the first adsorption heat exchanger. Go through (51). In the first adsorption heat exchanger (first heat source) (51), that is, the adsorption/desorption section (adsorption section) (81), the moisture in the first treated air is adsorbed by the adsorbent, and the heat of adsorption generated at that time is Heat is absorbed by the refrigerant. The first treated air dehydrated in the adsorption section (81) flows through the first exhaust-side damper (47) into the exhaust-side passageway (33), passes through the exhaust fan chamber (35), and then exits the exhaust port ( 21) to the outdoor space (201) (EA).

On the other hand, the second process air (OA) flowing into the outside air passageway (34) passes through the second outside air side damper (44), flows into the second heat exchanger chamber (38), and then flows into the second heat of adsorption chamber (38). Pass through exchanger (52). In the second adsorption heat exchanger (second heat source) (52), that is, the adsorption/desorption section (desorption section) (82), water is desorbed from the adsorbent heated by the refrigerant, and the desorbed water is transferred to the second heat source. applied to process air. The temperature of the second process air rises somewhat in the second adsorption heat exchanger (52). The second process air humidified in the desorption section (82) passes through the second air supply side damper (46), flows into the air supply side passageway (31), passes through the air supply fan chamber (36), and is then supplied. It is supplied (SA) to the indoor space (200) through the air port (22).

In the humidification operation described above, the controller (95) measures the temperature and humidity data (each sensor (91 to 94) value), the adsorption heat exchanger ( 51, 52), the adsorption heat is increased so that the relative humidity of the first treated air reaching the adsorption section (81, 82) has a value in the vicinity of the second relative humidity value (RH2) on the adsorption line. The temperature of the exchanger (51, 52) may be lowered. As a result, while improving energy efficiency, the second process air (OA) is converted into humidified air and supplied to the room (SA), and the first process air (RA) is converted into low-humidity air and discharged to the outside (EA). be able to.

[Ventilation operation]
In the humidity control device (10) during ventilation operation, the outdoor air is sucked into the casing (11) through the outdoor air inlet (24) as the first treated air, and the indoor air is drawn into the casing (11) through the indoor air inlet (23). inwards as the second process air. In the refrigerant circuit (50), the operation of the compressor (53), that is, the refrigeration cycle stops. During the ventilation operation, the humidity control apparatus (10) alternately and repeatedly performs a first operation and a second operation, which will be described later, every three minutes, for example. In other words, in the ventilation operation, the first predetermined time, which is the duration of the first action and the second action, is set to 3 minutes.

In the first operation of the ventilation operation shown in FIG. 11, the first process air (OA) sucked from the outside air intake port (24) into the outside air passageway (34) passes through the ventilation passageway (85) to the air supply fan. The air flows into the room (36), passes through the air supply fan room (36), and is supplied (SA) to the indoor space (200) through the air supply port (22). On the other hand, the second process air (RA) sucked into the inside air side passageway (32) through the inside air suction port (23) passes through the first inside air side damper (41) and flows into the first heat exchanger chamber (37). After that, it flows through the first exhaust-side damper (47) into the exhaust-side passage (33), passes through the exhaust fan chamber (35), and is discharged to the outdoor space (201) through the exhaust port (21) (EA ) is done. That is, in the first action of the ventilation operation, the first inside air side damper (41), the first exhaust side damper (47), the first ventilation damper (86), and the second ventilation damper (87) are opened. , a second inside air side damper (42), a first outside air side damper (43), a second outside air side damper (44), a first intake side damper (45), a second intake side damper (46), and a second 2 The exhaust side damper (48) is closed.

In the second action of the ventilation operation shown in FIG. 12, the first process air (OA) sucked from the outside air suction port (24) into the outside air passageway (34) is passed through the ventilation passageway (85) and then through the air supply fan. The air flows into the room (36), passes through the air supply fan room (36), and is supplied (SA) to the indoor space (200) through the air supply port (22). On the other hand, the second process air (RA) sucked into the inside air side passageway (32) through the inside air suction port (23) passes through the second inside air side damper (42) and flows into the second heat exchanger chamber (38). After that, it flows through the second exhaust side damper (48) into the exhaust side passage (33), passes through the exhaust fan chamber (35), and is discharged to the outdoor space (201) through the exhaust port (21) (EA ) is done. That is, in the second operation of the ventilation operation, the second inside air side damper (42), the second exhaust side damper (48), the first ventilation damper (86), and the second ventilation damper (87) are opened. , a first inside air side damper (41), a first outside air side damper (43), a second outside air side damper (44), a first intake side damper (45), a second intake side damper (46), and a second 1 The exhaust side damper (47) is closed.

<Humidity control>
A process flow of humidity control by the controller (95) of the humidity control apparatus (10) of the present embodiment will be described below with reference to FIG.

First, in step S101, when the humidity control apparatus (10) is started, the controller (95) controls the fans (25), (26) and the dampers (41) to (48), (86), ( 87).

Next, in step S102, the controller (95) controls the temperature and Acquire relative humidity (temperature and humidity data measured by sensors (91-94)).

Next, in step S103, the controller (95) determines the selected operation mode, and according to the operation mode, the dampers (41) to (48), (86), (87) and four-way switching It controls the valve (54).

Specifically, when the "dehumidification operation" is selected, in step S104, the controller (95) controls the adsorption heat exchanger ( 51, 52) and the air (RA) sucked from the inside air suction port (23) passes through the adsorption heat exchangers (51, 52) serving as condensers. , and the four-way switching valve (54) to perform batch switching control between the first operation and the second operation.

When the "humidification operation" is selected, in step S105, the controller (95) controls the adsorption heat exchangers (51, 52), in which the air (OA) sucked from the outside air inlet (24) serves as a condenser. ), and the air (RA) sucked from the internal air suction port (23) passes through the adsorption heat exchangers (51, 52) serving as evaporators (51, 52), dampers (41) to (48), and The switching valve (54) is operated to perform batch switching control between the first action and the second action.

Next, when the operation mode is "dehumidification operation" or "humidification operation", following step S104 or S105, in step S106, the controller (95) controls the temperature and humidity data of the inlet air acquired in step S102. , Based on the pre-stored adsorption characteristics of the adsorbent (adsorption isotherm (adsorption line and desorption line), first relative humidity value (RH1), second relative humidity value (RH2)), adsorption as a condenser A target temperature Tc of the heat exchangers (51, 52) and a target temperature Te of the adsorption heat exchangers (51, 52) serving as evaporators are calculated. The target temperature Tc is set so that moisture is desorbed from the desorption portions (81, 82) near the first relative humidity value (RH1) on the desorption line. The target temperature Te is set so that the adsorption portions (81, 82) adsorb moisture near the second relative humidity value (RH2) on the adsorption line.

In addition, when the adsorption characteristics of the adsorbent have temperature dependence, if the temperature of the adsorbent is changed by controlling the adsorption heat exchanger (heat source) (51, 52), the adsorption isothermal temperature used to calculate the target temperatures Tc and Te The controller (95) may be configured such that the lines (adsorption lines, desorption lines) are updated by calculation formulas, tables, or the like.

Next, when the operation mode is "dehumidification operation" or "humidification operation", following step S106, in step S107, the controller (95) controls the target temperatures Tc and Te calculated in step S106 to , heat pump (HP) operation control is started for the first adsorption heat exchanger (51) and the second adsorption heat exchanger (52).

On the other hand, when it is determined in step S103 that the "ventilation operation" is selected, in step S108 the controller (95) causes the air (OA) sucked from the outside air intake (24) to pass through the ventilation passage (85). Each damper (86), (87) is controlled so as to pass through.

When the operation mode is "ventilation operation", calculation of the target temperatures Tc and Te in step S106 and heat pump operation control in step S107 are not performed.

Next, following step S107 or S108, in step S109, the controller (95) determines whether there is a change in the temperature and humidity of the inlet air, or whether there is an instruction to change the operation mode or to stop the operation of the device. judge.

When it is determined in step S109 that the temperature and humidity of the inlet air have changed, if the operation mode is "dehumidification operation" or "humidification operation", the process returns to step S106, and the controller (95) sets the target temperatures Tc and Te. Recalculate.

When it is determined in step S109 that there is no change in the temperature and humidity of the inlet air, if the operation mode is "dehumidification operation" or "humidification operation", the controller (95) adjusts the target temperatures Tc, Te in step S107. maintain heat pump operation based on

In step S107, it is desirable that both the target temperatures Tc and Te of the condenser and the evaporator are achieved in balance. There is a possibility that the temperature of (51, 52) deviates from the target temperatures Tc and Te and becomes a random temperature. In this case, the controller (95) may control the temperatures of the first adsorption heat exchanger (51) and the second adsorption heat exchanger (52) so that power consumption is minimized.

When it is determined in step S109 that an operation mode change instruction has been issued, the process returns to step S103, and the controller (95) performs control according to the changed operation mode.

When it is determined in step S109 that there is an instruction to stop the operation of the apparatus, in step S110 the controller (95) controls the fans (25), (26), the dampers (41) to (48), The operations of (86) and (87) are stopped, the operation of the heat pump (HP) is stopped, and the operation of the humidity control device (10) is stopped.

<Features of Embodiment 1>
The humidity control apparatus (10) of this embodiment dehumidifies or humidifies a target space using an adsorbent that adsorbs moisture in the air. The humidity control device (10) comprises a controller (95) that controls the temperature of the adsorbent or the relative humidity of the air supplied to the adsorbent. In the adsorption isotherm of the adsorbent used in the humidity control device (10), less than the first relative humidity value (RH1) is defined as the first range (I), and the first relative humidity value (RH1) or more and the second relative humidity value (RH2 ) (RH2 > RH1) or less is defined as the second range (II), and the second range (RH2) is defined as the third range (III). The change in water content is greater than the change in water content of the adsorbent with respect to changes in relative humidity in the first range (I) and the third range (III). The controller (95) operates in the vicinity of the first relative humidity value (RH1), for example, in the range of (RH1-10%) to (RH1), preferably in the range of (RH1-5%) to (RH1), more preferably ( Moisture is desorbed from the adsorbent within the range of RH1-3%) to (RH1). The controller (95) operates near the second relative humidity value (RH2), for example, in the range of (RH2) to (RH2+10%), preferably in the range of (RH2) to (RH2+5%), more preferably ( RH2) to (RH2+3%) to adsorb moisture to the adsorbent.

According to the humidity control apparatus (10) of the present embodiment, the controller (95) controls the temperature of the adsorbent or the relative humidity of the air supplied to the adsorbent in consideration of the adsorption characteristics of the adsorbent. Therefore, the range of temperature change of the heat source (adsorption heat exchangers (51, 52)) for achieving a relative humidity range in which the adsorbent can obtain the required amount of adsorption can be suppressed, thereby improving energy efficiency.

Further, according to the humidity control apparatus (10) of the present embodiment, since an adsorbent having a so-called S-shaped adsorption characteristic is used, a heat source ( Since the temperature change range of the adsorption heat exchangers (51, 52) can be further suppressed, energy efficiency can be further improved.

Further, according to the humidity control apparatus (10) of the present embodiment, the temperature change range when heating or cooling the adsorption heat exchangers (51, 52) supporting the adsorbent, that is, the adsorption/desorption parts (81, 82) is becomes smaller. For this reason, stress fluctuations in the adsorption/desorption parts (81, 82) caused by temperature changes and swelling and shrinkage of the adsorbent can be reduced. The life of the parts (81, 82) can be extended.

Further, according to the humidity control apparatus (10) of the present embodiment, the condenser temperature (target Tc) and the evaporator temperature (target Te) required for dehumidification operation and humidification operation are adjusted according to the adsorption characteristics of the adsorbent. can reduce the difference. Therefore, the number of rotations of the compressor (53) can be reduced compared to the conventional technology, and the energy saving performance of the humidity control device (10) is improved.

In the adsorbent used in the humidity control apparatus (10) of the present embodiment, the slope of the adsorption isotherm in the second range (II) is the slope of the adsorption isotherm in the first range (I) and the third range (III). It may be 5 times or more. In this way, energy efficiency can be further improved.

In the adsorbent used in the humidity control apparatus (10) of the present embodiment, the amount of change ΔW in the moisture content in the second range (II) may be 50% or more of the maximum moisture content of the adsorbent. In this way, energy efficiency can be further improved.

In the adsorbent used in the humidity control apparatus (10) of the present embodiment, the difference between the second relative humidity value (RH2) and the first relative humidity value (RH1) may be 40% or less. In this way, energy efficiency can be further improved.

The adsorbent used in the humidity control device (10) of the present embodiment may be a metal organic framework (MOF). In this way, an adsorbent with desired adsorption properties can be obtained.

In the humidity control apparatus (10) of the present embodiment, an adsorption/desorption section (81, 82) carrying an adsorbent and adsorbing moisture in the treated air and desorbing the adsorbed moisture; an adsorption/desorption section ( 81, 82) absorbs and desorbs moisture, a heat source (adsorption heat exchanger (51, 52)) that controls the relative humidity, a fan (25, 26) that controls the airflow of the process air, and a An acquisition unit (sensors (91 to 94)) for acquiring temperature and humidity data, and the controller (95) controls the adsorption heat exchanger (51, 52) based on the temperature and humidity data acquired by the sensors (91 to 94). temperature may be controlled. By doing so, it is possible to control the temperature of the adsorption heat exchangers (51, 52) to achieve a relative humidity range in which the required amount of adsorption can be obtained in the adsorbent.

In the adsorbent used in the humidity control apparatus (10) of the present embodiment, the adsorption isotherm may include an adsorption line for adsorbing moisture and a desorption line for desorbing the adsorbed moisture. In this case, one of the adsorption/desorption parts (81, 82) is an adsorption part (81, 82) that adsorbs moisture in the treated air, and the other of the adsorption/desorption parts (81, 82) is the adsorbed moisture. and one of the adsorption heat exchangers (51, 52) is a first heat source that adjusts the relative humidity at which the adsorption sections (81, 82) adsorb moisture. Yes, the other of the adsorption heat exchangers (51, 52) may be a second heat source that adjusts the relative humidity at which the desorption units (81, 82) desorb moisture. Further, the controller (95) controls one of the adsorption heat exchangers (51, 52) so that moisture is desorbed from the desorption sections (81, 82) near the first relative humidity value (RH1) on the desorption line. While controlling the temperature, the temperature of the other side of the adsorption heat exchangers (51, 52) is controlled so that the adsorption sections (81, 82) adsorb moisture near the second relative humidity value (RH2) on the adsorption line. may In this way, moisture can be desorbed from the adsorbent of the desorption section (81, 82) near the first relative humidity value (RH1), and the water can be adsorbed near the second relative humidity value (RH2). Moisture can be adsorbed by the adsorbent of the part (81, 82).

When the humidity control apparatus (10) of the present embodiment performs a dehumidification operation, the controller (95) controls temperature and humidity data ( Based on the measured values of each sensor (91 to 94), the relative humidity of the first process air reaching the adsorption part (81, 82) is a value near the second relative humidity value (RH2) on the adsorption line. The temperature of the adsorption heat exchanger (51, 52) serving as the first heat source is lowered so that the relative humidity of the second treated air reaching the desorption section (81, 82) becomes the first relative humidity at the desorption line. The temperature of the adsorption heat exchanger (51, 52), which is the second heat source, may be raised so as to have a value in the vicinity of the value (RH1). In this way, the first process air can be dehumidified air and supplied into the room, and the second process air can be high-humidity air and discharged outdoors while improving energy efficiency.

When the humidity control apparatus (10) of the present embodiment performs the humidification operation, the controller (95) controls the temperature and humidity data ( Based on the measured values of each sensor (91 to 94), the relative humidity of the second treated air reaching the desorption section (81, 82) is a value near the first relative humidity value (RH1) at the desorption line. The temperature of the adsorption heat exchangers (51, 52) serving as the second heat sources is increased so that the relative humidity of the first treated air reaching the adsorption sections (81, 82) becomes the second relative humidity in the adsorption line The temperature of the adsorption heat exchanger (51, 52) as the first heat source may be lowered so as to have a value in the vicinity of the value (RH2). In this way, while improving the energy efficiency, it is possible to supply the second process air as humidified air into the room, and convert the first process air into low-humidity air and exhaust it to the outside of the room.

In the humidity control apparatus (10) of the present embodiment, the first adsorption heat exchanger (51) and the second adsorption heat exchanger (52) constitute a heat pump, and the controller (95) comprises the first adsorption heat exchanger. The temperature of (51) and the temperature of the second adsorption heat exchanger (52) may be controlled in conjunction. By doing so, the energy efficiency of the humidity control device (10) can be further improved.

(Embodiment 2)
The humidity control device (110) according to Embodiment 2 dehumidifies or humidifies the target space using an adsorbent that adsorbs moisture in the air. A humidity control device (110) controls the temperature of the adsorbent or the relative humidity of the air supplied to the adsorbent, taking into account the adsorption properties of the adsorbent.

The adsorbent used in the humidity control apparatus (110) of this embodiment is the same as that of Embodiment 1, and has an S-shaped adsorption characteristic (adsorption isotherm) as shown in FIG. 1, for example.

The humidity control device (110) of the present embodiment is in the vicinity of the first relative humidity value (RH1), for example, in the range of (RH1-10%) to (RH1), preferably in the range of (RH1-5%) to (RH1). Moisture is desorbed from the adsorbent within a range, more preferably from (RH1-3%) to (RH1).

The humidity control device (110) of the present embodiment is close to the second relative humidity value (RH2), for example, in the range of (RH2) to (RH2+10%), preferably (RH2) to (RH2+5%). Moisture is adsorbed by the adsorbent within the range, more preferably from (RH2) to (RH2+3%).

<Configuration of humidity control device>
The humidity control device (110) of the present embodiment controls the humidity of the indoor space and also ventilates the indoor space. The humidity control device (110) adjusts the humidity of the sucked outdoor air (OA) and supplies (SA) it to the indoor space, and at the same time discharges (EA) the sucked indoor air (RA) to the outdoor space. The humidity control device (110) may be installed together with an air conditioner. The humidity control device (110) may be configured integrally with an air conditioner, specifically an outdoor unit.

The humidity control device (110) will be described in detail with reference to FIG.

The humidity control device (110) has a casing (111). The casing (111) is shaped like a rectangular parallelepiped that is somewhat flat and relatively low. The internal space of the casing (111) is partitioned into a first air passageway (113) and a second air passageway (114) by a partition plate (112). The first air passageway (113) and the second air passageway (114) face each other with the partition plate (112) interposed therebetween. An outdoor air intake port (111a) is formed at the outdoor end of the first air passageway (113), and an air supply port (111b) is formed at the indoor end. An inside air intake port (111c) is formed at the indoor end of the second air passage (114), and an exhaust port (111d) is formed at the outdoor end. Although not shown, the outside air intake port (111a) has an outside air intake duct, the air supply port (111b) has an air supply duct, the inside air intake port (111c) has an inside air intake duct, and the exhaust port (111c) has an inside air intake duct. 111d) may be connected to exhaust ducts, respectively.

The humidity control rotor (115) is installed in the humidity control device (110) so as to cross both the first air passage (113) and the second air passage (114). The humidity control rotor (115) is, for example, disc-shaped. The humidity-conditioning rotor (115) is formed, for example, by supporting an adsorbent on the surface of a substrate formed in a honeycomb shape. The humidity control rotor (115) is configured to allow air to pass through in its thickness direction, and to bring the passing air into contact with the adsorbent. Materials such as ceramic paper, glass fiber, cellulose-based organic compounds (for example, paper), metals, and resins can be used as the substrate of the humidity control rotor (115). The humidity control rotor (115) may be shaped like a polygonal plate instead of being shaped like a disc. Instead of forming the base material of the humidity conditioning rotor (115) in a honeycomb shape, it may be formed in a mesh shape or a filter shape.

The humidity control rotor (115) is driven by a motor (not shown) to rotate about its central axis at a predetermined speed and move between the first air passage (113) and the second air passage (114). That is, the portion of the humidity control rotor (115) that contacts the air flowing through the first air passageway (113) moves to the second air passageway (114) as it rotates, and flows through the second air passageway (114). The portion in contact with air moves back to the first air passageway (113) as it rotates. Portions of the humidity control rotor (115) located in the first air passageway (113) and the second air passageway (114) respectively function as adsorption/desorption sections (adsorption sections or desorption sections) (115A, 115B). .

An outside air temperature/humidity sensor (121) and an outside air side filter (122) are installed near the outside air inlet (111a) in the first air passage (113). The outdoor air temperature and humidity sensor (121) measures the temperature and relative humidity of outdoor air (OA) flowing through the first air passageway (113). The outside air filter (122) removes dust and the like from the passing air. Upstream of the humidity control rotor (115) in the first air passage (113), an outside air heat source (first A heat source or secondary heat source) (123) is installed. The outside air heat source (123) may be a heater and/or cooler. An air supply fan (124) is installed downstream of the humidity control rotor (115) in the first air passage (113). When the air supply fan (124) is operated, outdoor air is taken into the first air passageway (113), and the taken outdoor air is supplied (SA) to the room after passing through the humidity control rotor (115). .

An inside air temperature/humidity sensor (131) and an inside air side filter (132) are installed near the inside air inlet (111c) in the second air passage (114). The inside air temperature and humidity sensor (131) measures the temperature and relative humidity of room air (RA) flowing through the second air passageway (114). The inside air filter (132) removes dust and the like from the passing air. Upstream of the humidity control rotor (115) in the second air passage (114), an inside air side heat source (first A heat source or secondary heat source) (133) is installed. The inside air heat source (133) may be a heater and/or cooler. An exhaust fan (134) is installed downstream of the humidity control rotor (115) in the second air passage (114). When the exhaust fan (134) is operated, room air is drawn into the second air passageway (114), and the drawn room air is exhausted (EA) to the outside after passing through the humidity control rotor (115).

Although not shown, the humidity control apparatus (110) is provided with an electric component box including a control board, a power supply board, etc., on which a control section (140) described later is mounted.

<Control part>
The control unit (140) may be configured using, for example, a microcomputer and a memory device that stores software for operating the microcomputer. The controller (140) receives the measured values of the outside air temperature/humidity sensor (121) and the inside air temperature/humidity sensor (131). The control section (140) controls the operation of the humidity control device (110) based on these input measured values. That is, the control section (140) controls the operation of the humidity control rotor (115), the heat sources (123) and (133), and the fans (124) and (134).

The control section (140) controls the temperature of the adsorbent carried on each adsorption/desorption section (115A, 115B) or the relative humidity of the air supplied to the adsorbent. Specifically, the control unit (140) controls the temperatures of the heat sources (123) and (133) based on temperature and humidity data acquired by the outside temperature and humidity sensor (121) and the inside temperature and humidity sensor (131). Then, moisture is desorbed from the adsorbent (desorption part (115A, 115B)) near the first relative humidity value (RH1), and the adsorbent (adsorption part ( 115A, 115B)) absorb moisture.

The control section (140) may independently control the temperature of the outside air heat source (123) and the temperature of the inside air heat source (133).

<Driving behavior>
The humidity control device (110) of the present embodiment selectively performs dehumidifying operation, humidifying operation, and ventilation operation. The dehumidification operation and the humidification operation are humidity control operations for the purpose of adjusting the absolute humidity of the outdoor air supplied indoors. The ventilation operation is an operation for performing indoor ventilation only.

In the dehumidifying operation and humidifying operation, the humidity control rotor (115), heat sources (123) and (133), and fans (124) and (134) operate. In ventilation operation, only the humidity control rotor (115) and the fans (124) and (134) operate. The humidity control device (110) supplies the sucked outdoor air (OA) into the room as supply air (SA) and discharges the sucked indoor air (RA) to the outside as exhaust air (EA).

When the adsorption isotherm of the adsorbent used in the humidity control device (110) includes an adsorption line for adsorbing moisture and a desorption line for desorbing the adsorbed moisture, as shown in FIG. The part (140) controls the temperature of the heat sources (123, 124) so that moisture is desorbed from the desorption parts (115A, 115B) near the first relative humidity value (RH1) on the desorption line, and The temperature of the heat sources (123, 124) may be controlled so that the adsorption units (115A, 115B) adsorb moisture near the second relative humidity value (RH2).

The dehumidification operation, humidification operation, and ventilation operation performed by the humidity control device (110) will be described in detail below.

[Dehumidification operation]
In the humidity control device (110), the air supply fan (124) and the exhaust fan (134) are operated, and the outside air side heat source (123) and the inside air side heat source (133) are energized. Also, the humidity control rotor (115) is driven to rotate at a predetermined number of revolutions by a motor (not shown).

Outdoor air (OA) is taken into the first air passageway (113). The outdoor air taken into the first air passageway (113) is cooled by the outside air side heat source (first heat source) (123), and then moves to the adsorption/desorption section (adsorption section) (115A) of the humidity control rotor (115). to come into contact with the adsorbent. The contact with the cooled outdoor air cools the adsorbent of the adsorption section (115A), and the adsorbent adsorbs moisture contained in the outdoor air. The low-humidity air dehydrated through the adsorption section (115A) is supplied to the room (SA).

The humidity control rotor (115) rotates at a predetermined number of revolutions. Therefore, the adsorbent that has adsorbed moisture from the outdoor air in the adsorption portion (115A), ie, the first air passageway (113), moves to the second air passageway (114) as the humidity control rotor (115) rotates.

Indoor air (RA) is taken into the second air passageway (114). The indoor air taken into the second air passageway (114) is heated by the inside air side heat source (second heat source) (133). The heated indoor air is sent to the adsorption/desorption section (desorption section) (115B) of the humidity control rotor (115) and comes into contact with the adsorbent. The contact with the heated room air heats the adsorbent in the desorption section (115B), and moisture is desorbed from the adsorbent. The moisture desorbed from the adsorbent is exhausted (EA) to the outside together with the room air that has passed through the humidity control rotor (115).

The adsorbent regenerated by desorbing moisture in the desorption section (115B) moves back to the first air passageway (113) as the humidity control rotor (115) rotates. As described above, the adsorbent moves along with the rotation of the humidity control rotor (115), and alternately repeats adsorption of moisture in the adsorption section (115A) and desorption of moisture in the desorption section (115B). .

In the dehumidifying operation described above, the control unit (140) controls the temperature and humidity data of the first treated air supplied from the outside to the room and the second treated air discharged from the room to the outside (the measured values of the sensors (121, 131) ), the outside air side heat source (first heat source) ( 123), and the internal air side heat source (second 2 heat source) (133) temperature may be increased. As a result, while improving energy efficiency, the first process air (OA) is converted into dehumidified air and supplied to the room (SA), and the second process air (RA) is converted into high-humidity air and discharged to the outside (EA). be able to.

[Humidification operation]
In the humidity control device (110), the air supply fan (124) and the exhaust fan (134) are operated, and the outside air side heat source (123) and the inside air side heat source (133) are energized. Also, the humidity control rotor (115) is driven to rotate at a predetermined number of revolutions by a motor (not shown).

Outdoor air (OA) is taken into the first air passageway (113). The outdoor air taken into the first air passageway (113) is heated by the outside air side heat source (second heat source) (123). The heated outdoor air is sent to the adsorption/desorption section (desorption section) (115A) of the humidity control rotor (115) to come into contact with the adsorbent. The contact with the heated room air heats the adsorbent in the desorption section (115A), and moisture is desorbed from the adsorbent. The moisture desorbed from the adsorbent is added to the outdoor air that has passed through the humidity control rotor (115) to generate humidified air, and the humidified air is supplied indoors (SA).

The humidity control rotor (115) rotates at a predetermined number of revolutions. Therefore, the adsorbent from which the moisture is desorbed from the outdoor air in the desorption section (115A), that is, the first air passageway (113) moves to the second air passageway (114) as the humidity control rotor (115) rotates. Moving.

Indoor air (RA) is taken into the second air passageway (114). The indoor air taken into the second air passageway (114) is cooled by the inside air side heat source (first heat source) (133), and then moves to the adsorption/desorption section (adsorption section) (115B) of the humidity control rotor (115). to come into contact with the adsorbent. The contact with the cooled room air cools the adsorbent of the adsorption section (115B), and the adsorbent adsorbs moisture contained in the room air. The room air dehydrated through the adsorption section (115B) is exhausted (EA) to the outside.

The adsorbent that has adsorbed moisture in the adsorption section (115B) moves back to the first air passageway (113) as the humidity control rotor (115) rotates. As described above, the adsorbent moves along with the rotation of the humidity control rotor (115), and alternately repeats adsorption of moisture in the adsorption section (115B) and desorption of moisture in the desorption section (115A). .

In the humidification operation described above, the control unit (140) controls the temperature and humidity data (the measured values of the sensors (121, 131)) of the first treated air discharged from the room to the outside and the second treated air supplied from the outside to the room. ), the outside air side heat source (second heat source) is adjusted so that the relative humidity of the second treated air reaching the desorption section (115A) has a value in the vicinity of the first relative humidity value (RH1) at the desorption line. As the temperature of (123) is raised, the internal air side heat source (second 1 heat source) (133) may be lowered. As a result, while improving energy efficiency, the second process air (OA) is converted into humidified air and supplied to the room (SA), and the first process air (RA) is converted into low-humidity air and discharged to the outside (EA). be able to.

[Ventilation operation]
In the humidity control device (110) during ventilation operation, the air supply fan (124), the exhaust fan (134), and the humidity control rotor (115) are operated, and the outdoor air (OA) flows from the outdoor air inlet (111a) to the Room air (RA) is sucked into the second air passageway (114) through the inside air inlet (111c). The outside air heat source (123) and the inside air heat source (133) are deactivated.

Outdoor air sucked into the first air passageway (113) through the outside air suction port (111a) passes through the humidity control rotor (115) and is supplied (SA) into the room through the air supply port (111b). On the other hand, the indoor air (RA) sucked into the second air passageway (114) through the inside air intake port (111c) passes through the humidity control rotor (115) and is discharged (EA) to the outside through the exhaust port (111d). be.

<Humidity control>
Hereinafter, the processing flow of humidity control by the control unit (140) of the humidity control device (110) of the present embodiment will be described with reference to FIG.

First, in step S201, when the humidity control device (110) is activated, the control section (140) operates the air supply fan (124), the exhaust fan (134), and the humidity control rotor (115).

Next, in step S202, the control unit (140) controls the flow of air (OA, RA: hereinafter collectively referred to as inlet air) sucked from the outside air inlet (111a) and the inside air inlet (111c). Obtain temperature and relative humidity (temperature and humidity data measured by sensors (121, 131)).

Next, in step S203, the control section (140) determines the selected operation mode, and controls the heat sources (123) and (133) according to the operation mode.

Specifically, when "dehumidification operation" or "humidification operation" is selected, in step S204, the control unit (140) controls the temperature/humidity data of the inlet air acquired in step S202 and the previously stored adsorption Based on the adsorption characteristics of the material (adsorption isotherm (adsorption line and desorption line), first relative humidity value (RH1), second relative humidity value (RH2)) Calculate The target temperatures of the heat sources (123) and (133) are such that moisture desorbs from the desorption parts (115A and 115B) near the first relative humidity value (RH1) on the desorption line and the second relative humidity value on the adsorption line The adsorption units (115A, 115B) are set to adsorb moisture near the humidity value (RH2).

When the adsorption characteristics of the adsorbent have temperature dependence, if the temperature of the adsorbent changes due to the control of the heat sources (123) and (133), the adsorption isotherm (adsorption line, desorption curve) used to calculate the target temperature The control unit (140) may be configured so that the line-off) is updated by a calculation formula, a table, or the like.

Next, when the operation mode is "dehumidification operation" or "humidification operation", following step S204, in step S205, the control unit (140) calculates each temperature based on the target temperature calculated in step S204. Start temperature control of heat sources (123) and (133).

In step 205, consideration is given to the case where the relative humidity of the adsorption/desorption parts (115A, 115B) deviates from the target value due to the temperature drop caused by the distance from the heat sources (123), (133) to the humidity control rotor (115). Then, the temperature control of each heat source (123), (133) may be performed by correcting this temperature drop.

If the operation mode is "ventilation operation", the target temperature calculation in step S204 and the heat source control in step S205 are not performed, and the process proceeds to the next step S206.

Next, in step S206, the control section (140) determines whether there is a change in the temperature and humidity of the inlet air, or whether there is an instruction to change the operation mode or to stop the operation of the device.

When it is determined in step S206 that the temperature and humidity of the inlet air have changed, if the operation mode is "dehumidification operation" or "humidification operation", the control unit (140) returns to step S204, and the control unit (140) controls each heat source (123). , recalculate the target temperature in (133).

When it is determined in step S206 that there is no change in the temperature and humidity of the inlet air, if the operation mode is "dehumidification operation" or "humidification operation", the control unit (140) controls each heat source (123) in step S205. , (133) to maintain temperature control.

If it is determined in step S206 that there is an instruction to change the operating mode, the process returns to step S203, and the control section (140) performs control according to the changed operating mode.

If it is determined in step S206 that there is an instruction to stop the operation of the apparatus, in step S207 the control section (140) causes the fans (124), (134) and the humidity control rotor (115) to operate. At the same time, the operation of each heat source (123), (133) is stopped, and the operation of the humidity control device (110) is stopped.

<Characteristics of Embodiment 2>
The humidity control device (110) of the present embodiment dehumidifies or humidifies the target space using an adsorbent that adsorbs moisture in the air. The humidity control device (110) comprises a controller (140) that controls the temperature of the adsorbent or the relative humidity of the air supplied to the adsorbent. In the adsorption isotherm of the adsorbent used in the humidity control device (110), less than the first relative humidity value (RH1) is defined as the first range (I), and the first relative humidity value (RH1) or more and the second relative humidity value (RH2 ) (RH2 > RH1) or less is defined as the second range (II), and the second range (RH2) is defined as the third range (III). The change in water content is greater than the change in water content of the adsorbent with respect to changes in relative humidity in the first range (I) and the third range (III). The control unit (140) controls the operation in the vicinity of the first relative humidity value (RH1), for example, in the range of (RH1-10%) to (RH1), preferably in the range of (RH1-5%) to (RH1), more preferably Moisture is desorbed from the adsorbent within the range of (RH1-3%) to (RH1). The control unit (140) controls the vicinity of the second relative humidity value (RH2), for example, in the range of (RH2) to (RH2+10%), preferably in the range of (RH2) to (RH2+5%), more preferably Let the adsorbent adsorb moisture within the range of (RH2) to (RH2+3%).

According to the humidity control device (110) of the present embodiment, the controller (140) controls the temperature of the adsorbent or the relative humidity of the air supplied to the adsorbent, taking into consideration the adsorption characteristics of the adsorbent. Therefore, the range of temperature change of the heat source (123, 133) for achieving a relative humidity range in which the required amount of adsorption can be obtained in the adsorbent can be suppressed, thereby improving energy efficiency.

Further, according to the humidity control apparatus (110) of the present embodiment, since an adsorbent having a so-called S-shaped adsorption characteristic is used, a heat source ( 123, 133), the temperature change width can be further suppressed, so the energy efficiency can be further improved.

In addition, according to the humidity control apparatus (110) of the present embodiment, the temperature change width during heating or cooling of the humidity control rotor (115) carrying the adsorbent, that is, the adsorption/desorption parts (115A, 115B) becomes small. . For this reason, stress fluctuations in the adsorption/desorption parts (115A, 115B) caused by temperature changes and swelling and shrinkage of the adsorbent can be reduced. The life of the parts (115A, 115B) can be extended.

In the adsorbent used in the humidity control device (110) of the present embodiment, the slope of the adsorption isotherm in the second range (II) is the slope of the adsorption isotherm in the first range (I) and the third range (III). It may be 5 times or more. Thereby, energy efficiency can be further improved.

In the adsorbent used in the humidity control device (110) of the present embodiment, the amount of change ΔW in the moisture content in the second range (II) may be 50% or more of the maximum moisture content of the adsorbent. In this way, energy efficiency can be further improved.

In the adsorbent used in the humidity control device (110) of the present embodiment, the difference between the second relative humidity value (RH2) and the first relative humidity value (RH1) may be 40% or less. In this way, energy efficiency can be further improved.

The adsorbent used in the humidity control device (110) of the present embodiment may be a metal organic framework (MOF). In this way, an adsorbent with desired adsorption properties can be obtained.

In the humidity control apparatus (110) of the present embodiment, an adsorption/desorption section (115A, 115B) carrying an adsorbent and adsorbing moisture in the treated air and desorbing the adsorbed moisture; an adsorption/desorption section ( 115A, 115B) absorbs and desorbs moisture, heat sources (123, 133) that adjust the relative humidity, fans (124, 134) that control the airflow of the processing air, and an acquisition unit (sensor (121, 131)), and the control unit (140) may control the temperature of the heat source (123, 133) based on the temperature and humidity data acquired by the sensor (121, 131). By doing so, it becomes possible to control the temperature of the heat source (123, 133) for realizing a relative humidity range in which the required amount of adsorption is obtained in the adsorbent.

In the adsorbent used in the humidity control device (110) of the present embodiment, the adsorption isotherm may include an adsorption line for adsorbing moisture and a desorption line for desorbing the adsorbed moisture. In this case, one of the adsorption/desorption units (115A, 115B) is an adsorption unit (115A, 115B) that adsorbs moisture in the treated air, and the other of the adsorption/desorption units (115A, 115B) is the adsorbed moisture. One of the heat sources (123, 133) is a first heat source that adjusts the relative humidity at which the adsorption units (115A, 115B) adsorb moisture, and the heat sources (123, 133 ) may be a second heat source for adjusting the relative humidity at which the desorption section (115A, 115B) desorbs moisture. In addition, the control unit (140) controls the temperature of one of the heat sources (123, 133) so that moisture is desorbed from the desorption units (115A, 115B) near the first relative humidity value (RH1) on the desorption line. In addition, the other temperature of the heat sources (123, 133) may be controlled so that the adsorption parts (115A, 115B) adsorb moisture near the second relative humidity value (RH2) on the adsorption line. In this way, moisture can be desorbed from the adsorbent of the desorption section (115A, 115B) near the first relative humidity value (RH1), and the water can be adsorbed near the second relative humidity value (RH2). Moisture can be adsorbed by the adsorbents in the portions (115A, 115B).

When the humidity control device (110) of the present embodiment performs a dehumidification operation, the control unit (140) controls the temperature and humidity data of the first processed air supplied from the outside to the room and the second processed air discharged from the room to the outside. (Based on the measured values of each sensor (121, 131), the outside air is adjusted so that the relative humidity of the first processed air reaching the adsorption unit (115A) has a value near the second relative humidity value (RH2) on the adsorption line. As the temperature of the side heat source (first heat source) (123) is lowered, the relative humidity of the second treated air reaching the desorption section (115B) increases to a value near the first relative humidity value (RH1) at the desorption line. The temperature of the heat source (second heat source) (133) on the side of the inside air may be raised so that the first process air is supplied to the room as dehumidified air while improving the energy efficiency. The treated air can be converted to high-humidity air and exhausted to the outside.

When the humidity control device (110) of the present embodiment performs humidification operation, the control unit (140) controls the temperature and humidity data of the first processed air discharged from the room to the outside and the second processed air supplied from the outside to the room. Based on the (measured values of each sensor (121, 131)), the relative humidity of the second treated air reaching the desorption section (115A) is set to have a value near the first relative humidity value (RH1) at the desorption line. When the temperature of the outside air side heat source (second heat source) (123) is increased, the relative humidity of the first process air reaching the adsorption section (115B) is close to the second relative humidity value (RH2) on the adsorption line. The temperature of the inside air side heat source (first heat source) (133) may be lowered so as to have In this way, while improving the energy efficiency, it is possible to supply the second process air as humidified air into the room, and convert the first process air into low-humidity air and exhaust it to the outside of the room.

In the humidity control apparatus (110) of the present embodiment, the outside air heat source (123) and the inside air heat source (133) do not need to form heat pumps. In addition, the control section (140) may independently control the temperature of the outside air side heat source (123) and the temperature of the inside air side heat source 133). By doing so, the configuration of the humidity control device (110) can be simplified.

(Other embodiments)
In the above embodiment, the humidity control device (10, 110) is configured as a humidity control ventilation unit capable of dehumidification, humidification, and ventilation. etc. are not particularly limited. For example, the humidity control apparatus of the present disclosure may not have ventilation functions. Further, the humidity control apparatus of the present disclosure may be installed indoors either integrally with the air conditioner indoor unit or separately, or may be installed outdoors integrally with the air conditioner outdoor unit or separately.

Further, in the above-described embodiment, a heat pump (heat exchanger) or heater is used as the heat source (51, 52, 123, 133) used in the humidity control device (10, 110), but the type of the heat source (51, 52, 123, 133) is particularly limited. Instead, for example, cold/hot water or waste water may be used as the heat source.

Although the embodiments have been described above, it will be appreciated that various changes in form and detail may be made without departing from the spirit and scope of the claims. Also, the above embodiments may be combined or replaced as appropriate. Furthermore, the descriptions of "first", "second", ... described above are used to distinguish the words and phrases to which these descriptions are given, and the number and order of the words and phrases are also limited. not something to do.

As described above, the present disclosure is useful for humidity control devices.

10 humidity control device 25 exhaust fan (fan)
26 air supply fan (fan)
51 first adsorption heat exchanger (heat source (first heat source or second heat source))
52 Second adsorption heat exchanger (heat source (first heat source or second heat source))
81, 82 adsorption/desorption part (adsorption part or desorption part)
91 Inside air temperature sensor (acquisition unit)
92 inside air humidity sensor (acquisition unit)
93 Outside air temperature sensor (acquisition unit)
94 outside air humidity sensor (acquisition unit)
95 controller (control unit)
110 humidity control device 115 humidity control rotor 115A, 115B adsorption/desorption section (adsorption section or desorption section)
121 outside temperature and humidity sensor (acquisition unit)
123 outside air side heat source (first heat source or second heat source)
124 air supply fan (fan)
131 internal temperature and humidity sensor (acquisition unit)
133 inside air side heat source (first heat source or second heat source)
134 exhaust fan (fan)
140 control unit

Claims (12)

A humidity control device (10, 110) using an adsorbent that adsorbs moisture in the air,
A control unit (95, 140) that controls the temperature of the adsorbent or the relative humidity of the air supplied to the adsorbent,
In the adsorption isotherm of the adsorbent, the first range is less than the first relative humidity value, the second range is the first relative humidity value or more and the second relative humidity value (> the first relative humidity value) or less, and the With a third range above the second relative humidity value, the change in the moisture content of the adsorbent with respect to the change in relative humidity in the second range is the adsorbent with respect to the change in relative humidity in the first range and the third range larger than the change in moisture content of
The control unit (95, 140) desorbs moisture from the adsorbent near the first relative humidity value and causes the adsorbent to adsorb moisture near the second relative humidity value,
Humidity control device. In the humidity control device of claim 1,
The slope of the adsorption isotherm of the adsorbent in the second range is at least five times the slope of the adsorption isotherm of the adsorbent in the first range and the third range.
Humidity control device. In the humidity control device of claim 1,
The amount of change in the moisture content of the adsorbent in the second range is 50% or more of the maximum moisture content of the adsorbent.
Humidity control device. In the humidity control device of claim 1,
the difference between the second relative humidity value and the first relative humidity value is 40% or less;
Humidity control device. In the humidity control device of claim 1,
the vicinity of the first relative humidity value ranges from the first relative humidity value to -10%;
the vicinity of the second relative humidity value ranges from the second relative humidity value to +10%;
Humidity control device. In the humidity control device of claim 1,
The adsorbent is composed of a metal organic framework,
Humidity control device. In the humidity control device according to any one of claims 1 to 6,
an adsorption/desorption unit (81, 82, 115A, 115B) that includes the adsorbent and adsorbs moisture in the treated air and desorbs the adsorbed moisture;
a heat source (51, 52, 123, 133) for adjusting the relative humidity at which the adsorption and desorption units (81, 82, 115A, 115B) adsorb and desorb water;
a fan (25, 26, 124, 134) for controlling the flow of the process air;
An acquisition unit (91, 92, 93, 94, 121, 131) for acquiring temperature and humidity data of the processed air,
The control unit (95, 140) controls the temperature of the heat source (51, 52, 123, 133) based on the temperature and humidity data acquired by the acquisition unit (91, 92, 93, 94, 121, 131).
Humidity control device. In the humidity control device of claim 7,
The adsorption isotherm of the adsorbent includes an adsorption line when adsorbing moisture and a desorption line when desorbing the adsorbed moisture,
The adsorption/desorption units (81, 82, 115A, 115B) include adsorption units (81, 82, 115A, 115B) that adsorb moisture in the treated air and desorption units (81, 82, 115) that desorb the adsorbed moisture. A, 115B) and
The heat sources (51, 52, 123, 133) include a first heat source (51, 52, 123, 133) for adjusting the relative humidity at which the adsorption section (81, 82, 115A, 115B) adsorbs moisture, and the desorption section (81, 82, 115A). , 115B) includes a second heat source (51, 52, 123, 133) that regulates the relative humidity at which moisture is desorbed;
The control section (95, 140) controls the second heat source (51, 52, 123, 133) so that moisture is desorbed from the desorption section (81, 82, 115A, 115B) near the first relative humidity value on the desorption line. ) and control the temperature of the first heat source (51, 52, 123, 133) so that the adsorption section (81, 82, 115A, 115B) adsorbs moisture in the vicinity of the second relative humidity value at the adsorption line. to control the temperature,
Humidity control device. In the humidity control device according to claim 8,
When dehumidifying the room, the control unit (95, 140) controls the adsorption unit ( 81, 82, 115A, 115B), the temperature of the first heat source (51, 52, 123, 133) is adjusted so that the relative humidity of the first process air reaches a value near the second relative humidity value at the adsorption line. The second heat source is lowered so that the relative humidity of the second treated air reaching the desorption section (81, 82, 115A, 115B) has a value near the first relative humidity value at the desorption line. By controlling the temperature of (51, 52, 123, 133) to increase, the first process air is supplied to the room as dehumidified air, and the second process air is converted to high humidity air and exhausted to the outside.
Humidity control device. In the humidity control device according to claim 8,
When humidifying the room, the control unit (95, 140) controls the desorption unit based on the temperature and humidity data of the first processed air discharged from the room to the outside and the second processed air supplied from the outside to the room. The temperature of the second heat source (51, 52, 123, 133) such that the relative humidity of the second process air reaching (81, 82, 115A, 115B) has a value in the vicinity of the first relative humidity value at the desorption line while increasing the first heat source so that the relative humidity of the first process air reaching the adsorption section (81, 82, 115A, 115B) has a value in the vicinity of the second relative humidity value on the adsorption line By lowering the temperature of (51, 52, 123, 133), the second processed air is supplied to the room as humidified air, and the first processed air is changed to low-humidity air and exhausted to the outside.
Humidity control device. In the humidity control device according to claim 8,
The first heat source (51, 52) and the second heat source (51, 52) constitute a heat pump,
The control section (95) interlocks and controls the temperature of the first heat source (51, 52) and the temperature of the second heat source (51, 52).
Humidity control device. In the humidity control device according to claim 8,
The first heat source (123, 133) and the second heat source (123, 133) do not constitute a heat pump,
The control unit (140) independently controls the temperature of the first heat source (123, 133) and the temperature of the second heat source (123, 133).
Humidity control device.

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