JP2022112418A - Humidity control device - Google Patents

Abstract

To provide a humidity control device capable of facilitating suppression of deterioration of components due to release of moisture from humidity control means during stop of an operation.SOLUTION: A humidity control device includes: a casing; an air supply flow passage for supplying air to an air-conditioning target space; an air discharge flow passage for discharging air to outside; heat exchange means that is disposed in the air supply flow passage and the air discharge flow passage and in which air to be supplied to the air-conditioning target space and air to be discharged intersect with each other to exchange heat; air supply side heat exchange means disposed downstream of the heat exchange means in the air supply flow passage; air discharge side heat exchange means disposed downstream of the heat exchange means in the air discharge flow passage; and rotor-shaped humidity control means disposed astride the air supply flow passage and the air discharge flow passage and rotated in a predetermined direction downstream of the air supply side heat exchange means and the air discharge side heat exchange means. In the humidity control device, the humidity control means is disposed so that a rotating axis thereof is located in the vertical direction and is installed at a lower position than the air supply heat exchange means and the air discharge heat exchange means in the casing.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to humidity control devices.

Patent Literature 1 discloses an air conditioner provided with a substantially horizontal humidity conditioner having a rotating shaft extending in the vertical direction. In the air conditioner of Patent Literature 1, the humidity conditioner, the heating means, and the sensible heat exchange means are arranged in order from the height direction so as to overlap each other in a plan view of the air conditioner. In Patent Document 1, the rotation speed of the humidity conditioner is freely changeable, and the heating means can be freely switched between a heating state and a heating stop state, so that humidification and dehumidification can be performed without increasing the size of the apparatus. Is going.

JP-A-2007-24377

The present disclosure provides a humidity control device that can easily suppress deterioration of parts due to moisture release from the humidity control means when operation is stopped.

A humidity control apparatus according to the present disclosure includes a housing, an air supply passage provided inside the housing to introduce air from the outside and supply air to an air-conditioned space, and An exhaust flow path that introduces air from the space and discharges it to the outside, and an air supply flow path and an exhaust flow path that intersect the air supplied to the air-conditioned space and the air discharged from the air-conditioned space. a heat exchange means for exchanging heat with the air supply side, an air supply side heat exchange means arranged downstream of the heat exchange means in the air supply passage, and an exhaust air arranged downstream of the heat exchange means in the exhaust passage Humidity control means in the form of a rotor disposed over the air supply side heat exchange means and the exhaust side heat exchange means and rotating in a predetermined direction on the downstream side of the air supply side heat exchange means and the exhaust side heat exchange means. In the humidity control apparatus comprising and, the humidity control means has a rotating shaft arranged along the vertical direction, and is installed at a lower position in the housing than the air supply side heat exchange means and the exhaust side heat exchange means. .

In the humidity control unit and the humidity control apparatus according to the present disclosure, the humidity control means has a rotating shaft arranged along the vertical direction, and is installed at a lower position in the housing than the air supply side heat exchange means and the exhaust side heat exchange means. be done. As a result, when the operation is stopped, the air heated by the heat exchange means on the supply side and the heat exchange means on the exhaust side can be prevented from moving upward and flowing into the humidity control means, thereby preventing unnecessary discharge of the humidity control means. It can control moisture. Therefore, it is possible to easily suppress the deterioration of the parts due to the release of moisture from the humidity control means when the operation is stopped.

Sectional view of the humidity control device according to Embodiment 1 Bottom view of the humidity control device according to Embodiment 1 1 is a perspective view of a humidity control device according to Embodiment 1. FIG. FIG. 2 is a block diagram showing the control configuration of the humidity control device according to Embodiment 1. FIG. Flowchart showing operation of stop operation of the humidity control apparatus according to Embodiment 1 Cross-sectional view of the humidity control device according to Embodiment 2 Configuration diagram of an air conditioning system according to Embodiment 2 Block diagram showing the control configuration of the air conditioning system according to Embodiment 2 Flowchart showing operation of stop operation of humidity control apparatus according to Embodiment 2

(Knowledge, etc. on which this disclosure is based)
At the time when the inventors came up with the present disclosure, in the humidity control apparatus, a substantially horizontal humidity control body, heating means, and sensible heat exchange means were arranged in order from the height direction. In the humidity control means, when the temperature rises, the adsorbed moisture is easily desorbed from the humidity control means and released. Therefore, if the heating means is arranged at a position lower than the humidity control means, the air blowing means and the like will stop when the operation is stopped, so the residual heat of the heating means and the air heated during operation will move upward. , there is a risk of causing the humidity control means to dehumidify. As a result, the humidity in the housing increases, and the inventors have found a problem that the metal parts inside the housing are easily corroded and the resin parts are easily deteriorated. I have come up with a topic.
Therefore, the present disclosure provides a humidity control apparatus that can easily suppress deterioration of parts due to moisture release from the humidity control means when operation is stopped.

Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters or redundant descriptions of substantially the same configurations may be omitted. This is to avoid the following description from becoming more redundant than necessary and to facilitate understanding by those skilled in the art.
It should be noted that the accompanying drawings and the following description are provided to allow those skilled in the art to fully understand the present disclosure and are not intended to limit the claimed subject matter thereby.

(Embodiment 1)
Embodiment 1 will be described below with reference to FIGS. 1 to 5. FIG.
[1-1. Constitution]
[1-1-1. Configuration of humidity control device]
FIG. 1 is a cross-sectional view of the humidity control device 1 according to Embodiment 1. FIG. FIG. 2 is a bottom view of the humidity control device 1 according to Embodiment 1. FIG. FIG. 3 is a perspective view of the humidity control device 1 according to Embodiment 1. FIG. 1 to 3 schematically show the internal structure of the humidity control device 1. FIG. In the following description, directions such as front and back, left and right, and up and down are used based on the humidity control apparatus 1 shown in FIG.
A humidity control device 1, which is an example of a device using the humidity control unit 11 of the present disclosure, will be described.
The humidity control device 1 is a device that adjusts the humidity of an air-conditioned space.

A humidity control apparatus 1 has a housing 2 . Inside the housing 2, air introduced from the outside and supplied to the air-conditioned space, so-called supply air flow path 3, and air introduced from the air-conditioned space and discharged to the outside, so-called An exhaust passage 4 through which exhaust flows is provided.
An outside air port 3Oa is provided at the upstream end of the air supply passage 3. As shown in FIG. An air supply port 3Sa is provided at the downstream end of the air supply channel 3 .
A return air port 4Ra is provided at the upstream end of the exhaust flow path 4 . An exhaust port 4Ea is provided at the downstream end of the exhaust passage 4 .

An air supply fan (air supply blower) 5 is arranged in the air supply passage 3 . By operating the air supply fan 5, the air flows through the air supply passage 3 and is supplied to the air-conditioned space.
An exhaust fan 6 is arranged in the exhaust flow path 4 . By operating the exhaust fan (exhaust air blowing means) 6, the air flows through the exhaust passage 4 and is discharged from the air-conditioned space.

A heat exchange means 7 is arranged on the air supply channel 3 and the exhaust channel 4 . The heat exchange means 7 is provided with a first flow path 7A and a second flow path 7B, which are independent air flow paths. The first flow path 7A is connected to the air supply flow path 3, and the second flow path 7B is connected to the exhaust flow path 4. As shown in FIG. The heat exchange means 7 of the present embodiment is a total heat exchange means, has heat conductivity and moisture permeability, and the air flowing through the first flow path 7A and the air flowing through the second flow path 7B , sensible heat (temperature) and latent heat (humidity) can be fully heat-exchanged. However, the heat exchange means 7 may be sensible heat exchange means instead of the total heat exchange means, and the air flowing through the first flow path 7A and the air flowing through the second flow path 7B generate sensible heat ( temperature) may be configured to enable heat exchange.

On the downstream side of the heat exchange means 7 in the air supply passage 3, an air supply side heat exchange means 8 is arranged. The air-supply side heat exchange means 8 heats, cools, etc. the air flowing through the air-supply flow path 3 .
On the downstream side of the heat exchange means 7 in the exhaust flow path 4, an exhaust side heat exchange means 9 is arranged. The exhaust-side heat exchange means 9 heats, cools, etc. the air flowing through the exhaust passage 4 .
The air supply side heat exchange means 8 can be switched between heating, cooling, and neither heating nor cooling. Further, the exhaust side heat exchange means 9 can be switched between heating and cooling opposite to the heating and cooling of the supply air side heat exchange means 8 and neither heating nor cooling.

A humidity control unit 11 is arranged downstream of the air supply side heat exchange means 8 and the exhaust side heat exchange means 9 . The humidity control unit 11 has a desiccant rotor (humidity control means) 12 and an electric humidity control motor (humidity control means driving section) 13 for rotating the desiccant rotor 12 . The desiccant rotor 12 is humidity control means that absorbs moisture at low temperatures and releases moisture at high temperatures. The desiccant rotor 12 has a rotary shaft 12A and has a rotor shape that rotates in a predetermined direction around the rotary shaft 12A. That is, the desiccant rotor 12 has a shape of a rotating body around the rotating shaft 12A. The desiccant rotor 12 is formed with a plurality of flow paths through which air flows. The desiccant rotor 12 is arranged across the air supply channel 3 and the exhaust channel 4 .

The desiccant rotor 12 is configured, for example, by coating (holding or adsorbing) a moisture absorbing material such as silica gel, zeolite, or lithium chloride on a base material. When the low-temperature air flows into the desiccant rotor 12, moisture in the air is adsorbed and the air is dehumidified. Further, when high-temperature air flows into the desiccant rotor 12, moisture adsorbed on the desiccant rotor 12 is desorbed into the air, thereby humidifying the air.

The desiccant rotor 12 is rotated in a predetermined direction by being driven by the humidity control motor 13 . A rotor-shaped portion of the desiccant rotor 12 continuously moves between the air supply channel 3 and the exhaust channel 4 . The desiccant rotor 12 dehumidifies the air flowing through one of the air supply channel 3 and the exhaust channel 4 while humidifying the air flowing through the other. The humidity control unit 11 controls the humidity of the air flowing through the air supply channel 3 downstream of the heat exchanging means 7 and the air flowing through the exhaust channel 4 downstream of the heat exchanging means 7 .

[1-1-2. Detailed configuration of humidity control device]
The humidity control apparatus 1 according to Embodiment 1 is installed so that the axial direction of the rotating shaft 12A is the up-down direction (vertical direction). In the present embodiment, one axial end side of the rotating shaft 12A corresponds to the upper side. The other axial end side of the rotating shaft 12A corresponds to the lower side.
The housing 2 is formed in a rectangular parallelepiped shape, and includes an upper plate 2A, a lower plate 2B, a left plate 2C, a right plate 2D, a rear plate 2E, and a front plate 2F (see FIG. 2, etc.). Prepare.

As shown in FIGS. 2 and 3, the left plate 2C is formed with a pair of front and rear openings 2C1 and 2C2. The opening 2C1 and the opening 2C2 are formed in the same hole shape. In the present embodiment, the center of the opening 2C2 on the rear side is located above the center of the opening 2C1 on the front side. The front opening 2C1 forms an air supply port 3Sa. Further, the opening 2C2 on the rear side forms a return air port 4Ra.
In the present embodiment, an air supply fan 5 is arranged corresponding to the air supply port 3Sa. The air supply fan 5 is arranged downstream of the heat exchange means 7 .

A pair of front and rear openings 2D1 and 2D2 are formed in the right plate 2D. The opening 2D1 and the opening 2D2 are formed in the same hole shape. The openings 2D1 and 2D2 of the right plate 2D and the openings 2C1 and 2C2 of the left plate 2C are formed in the same hole shape. In the present embodiment, the center of the opening 2D2 on the rear side is located above the center of the opening 2D1 on the front side. The opening 2D1 on the front side forms an exhaust port 4Ea. Further, the opening 2D2 on the rear side forms an outside air port 3Oa.
In this embodiment, an exhaust fan 6 is arranged corresponding to the exhaust port 4Ea. The exhaust fan 6 is arranged downstream of the heat exchange means 7 .

A plate-like first partition member 21 extending in the left-right direction is arranged inside the housing 2 . The first partition member 21 is formed symmetrically. The first partition member 21 is arranged in the center in the vertical direction. The first partition member 21 extends rearward from the front plate 2F, bends and extends appropriately downward on the rear plate 2E side, and is disposed so as to divide the interior of the housing 2 to provide a return air port 4Ra and outside air. It is attached between the port 3Oa and the air supply port 3Sa and the exhaust port 4Ea.
The first partition member 21 creates an upper space in which the return air port 4Ra and the outside air port 3Oa are arranged, and a lower space in which the air supply port 3Sa and the exhaust port 4Ea are arranged. is formed.

An elongated opening 21A extending in the front-rear direction is formed in the central portion of the first partition member 21 in the left-right direction.
Below the opening 21A, a plate-shaped second partition member 22 is arranged that extends from the bottom plate 2B toward the upper opening 21A. The second partition member 22 extends from the front plate 2F to the rear plate 2E. The second partition member 22 is arranged so as to divide the lower space formed by the first partition member 21. Inside the housing 2, there are a space on the side of the air supply port 3Sa and a space on the side of the air discharge port 4Ea. is formed.

A plate-like third partition member 23 (see FIG. 3) is arranged above the rear portion of the first partition member 21 and extends from the upper surface plate 2A toward the opening 21A below. The third partition member 23 extends from the rear plate 2E to the rear end of the heat exchange means 7. As shown in FIG. The third partition member 23 is arranged so as to divide the upper space formed by the first partition member 21, and inside the housing 2, there is a space on the side of the return air port 4Ra and a space on the side of the external air port 3Oa. space is formed.

In the opening 21A of the first partition member 21, the heat exchange means 7 extending in a quadrangular prism shape (substantially column shape) is arranged. The heat exchange means 7 is sandwiched between the second partition member 22 and the top plate 2A of the housing 2 . The heat exchange means 7 is provided at a position overlapping with the extension line L of the rotating shaft 12A, and is arranged to extend in the front-rear direction as an example of the direction intersecting the extension line L. As shown in FIG. That is, in the present embodiment, the extending direction of the heat exchanging means 7 corresponds to the front-rear direction. In addition, below, the extension line L of 12 A of rotating shafts is also called the rotating shaft L. FIG.

The heat exchange means 7 of the present embodiment is a so-called orthogonal heat exchange means 7, in which the first flow path 7A and the second flow path 7B are orthogonal. The heat exchange means 7 is composed of, for example, a porous base material containing a hydrophilic resin or a flame-retardant agent, and rectangular plate-like base materials having linear flow paths are alternately laminated while changing their orientation. Thus, the quadrangular prism-shaped heat exchange means 7 in which the first flow path 7A and the second flow path 7B are orthogonal to each other is formed.

The heat exchanging means 7 is arranged such that the partition members 21 and 22 and the top plate 2A are positioned at the four corners of the quadrangular prism shape. That is, the heat exchange means 7 is arranged such that the diagonal lines of the quadrangular prism shape are on extension lines of the partition members 21 and 22 . Thus, the heat exchange means 7 is arranged such that the first flow path 7A extends from the upper right to the lower left, and the second flow path 7B extends from the upper left to the lower right.

The first flow path 7A is connected to the space on the side of the outside air port 3Oa by an air supply inflow surface 7A1 on the upper right surface, and is connected to the space on the side of the air supply port 3Sa by an air supply outflow surface 7A2 provided on the lower left surface. The second flow path 7B is connected to the space on the side of the return air port 4Ra by an exhaust inflow surface 7B1 provided on the upper left surface, and is connected to the space on the side of the exhaust port 4Ea by an exhaust outflow surface 7B2 provided on the lower right surface. be.
The air supply outflow surface 7A2 and the exhaust outflow surface 7B2 are inclined with respect to the horizontal plane at a predetermined inclination angle, and are inclined so as to approach each other as they go downward.
The four spaces formed by the housing 2 and the partition members 21 to 23 and the flow paths 7A and 7B of the heat exchange means 7 form the air supply flow path 3 and the exhaust flow path 4 inside the housing 2. It is formed.

Below the heat exchange means 7, an air supply side heat exchange means 8 and an exhaust side heat exchange means 9 are arranged. In the present embodiment, except that the air supply side heat exchange means 8 is arranged in the air supply passage 3 and the exhaust side heat exchange means 9 is arranged in the exhaust passage 4, the air supply side heat exchange means 8 and the exhaust air The side heat exchange means 9 is configured similarly.

The heat exchange means 8 and 9 are so-called fin-and-tube heat exchangers, and have pipes (not shown) through which a refrigerant flows and heat-absorbing/heat-releasing parts (not shown) that perform heat-absorbing/heat-releasing with air. The heat exchange means 8 and 9 are connected in series and connected to a refrigerant circuit outside the housing 2 . Refrigerant flows through the heat exchange means 8 and 9 through the refrigerant circuit. In the heat exchanging means 8 and 9, heat is exchanged between the air passing through the inside thereof and the refrigerant, and the air is heated and cooled.

The heat exchange means 8 and 9 are formed in a columnar shape having a rectangular cross section. That is, the heat exchange means 8 and 9 are formed in the shape of plates extending in the front-rear direction. The heat exchange means 8 and 9 are provided with linear air flow paths (not shown) extending in the thickness direction. The heat exchanging means 8 and 9 are provided with inflow surfaces 8A and 9A for inflowing air into the internal flow path and outflow surfaces 8B and 9B for flowing out the air from the internal flow path on the long side surfaces. The inflow surfaces 8A, 9A and the outflow surfaces 8B, 9B are provided substantially parallel to each other, and the flow path length of the air in the heat exchange means 8, 9 is configured to be constant regardless of the inflow position. In the description of the present embodiment, the term "substantially" may be used to mean that some differences such as processing errors and assembly errors are allowed. In other words, "substantially parallel" basically means parallel, and is used in the sense of including parallel even when not parallel due to processing error, assembly error, or the like.

The air-supply side heat exchange means 8 is arranged so that the inflow surface 8A faces the air supply outflow surface 7A2 of the heat exchange means 7 and is substantially parallel thereto. Further, the exhaust-side heat exchange means 9 is arranged such that the inflow surface 9A faces the exhaust outflow surface 7B2 of the heat exchange means 7 and is substantially parallel thereto. By arranging them substantially in parallel, the distance from the air flowing out of the heat exchanging means 7 to the air flowing into the heat exchanging means 8, 9 in each of the flow paths 3, 4 is easily equalized.

Here, the air supply outflow surface 7A2 and the exhaust outflow surface 7B2 of the heat exchanging means 7 are inclined with respect to the horizontal plane, and are inclined so as to approach each other as they move downward. Therefore, the air supply side heat exchange means 8 and the exhaust side heat exchange means 9 which are substantially parallel to them are also inclined with respect to the horizontal plane, and are inclined so as to approach each other as they move downward. The lower end of the air supply side heat exchange means 8 and the lower end of the exhaust side heat exchange means 9 are close to each other.

A drain pan 24 extending in the front-rear direction is arranged below the lower end of the air supply side heat exchange means 8 and the lower end of the exhaust side heat exchange means 9 . The drain pan 24 receives condensed water generated by the heat exchange means 8 and 9 . In the present embodiment, the heat exchange means 8 and 9 are arranged such that the positions at which the condensed water drops from the heat exchange means 8 and 9 are likely to concentrate in the central portion in the left-right direction. Even if the drain pan 24 is shared by a plurality of heat exchange means 8 and 9, the drain pan 24 can be made compact in the horizontal direction. The drain pan 24 can be arranged so as not to narrow the flow paths 3 and 4 .

A humidity control unit 11 is arranged below the heat exchange means 8 and 9 . A humidity control motor 13 of the humidity control unit 11 is supported by the bottom plate 2B of the housing 2 . A drive shaft 13A of the humidity control motor 13 extends vertically. A desiccant rotor 12 is supported on the upper end of the drive shaft 13A. The desiccant rotor 12 is installed below (lower position) than the heat exchange means 8 and 9 in the housing 2 . Since the heat exchange means 8 and 9 which can be heating means are installed above (at a higher position than) the desiccant rotor 12, the air warmed by the heat of the heat exchange means 8 and 9 naturally reaches the desiccant rotor 12. It has become difficult to move to When the humidity control apparatus 1 is stopped and the heating functions of the fans 5 and 6 and the heat exchange means 8 and 9 are stopped, the air heated to a high temperature due to the residual heat of the heat exchange means 8 and 9 is transferred to the desiccant rotor 12. It's getting harder to get in. Even if moisture (humidity) remains in the desiccant rotor 12, it is difficult for the desiccant rotor 12 to release moisture after the operation is stopped. Therefore, corrosion of sheet metal parts inside the housing 2 and deterioration of resin parts can be prevented.

The desiccant rotor 12 has an air inlet surface 12B on its upper surface (one side surface in the axial direction of the rotation axis L) and an air outlet surface 12C on its lower surface (the other side surface in the axial direction of the rotation axis L). The desiccant rotor 12 is arranged close to the bottom plate 2B.

A pair of left and right air supply guide plates 25 and an exhaust guide plate 26 are provided on the inlet surface 12B side of the desiccant rotor 12 . The air supply guide plate 25 and the exhaust guide plate 26 guide the air flowing out from the flow paths 7A and 7B of the heat exchanging means 7 to the inlet surface 12B of the desiccant rotor 12 .

As shown in FIG. 2, in the present embodiment, a plurality of humidity control units 11 are provided in the front-rear direction (horizontal direction) and arranged in parallel in the front-rear direction. Since a plurality of desiccant rotors 12 are arranged in the humidity control device 1, the humidity control device 1 can have a high humidity control capability. Moreover, since the desiccant rotors 12 are arranged horizontally, the desiccant rotors 12 are less likely to be affected by each other's moisture release.
The humidity control unit 11 is arranged across the second partition member 22. The second partition member 22 has appropriate openings and notches so that each member of the humidity control unit 11 can be arranged. formed.

An inlet temperature sensor 28 is arranged upstream of the heat exchanging means 7 in the air supply passage 3 . The inlet temperature sensor 28 detects the temperature of the air flowing into the supply air inflow surface 7A1 of the heat exchanging means 7. As shown in FIG.
A return air temperature sensor 29 is arranged upstream of the heat exchange means 7 in the exhaust flow path 4 . The return air temperature sensor 29 detects the temperature of the air flowing in from the return air port 4Ra, that is, the temperature of the return air.

[1-1-3. Control configuration of air conditioning system]
FIG. 4 is a block diagram showing the control configuration of the humidity control device 1 according to Embodiment 1. As shown in FIG.
The humidity control device 1 includes a humidity control control section 50 and a humidity control communication section 60 .

The humidity control unit 50 includes a humidity control processor 51, which is a processor that executes programs such as a CPU (Central Processing Unit) and an MPU (Micro-Processing Unit), and a ROM (Read Only Memory) and a RAM (Random Access Memory). etc., and controls each part of the humidity control apparatus 1 . The humidity control unit 50 performs various processes through the cooperation of hardware and software such that the humidity control processor 51 reads out the control program stored in the humidity control storage unit 52 and executes processing.

The humidity control storage unit 52 has a storage area for storing programs executed by the humidity control processor 51 and data processed by the humidity control processor 51 . The humidity control storage unit 52 stores a control program executed by the humidity control processor 51, setting data relating to various settings of the humidity control apparatus 1, and other various data. The humidity control storage unit 52 has a nonvolatile storage area that stores programs and data in a nonvolatile manner. In addition, the humidity control storage unit 52 may include a volatile storage area and configure a work area for temporarily storing programs to be executed by the humidity control processor 51 and data to be processed.

The humidity control communication unit 60 is configured by communication hardware complying with a predetermined communication standard, and can communicate with an external device under the control of the humidity control control unit 50 .

The humidity control unit 50 is electrically connected to the humidity control operation unit 70, the air supply fan 5, the exhaust fan 6, the humidity control motor 13, the inlet temperature sensor 28, the return air temperature sensor 29, and the like.

The humidity control operation unit 70 includes input means such as operation switches and a touch panel, detects user's operation on the input means, and outputs the operation signal to the humidity control control unit 50 . The humidity control operation unit 70 of Embodiment 1 is provided with input means for operating the humidity control apparatus 1 such as cooling/dehumidifying operation, heating/humidifying operation, and ventilation operation. The ventilation operation in this embodiment is an operation in which the fans 5 and 6 and the humidity control motor 13 are operated while the heat exchange means 8 and 9 are stopped. Based on the input from the humidity control operation unit 70, the humidity control unit 50 executes processing corresponding to the operation on the input means.

The humidity control unit 50 instructs at least the air supply fan 5, the exhaust fan 6, and the humidity control motor 13 to start or stop. The humidity control unit 50 starts and stops the operation of the humidity control device 1 based on the operation signal from the humidity control operation unit 70 . The humidity control unit 50 controls the air supply fan 5 , the exhaust fan 6 and the humidity control motor 13 based on detection signals from the inlet temperature sensor 28 and the return air temperature sensor 29 .

When the operation of the humidity control device 1 is to be stopped, the humidity control unit 50 of the present embodiment provides the exhaust-side heat exchange means 9 with a heating function (heats the exhaust-side heat exchange means 9). A first drying mode is executed in which the fan 6 and the humidity control motor 13 are operated for a first predetermined time.

[1-2. motion]
The operation and function of the humidity control apparatus 1 configured as described above will be described below.
[1-2-1. Operation of humidity control device]
In the humidity control apparatus 1, when the air supply fan 5 and the exhaust fan 6 are operated, air (supply air) flows through the air supply channel 3 as indicated by arrow 3A, and flows through the exhaust channel 4 as indicated by arrow 4A. Air (exhaust) flows into Further, in the humidity control apparatus 1, when the humidity control motor 13 operates, the desiccant rotor 12 rotates about the rotation shaft 12A.

The air introduced into the flow paths 3 and 4 in the housing 2 flows into the heat exchange means 7, exchanges total heat with each other, and flows out. is cooled, heated, etc. The cooled or heated air flows into the desiccant rotor 12 below the heat exchange means 7 and 8 . The desiccant rotor 12 dehumidifies low-temperature air and humidifies high-temperature air. The air humidified by the desiccant rotor 12 is supplied and exhausted to the space to be air-conditioned or to the outside (outside).

In the humidity control apparatus 1 of the present embodiment, the desiccant rotor 12 is arranged below (lower position) than the heat exchange means 8 and 9. Compared to the case where the rotor is arranged, it is less likely to be affected by the air heated by the heat exchange means 8 and 9, and it is easier to suppress unnecessary moisture release from the desiccant rotor 12 when the operation is stopped. . Therefore, the sheet metal parts inside the housing 2 are less likely to corrode, and the resin parts are less likely to deteriorate.

[1-2-2. Operation of stop operation of humidity control device]
FIG. 5 is a flow chart showing the stopped operation of the humidity control apparatus 1 according to the first embodiment.
When the humidity control device 1 starts normal operation, the humidity control unit 50 determines whether or not to end the normal operation of the humidity control device 1 (step ST11). In the present embodiment, normal operation of the humidity control apparatus 1 means operation in which both the air supply fan 5 and the exhaust fan 6 are operated, and means cooling/dehumidifying operation, heating/humidifying operation, or ventilation operation. Whether or not to end the normal operation can be determined based on the input from the humidity control operation section 70 of the humidity control device 1 .

If the humidity control unit 50 does not end the normal operation (step ST11; NO), the step ST11 is repeated.
When ending the normal operation (step ST11; YES), the humidity control unit 50 acquires the inlet temperature based on the inlet temperature sensor 28, and acquires the return air temperature based on the return air temperature sensor 29 (step ST12). ).

After obtaining the inlet temperature and the return air temperature, the humidity control unit 50 determines whether the inlet temperature is higher than the return air temperature (step ST13).

When determining that the inlet temperature is higher than the return air temperature (step ST13; YES), the humidity control unit 50 starts the first drying mode (step ST14). The first drying mode is an operation mode for releasing moisture from the desiccant rotor 12 into the air in the exhaust passage 4 and discharging the air to the outside. That is, in the first drying mode, the humidity control unit 50 turns on the exhaust fan 6 and operates it. In addition, the humidity control unit 50 causes the exhaust-side heat exchange means 9 to have a heating function (heating ON). Furthermore, the humidity control unit 50 turns on the humidity control motor 13 to operate it. Also, the humidity control unit 50 turns off the air supply fan 5 to stop it.

In general, when the normal operation of the humidity control apparatus 1 is to be ended, if the inlet temperature is higher than the return air temperature, the operation is in summer. In summer, the humidity of outside air tends to be high. In the first drying mode, since the exhaust fan 6 is ON, return air is taken into the housing 2 from the air-conditioned space, and the air flows through the exhaust flow path 4 . At this time, since the exhaust-side heat exchange means 9 has a heating function, the air in the exhaust flow path 4 is heated, and when passing through the desiccant rotor 12, the moisture is desorbed from the desiccant rotor 12 and can be exhausted to the outside of the room. In addition, since the air supply fan 5 is OFF, outside air with high humidity is not taken into the housing 2, and the desiccant rotor 12 is in a state in which the supply source of humidity is cut off, making it easy to dry.

The humidity control unit 50 activates a timer (not shown) that measures the first predetermined time (step ST15). The first predetermined time is set in advance based on the moisture release characteristics of the desiccant rotor 12 through experiments or the like.

The humidity control unit 50 determines whether or not the first predetermined time has elapsed after starting the first drying mode (step ST16).

When determining that the first predetermined time has not elapsed (step ST16; NO), the humidity control section 50 repeats step ST16.

When the humidity control unit 50 determines that the first predetermined time has passed (step ST16; YES), it ends the first drying mode (step ST17). That is, the humidity control unit 50 turns off the exhaust fan 6 to stop it. Also, the humidity control unit 50 turns off the operation of the exhaust-side heat exchange means 9 to stop heating. Furthermore, the humidity control unit 50 turns off the humidity control motor 13 to stop it.
Then, the humidity control unit 50 ends the stop operation of the humidity control device 1 .

When determining that the inlet temperature is not higher than the return air temperature (step ST13; NO), the humidity control unit 50 determines whether the inlet temperature is higher than a predetermined temperature indicating winter (step ST21). . The predetermined temperature is set, for example, based on the average winter temperature.

When determining that the inlet temperature is higher than the predetermined temperature (step ST21; YES), the humidity control section 50 starts the second drying mode (step ST22). The second drying mode is an operation mode for dehumidifying the air in the air supply passage 3 from the moisture in the desiccant rotor 12 and supplying the air to the air-conditioned space. That is, in the second drying mode, the humidity control unit 50 turns on the air supply fan 5 and operates it. In addition, the humidity control unit 50 causes the air supply side heat exchange means 8 to have a heating function (heating ON). Furthermore, the humidity control unit 50 turns on the humidity control motor 13 to operate it. Also, the humidity control unit 50 turns off the exhaust fan 6 to stop it.

In general, when the normal operation of the humidity control apparatus 1 is to be terminated, if the inlet temperature is lower than the return air temperature and higher than a predetermined temperature, the operation is in the middle of spring and autumn. And in the middle season, the humidity of the outside air tends to be lower than in summer. In the second drying mode, since the air supply fan 5 is ON, low-humidity outside air is taken into the housing 2 from the outside, and the air flows through the air supply passage 3 . At this time, since the air supply side heat exchange means 8 has a heating function, the air in the air supply flow path 3 is heated, and when passing through the desiccant rotor 12, the moisture is desorbed from the desiccant rotor 12 and the inside of the housing 2 is heated. can be supplied to Also, the exhaust fan 6 is stopped, and the desiccant rotor 12 is in a state in which the supply source of humidity is cut off, making it easy to dry.

The humidity control unit 50 operates a timer (not shown) that measures the second predetermined time. The second predetermined time is set in advance based on the moisture release characteristics of the desiccant rotor 12 through experiments or the like. The second predetermined time is set shorter than the first predetermined time.

The humidity control unit 50 determines whether or not the second predetermined time has elapsed after starting the second drying mode (step ST24). In the intermediate season, the humidity of the outside air tends to be lower than in summer, and the amount of moisture adsorbed by the desiccant rotor 12 tends to decrease during normal operation. Therefore, by making the second predetermined time shorter than the first predetermined time, it is possible to suppress the execution time of the second drying mode for drying the desiccant rotor 12 from becoming excessively long.

When determining that the second predetermined time has not passed (step ST24; NO), the humidity control unit 50 repeats step ST24.

When determining that the second predetermined time has passed (step ST24; YES), the humidity control section 50 terminates the second drying mode (step ST25). That is, the humidity control unit 50 turns off the air supply fan 5 to stop it. In addition, the humidity control unit 50 turns off the operation of the air supply side heat exchange means 8 to stop heating. Furthermore, the humidity control unit 50 turns off the humidity control motor 13 to stop it.
Then, the humidity control unit 50 ends the stop operation of the humidity control device 1 .

When the humidity control unit 50 determines that the inlet temperature is not higher than the predetermined temperature (step ST21; NO), the humidity control unit 50 turns OFF each device in the humidity control device 1 (step ST31), and ends the stop operation. In general, if the inlet temperature is not greater than a predetermined temperature, it is wintertime operation. In winter, the outside air tends to be dry and the humidity tends to be low. Therefore, when the normal operation is resumed, there is a possibility that the humidity of the air taken in from the outside and flowing through the air supply passage 3 may not be sufficient. Therefore, in this embodiment, when the temperature is lower than the predetermined temperature, each device is stopped without executing the drying mode for drying the desiccant rotor 12 . As a result, the desiccant rotor 12 is deliberately made to have moisture (humidity), so that the air in the air supply passage 3 can be easily humidified quickly when the humidity control apparatus 1 is normally operated next time.

[1-3. effects, etc.]
As described above, in the present embodiment, the humidity control apparatus 1 includes a housing 2 and an air supply passage 3 provided inside the housing 2 to introduce air from the outside and supply the air to the air-conditioned space. and an exhaust passage 4 provided inside the housing 2 for introducing air from the air-conditioned space and discharging the air to the outside. In addition, the humidity control device 1 is provided in the air supply flow path 3 and the exhaust flow path 4, and heat exchange means 7 for intersecting and exchanging heat between the air supplied to the air-conditioned space and the air discharged from the air-conditioned space. , the air supply side heat exchange means 8 disposed downstream of the heat exchange means 7 in the air supply flow path 3, and the exhaust side heat exchange means 8 disposed downstream of the heat exchange means 7 in the exhaust flow path 4 exchange means 9; Further, the humidity control device 1 is disposed across the air supply flow path 3 and the exhaust flow path 4, and downstream of the supply air heat exchange means 8 and the exhaust heat exchange means 9, a rotor rotating in a predetermined direction. A shaped desiccant rotor 12 is provided. In this humidity control apparatus 1, the desiccant rotor 12 has a rotating shaft 12A arranged along the vertical direction, and is installed at a position lower than the air supply side heat exchange means 8 and the exhaust side heat exchange means 9 in the housing 2. be done.
As a result, the air supply side heat exchange means 8 and the exhaust side heat exchange means 9, which can serve as heating means, are installed at a position higher than the desiccant rotor 12, so that when the humidity control apparatus 1 is stopped, the desiccant rotor 12 is kept moist. Even if moisture remains, the heat of the air from the heat exchange means 8 and 9 can be suppressed from releasing moisture. Therefore, corrosion of sheet metal parts inside the housing 2 and deterioration of resin parts due to humidity can be suppressed.

As in the present embodiment, the humidity control apparatus 1 is such that the air supply side heat exchange means 8 can be switched between heating, cooling, and neither heating nor cooling, and the exhaust side heat exchange means 9 may be switchable to heat, cool, or neither heat or cool the supply side heat exchange means 8 .
As a result, the air in the air supply channel 3 and the air in the exhaust channel 4 is selectively heated, cooled, and neither heated nor cooled, and the air at a desired temperature is flowed into the desiccant rotor 12. can be made

As in the present embodiment, the humidity control apparatus 1 may have a plurality of desiccant rotors 12 installed in the horizontal direction.
Accordingly, since a plurality of desiccant rotors 12 are arranged, the humidity control apparatus can have a high humidity control capability. Moreover, since the desiccant rotors 12 are arranged horizontally, the desiccant rotors 12 are less likely to be affected by each other's moisture release.

As in the present embodiment, the humidity control apparatus 1 is configured such that the heat exchange means 7 includes a supply air outflow surface 7A2 through which the air supplied to the air-conditioned space flows out from the heat exchange means 7, and an air discharge surface 7A2 through which the air supplied to the air-conditioned space flows out. is provided with an exhaust outflow surface 7B2 that flows out from the heat exchange means 7, the supply air outflow surface 7A2 and the exhaust outflow surface 7B2 are provided at a predetermined inclination angle with respect to the horizontal plane, and the supply air side heat exchange means 8 The inflow surface 8A and the outflow surface 8B on the long side are installed so as to be substantially parallel to the air supply outflow surface 7A2, and the inflow surface 9A and the outflow surface 9B on the long side of the exhaust side heat exchanging means are arranged so as to be the exhaust outflow surface. It may be installed so as to be substantially parallel to 7B2.
As a result, in the flow paths 3 and 4, the distances from the outflow surfaces 7A2 and 7B2 of the heat exchanging means 7 to the inflow surfaces 8A and 9A of the heat exchanging means 8 and 9 become substantially uniform. Since the length of the inner flow path is substantially uniform, the air flowing into the desiccant rotor 12 can be made uniform compared to arrangements other than those described above. In addition, since the air supply side heat exchange means 8 and the exhaust side heat exchange means 9 are inclined with respect to the horizontal plane, the dew condensation water generated from the heat exchange means 8 and 9 is reliably drained from the heat exchange means 8 and 9. be able to.

As in the present embodiment, the humidity control device 1 is arranged in the air supply passage 3 to supply air to the air-conditioned space, and the air supply fan 5 is arranged in the exhaust passage 4 to remove air from the air-conditioned space. An exhaust fan 6 for discharging air, a humidity control motor 13 for rotationally driving the desiccant rotor 12, and a humidity control unit 50 for instructing at least the supply fan 5, the exhaust fan 6, and the humidity control motor 13 to operate or stop. You may prepare. When the operation is stopped, the humidity control unit 50 heats the exhaust side heat exchange means 9 and executes the first drying mode in which the exhaust fan 6 and the humidity control motor 13 are operated for a first predetermined time. may
As a result, even in the summer when the ambient temperature of the humidity control apparatus 1 rises, it is possible to easily prevent the moisture remaining in the desiccant rotor 12 from being released into the housing after the operation is stopped. Therefore, it is possible to prevent corrosion of sheet metal parts inside the housing and deterioration of resin parts.

(Embodiment 2)
Embodiment 2 will be described below with reference to FIGS. 6 to 9. FIG.

[2-1. Constitution]
[2-1-1. Configuration of humidity control device]
FIG. 6 is a cross-sectional view of humidity control device 201 according to the second embodiment. FIG. 6 corresponds to FIG. 1 of the first embodiment.
In the humidity control apparatus 201 according to the second embodiment, the auxiliary heating means 10 is arranged between the exhaust side heat exchanging means 9 and the desiccant rotor 12 in the exhaust passage 4 .

The auxiliary heating means 10 auxiliary heats the air heated by the exhaust side heat exchange means 9 when the exhaust side heat exchange means 9 heats the air in the exhaust passage 4 . The auxiliary heating means 10 is, for example, an electric heater. The auxiliary heating means 10 has a plate-like appearance extending in the front-rear direction. The auxiliary heating means 10 has a linear air flow path (not shown) extending in the thickness direction. The auxiliary heating means 10 is provided with an inflow surface 10A for inflowing air into the internal flow path and an outflow surface 10B for outflowing the air from the internal flow path on the surface on the long side. The inflow surface 10A and the outflow surface 10B are provided substantially parallel. The auxiliary heating means 10 has an inflow surface 10A facing and substantially parallel to an outflow surface 9B of the exhaust side heat exchange means 9, and in the exhaust flow path 4, the air flowing out from the exhaust side heat exchange means 9 is auxiliary heated. The distance until it flows into the means 10 is easily made uniform.

[2-1-2. Configuration of air conditioning system]
FIG. 7 is a configuration diagram of the air conditioning system 100 according to Embodiment 2. As shown in FIG.
An air conditioning system 100, which is an example of a device using the humidity control device 201 of the present disclosure, will be described. The air conditioning system 100 has an air conditioning device 110 and a humidity control device 201 .

The air conditioner 110 includes an outdoor unit 120 and an indoor unit 130 .
The outdoor unit 120 includes a compressor 121 , a four-way valve 122 , an outdoor heat exchanger 123 , an outdoor expansion valve 124 , a gas-liquid separator 125 and an outdoor fan 126 .
The indoor unit 130 includes an indoor expansion valve 131 , an indoor heat exchanger 132 and an indoor blower fan 133 .

Devices 121 to 125 of the outdoor unit 120 and devices 131 to 132 of the indoor unit 130 are connected by suitable refrigerant pipes 140 . A refrigerant circuit 111 of the air conditioner 110 is configured by the devices 121 to 125 of the outdoor unit 120 , the devices 131 to 132 of the indoor unit 130 , and the refrigerant pipe 140 .

The refrigerant pipe 140 includes a refrigerant pipe 141 that connects the outdoor expansion valve 124 side of the outdoor heat exchanger 123 and the indoor expansion valve 131 side of the indoor heat exchanger 132 . The refrigerant pipe 140 also includes a refrigerant pipe 142 that connects between the four-way valve 122 and the indoor heat exchanger 132 . In this embodiment, a plurality of indoor units 130 are provided, and each indoor unit 130 is connected in parallel between refrigerant pipes 141 and 142 .

Humidity control device 201 is connected in parallel with indoor unit 130 between refrigerant pipes 141 and 142 . The air supply side heat exchange means 8 is connected to the refrigerant pipe 142 . The exhaust side heat exchange means 9 is connected to the refrigerant pipe 141 . A connecting pipe 241 is provided between the air supply side heat exchange means 8 and the exhaust side heat exchange means 9 to connect them. A dry valve (expansion means) 242 is arranged in the connecting pipe 241 . A bypass pipe (bypass circuit) 243 is connected between the dry valve 242 and the air supply side heat exchange means 8 . The bypass pipe 243 extends from the connection pipe 241 and is connected to the refrigerant pipe 141 side of the exhaust-side heat exchange means 9 . A check valve 244 is provided in the bypass pipe 243 . The check valve 244 allows the refrigerant to flow from the connection pipe 241 to the refrigerant pipe 141 side, and blocks the refrigerant flow from the refrigerant pipe 141 to the connection pipe 241 . Refrigerant cutoff valves 245 and 246 are provided at both ends of the refrigerant pipe of the humidity control device 201 connected to the refrigerant pipes 141 and 142 .

In the humidity control apparatus 201 of the present embodiment, a refrigerant is used as a heat medium for the air supply side heat exchange means 8 and the exhaust side heat exchange means 9, and further, the air supply side heat exchange means 8 and the exhaust side heat exchange means 9 are annularly connected by a refrigerant circuit 111 . Therefore, the heat exchange means 8 and 9 can be made more compact than when water is used as the heat medium. Therefore, the humidity control device 201 can be made more compact and lightweight, and the workability of the humidity control device 201 can be improved.

[2-1-4. Control configuration of air conditioning system]
FIG. 8 is a block diagram showing the control configuration of the air conditioning system 100 according to Embodiment 2. As shown in FIG.
The air conditioner 110 includes an air conditioning control section 150 and an air conditioning communication section 160 .

The air-conditioning control unit 150 includes an air-conditioning processor 151 such as a CPU or MPU that executes programs, and an air-conditioning storage unit 152 such as a ROM or a RAM, and controls each part of the air conditioner 110 . The air-conditioning control unit 150 executes various processes through cooperation of hardware and software such that the air-conditioning processor 151 reads out the control program stored in the air-conditioning storage unit 152 and executes processing.

The air-conditioning storage unit 152 has a storage area for storing programs executed by the air-conditioning processor 151 and data processed by the air-conditioning processor 151 . The air conditioning storage unit 152 stores a control program executed by the air conditioning processor 151, setting data relating to various settings of the air conditioner 110, and various other data. The air conditioning storage unit 152 has a nonvolatile storage area that stores programs and data in a nonvolatile manner. In addition, the air conditioning storage unit 152 may include a volatile storage area and configure a work area for temporarily storing programs to be executed by the air conditioning processor 151 and data to be processed.

The air-conditioning communication unit 160 is configured by communication hardware complying with a predetermined communication standard, and can communicate with an external device under the control of the air-conditioning control unit 150 . In the present embodiment, the air conditioning communication unit 160 communicates with the humidity control communication unit 260 of the humidity control device 201 under the control of the humidity control air conditioning control unit 150 .

An air conditioning operation unit 170 and an air conditioning display unit 171 are electrically connected to the air conditioning control unit 150 .
The air-conditioning operation unit 170 includes input means such as operation switches and a touch panel, detects user's operations on the input means, and outputs detection results to the air-conditioning control unit 150 .

The air-conditioning display unit 171 includes an LED (Light Emitting Diode), a display panel, and the like. According to the control of the air-conditioning control unit 150, the LED is lit/blinking/extinguished in a predetermined manner, and the display of operation information on the display panel, etc. to run.

A discharge pressure sensor 180 , a suction pressure sensor 181 , a discharge temperature sensor 182 , a suction temperature sensor 183 and an outside air temperature sensor 184 are electrically connected to the air conditioning control unit 150 . Detected values of sensors 180 to 184 are input to air conditioning control unit 150 .
The discharge pressure sensor 180 is provided between the compressor 121 and the outdoor heat exchanger 123 on the discharge side of the compressor 121 and detects the pressure of the refrigerant discharged by the compressor 121 .
The suction pressure sensor 181 is provided between the compressor 121 and the gas-liquid separator 125 on the suction side of the compressor 121 and detects the pressure of the refrigerant flowing into the compressor 121 .

Discharge temperature sensor 182 is provided between compressor 121 and outdoor heat exchanger 123 on the discharge side of compressor 121 and detects the temperature of the refrigerant discharged from compressor 121 .
The suction temperature sensor 183 is provided between the compressor 121 and the gas-liquid separator 125 on the suction side of the compressor 121 and detects the temperature of the refrigerant flowing into the compressor 121 .
An outside air temperature sensor 184 is provided on the wall surface of the outdoor unit 120 and detects the outside air temperature.

The compressor 121 , the four-way valve 122 , the outdoor expansion valve 124 , the outdoor fan 126 , the indoor fan 133 , and the indoor expansion valve 131 are electrically connected to the air conditioning controller 150 .
The air conditioning control unit 150 operates the compressor 121 and the four-way valve 122 based on the operation signal of the air conditioning operation unit 170 and the control signal received from the humidity control device 201 .

Further, during air conditioning operation, the air conditioning control unit 150 controls the compressor 121, the four-way valve 122, the outdoor expansion valve 124, the outdoor blower fan 126, the indoor blower fan 133, the indoor expansion valve 131 based on the detection values of the sensors 180 to 184. drive control.

The air conditioning control unit 150 transmits operation information of the air conditioner 110 , for example, operation information such as heating operation and cooling operation (dehumidification operation) to the humidity control unit 50 via the air conditioning communication unit 160 .

Next, the control configuration of the humidity control device 201 will be described.
The humidity control device 201 includes a humidity control control section 250 and a humidity control communication section 260 . Humidity control unit 250 and humidity control communication unit 260 differ from humidity control control unit 50 and humidity control communication unit 60 of Embodiment 1 in the following points.

The humidity control communication unit 260 communicates with the air conditioning communication unit 160 of the air conditioner 110 under the control of the humidity control control unit 250 .

The humidity control unit 250 includes a humidity control operation unit 70, an air supply fan 5, an exhaust fan 6, a humidity control motor 13, an auxiliary heating means 10, a dry valve 242, refrigerant cutoff valves 245 and 246, an inlet temperature sensor 28, A return air temperature sensor 29 and the like are electrically connected.

The humidity control unit 250 executes and stops operation based on operation signals from the humidity control operation unit 70 and the operation unit 270 of the air conditioner 110, and detects detection signals from the inlet temperature sensor 28 and the return air temperature sensor 29. Based on this, the air supply fan 5, the exhaust fan 6, the dry valve 242, the refrigerant cutoff valves 245 and 246, the humidity control motor 13, and the auxiliary heating means 10 are controlled.

When the air supply side heat exchange means 8 is provided with a cooling function and the exhaust side heat exchange means 9 is provided with a heating function (reverse function of cooling), the humidity control section 250 allows the refrigerant to flow through the refrigerant circuit 111 in the cooling direction C1. (See FIG. 7). When the refrigerant is not circulating in the cooling direction C1, the humidity control unit 250 sends an operation control signal for circulating the refrigerant in the cooling direction C1 to the air conditioner 110 . The humidity control unit 250 opens the refrigerant cutoff valves 245 and 246 when the refrigerant circulates in the cooling direction C1.

When the air supply side heat exchange means 8 is provided with a heating function and the exhaust side heat exchange means 9 is deactivated (neither heating nor cooling), the humidity control unit 250 determines whether the air conditioner 110 is in heating operation. , that is, whether the refrigerant is circulating in the heating direction C2 in the refrigerant circuit 111 or not. When the refrigerant is not circulating in the heating direction C2, the humidity control unit 250 sends an operation control signal for circulating the refrigerant in the heating direction C2 to the air conditioner 110 . The humidity control unit 250 opens the refrigerant cutoff valves 245 and 246 and closes the dry valve 242 when the refrigerant circulates in the heating direction C2.

The humidity control unit 250 closes the refrigerant cutoff valves 245 and 246 when the heat exchange means 8 and 9 are to stop functioning (neither heating nor cooling).

When the normal operation is stopped, the humidity control unit 250 selects a first drying mode in which the exhaust side heat exchange means 9 has a heating function and the exhaust fan 6 and the humidity control motor 13 are operated for a first predetermined time. Run.

[2-2. motion]
The operation and effects of the air conditioning device 110 and the humidity control device 201 of the air conditioning system 100 configured as described above will be described below.
[2-2-1. Operation of air conditioner]
In the air conditioner 110, when performing cooling operation (dehumidifying operation), the four-way valve 122 is operated to switch to a refrigerant circuit in which the refrigerant circulates in the cooling direction C1, and the compressor 121 and the like are operated. In the cooling operation, the refrigerant is sucked into the compressor 121 in a low-temperature, low-pressure gas phase state, and is compressed by the compressor 121 into a high-temperature, high-pressure gas phase state. The high-temperature, high-pressure vapor-phase refrigerant flows through the four-way valve 122 to the outdoor heat exchanger 123, where it radiates heat to the outside air and becomes medium-temperature, medium-pressure liquid phase. The medium-temperature medium-pressure liquid-phase refrigerant flows to the indoor unit 130 via the refrigerant pipe 141 . In the indoor unit 130, the medium-temperature and medium-pressure liquid-phase refrigerant is discharged after the flow rate is adjusted by the indoor expansion valve 131, and in the indoor heat exchanger 132, it absorbs heat from the air in the air-conditioned space, evaporates, and becomes a low-temperature, low-pressure air. Return to phase state. The low-temperature, low-pressure vapor phase refrigerant flows through the refrigerant pipe 142 to the compressor 121 of the outdoor unit 120 and is again compressed by the compressor 121 into a high-temperature, high-pressure vapor phase state.

In the air conditioner 110, when performing heating operation, the four-way valve 122 is operated to switch to a refrigerant circuit in which the refrigerant circulates in the heating direction C2, and the compressor 121 and the like are operated. In the case of heating operation, the refrigerant is sucked into the compressor 121 in a low-temperature, low-pressure gas phase state, and is compressed by the compressor 121 into a high-temperature, high-pressure gas phase state. The high-temperature, high-pressure vapor-phase refrigerant flows to the indoor unit 130 through the refrigerant pipe 142 by the four-way valve 122 . In the indoor unit 130, the high-temperature, high-pressure vapor-phase refrigerant radiates heat to the air in the air-conditioned space by the indoor heat exchanger 132, and becomes medium-temperature, medium-pressure liquid phase. The medium-temperature medium-pressure liquid-phase refrigerant flows to the outdoor unit 120 through the refrigerant pipe 141 . In the outdoor unit 120, medium-temperature and medium-pressure liquid-phase refrigerant is discharged with the flow rate adjusted by the outdoor expansion valve 124, and evaporates by radiating heat to the outside air in the outdoor heat exchanger 123, to a low-temperature and low-pressure gas phase state. return. The low-temperature, low-pressure vapor phase refrigerant flows to the compressor 121 and is again compressed by the compressor 121 into a high-temperature, high-pressure vapor phase state.

[2-2-2. Operation of humidity control device]
Humidity control apparatus 201 of the present embodiment is connected to refrigerant pipes 141 and 142 in parallel with indoor unit 130 . Refrigerant in the same state as the indoor heat exchanger 132 easily flows into and out of the heat exchange means 8 and 9 of the humidity control device 201 .

In the humidity control device 201, when the refrigerant is flowing in the cooling direction C1 in the refrigerant circuit 111 (when the air conditioning device 110 performs cooling operation (dehumidifying operation)), when the refrigerant cutoff valves 245 and 246 are opened, the refrigerant Medium-temperature and medium-pressure liquid-phase refrigerant flows from the pipe 141 into the exhaust-side heat exchanging means 9 , and heats the air in the exhaust passage 4 by radiating heat in the exhaust-side heat exchanging means 9 . The refrigerant flowing through the connecting pipe 241 is discharged after the flow rate is adjusted by the dry valve 242 and flows into the air supply side heat exchange means 8 . The refrigerant absorbs heat from the surrounding air in the air-supply side heat exchange means 8 and evaporates, becomes a low-temperature, low-pressure vapor phase, and flows out to the refrigerant pipe 142 .

The humidity control device 201 operates the fans 5 and 6 and the humidity control motor 13 to perform a cooling and dehumidifying operation in a state in which the refrigerant flows through the refrigerant circuit 111 in the cooling direction C1. That is, in the air supply passage 3, the air is cooled by the air supply side heat exchange means 8, dehumidified by the desiccant rotor 12, and supplied to the space to be air-conditioned. On the other hand, in the exhaust passage 4, the air is heated by the exhaust-side heat exchange means 9 and the auxiliary heating means 10, humidified by the desiccant rotor 12, and exhausted to the outside of the room. In the present embodiment, medium-temperature medium-pressure refrigerant flows into the exhaust-side heat exchange means 9. Therefore, by providing the auxiliary heating means 10, the air in the exhaust flow path 4 flowing into the desiccant rotor 12 can be easily heated to a high temperature. , the desiccant rotor 12 is easily dehumidified appropriately.

Further, in the humidity control apparatus 201, when the refrigerant is flowing in the heating direction C2 in the refrigerant circuit 111 (when the air conditioner 110 performs the heating operation), when the refrigerant cutoff valves 245 and 246 are opened, the refrigerant piping A high-temperature, high-pressure vapor-phase refrigerant flows from 142 into the air supply side heat exchange means 8 , and heats the air in the air supply passage 3 by radiating heat in the air supply side heat exchange means 8 . After flowing out of the air supply side heat exchange means 8 , the refrigerant flows into the connection pipe 241 , is blocked by the dry valve 242 , and flows through the bypass pipe 243 . As a result, the refrigerant flows out to the refrigerant pipe 141 without passing through the exhaust-side heat exchange means 9 .

The humidity control device 201 performs the heating and humidification operation by operating the fans 5 and 6 and the humidity control motor 13 in a state in which the refrigerant flows through the refrigerant circuit 111 in the heating direction C2. That is, in the air supply passage 3, the air is heated by the air supply side heat exchange means 8, humidified by the desiccant rotor 12, and supplied to the air-conditioned space. On the other hand, in the exhaust passage 4, the exhaust-side heat exchange means 9 and the auxiliary heating means 10 are out of function, and the air flows into the desiccant rotor 12 without exchanging heat with the refrigerant. The air is dehumidified and then exhausted. In the present embodiment, medium-temperature medium-pressure refrigerant flows into the exhaust-side heat exchanging means 9, so the exhaust-side heat exchanging means 9 also tends to have a heating function. Therefore, by providing the dry valve 242 and the bypass pipe 243, the air supply side heat exchange means 8 and the exhaust side heat exchange means 9 are connected in series, and the heating function is provided to the air supply side heat exchange means 8. The function of the exhaust side heat exchanging means 9 can be stopped while maintaining the

In the humidity control apparatus 201, when the refrigerant cutoff valves 245 and 246 are closed, the refrigerant does not flow through the heat exchange means 8 and 9, and the heat exchange means 8 and 9 stop functioning. The humidity control apparatus 1 operates the fans 5 and 6 and the humidity control motor 13 to perform the ventilation operation while the heat exchange means 8 and 9 are stopped. That is, the air introduced into the flow paths 3 and 4 flows into the heat exchanging means 7, exchanges total heat with each other, and flows out. The desiccant rotor 12 adjusts the humidity according to the temperature of the air, and supplies and exhausts the air to the outside of the housing 2 .

[2-2-3. Operation of stop operation of humidity control device]
FIG. 9 is a flow chart showing the stopped operation of the humidity control apparatus 201 according to the second embodiment.

When determining that the inlet temperature is higher than the return air temperature (step ST13; YES), the humidity control section 250 starts the first drying mode (step ST214). In the first drying mode of the second embodiment, the humidity control unit 250 differs from step ST14 of the first embodiment in that a process of turning on the auxiliary heating means 10 to provide a heating function is added.

When the humidity control section 250 determines that the first predetermined time has elapsed (step ST23; NO), it ends the first drying mode (step ST217). In step ST23, the humidity control unit 250 is different from step ST14 of the first embodiment in that a process of turning off the auxiliary heating means 10 to stop functioning is added.

[2-3. effects, etc.]
As described above, in the present embodiment, the humidity control apparatus 201 has the desiccant rotor 12 with the rotating shaft 12A arranged along the vertical direction. is also installed at a low position within the housing 2 . Therefore, since the air supply side heat exchange means 8 and the exhaust side heat exchange means 8 which can be heating means are installed above the desiccant rotor 12, moisture remains in the desiccant rotor 12 when the humidity control device 201 is stopped. Even if it is closed, it is difficult for the heat from the air from the heat exchange means 8 and 9 to dissipate moisture. Therefore, corrosion of sheet metal parts inside the housing 2 and deterioration of resin parts can be prevented.

As in the present embodiment, the humidity control device 201 is arranged in the air supply passage 3 to supply air to the air-conditioned space, and the air supply fan 5 is arranged in the exhaust passage 4 to remove air from the air-conditioned space. An exhaust fan 6 for discharging air, a humidity control motor 13 for rotationally driving the desiccant rotor 12, and a humidity control unit 250 for instructing at least the supply fan 5, the exhaust fan 6, and the humidity control motor 13 to operate or stop. You may prepare. When the operation is stopped, the humidity control unit 250 heats the exhaust side heat exchange means 9 and executes the first drying mode in which the exhaust fan 6 and the humidity control motor 13 are operated for the first predetermined time. good too.
As a result, even in the summer when the ambient temperature of the humidity control device 201 rises, it is possible to easily prevent the moisture remaining in the desiccant rotor 12 from being discharged into the housing 2 after the operation is stopped. Therefore, corrosion of sheet metal parts inside the housing 2 and deterioration of resin parts can be prevented.

(Other embodiments)
As described above, Embodiments 1 and 2 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments with modifications, replacements, additions, omissions, and the like. Also, it is possible to combine the constituent elements described in the first and second embodiments to form a new embodiment.
Therefore, other embodiments will be exemplified below.

The humidity control devices 1 and 201 of Embodiments 1 and 2 have been described as being connected to a refrigerant circuit outside the humidity control devices 1 and 201. A built-in configuration is also possible.

Although the heat exchanging means 8 and 9 of Embodiments 1 and 2 are connected to the refrigerant circuit and the refrigerant flows through the heat exchanging means 8 and 9, water may flow instead of the refrigerant.

Note that the above-described embodiment is for illustrating the technology in the present disclosure, and various changes, replacements, additions, omissions, etc. can be made within the scope of the claims or equivalents thereof.

INDUSTRIAL APPLICABILITY The present disclosure is applicable to humidity control devices, air conditioners, etc. that use humidity control means.

1 humidity control device 2 housing 3 air supply channel 4 exhaust channel 5 air supply fan 6 exhaust fan 7 heat exchange means 7A2 supply air outflow surface 7B2 exhaust outflow surface 8 air supply side heat exchange means 8A inflow surface (surface on the long side )
8B outflow surface (surface on the long side)
9 Exhaust side heat exchange means 9A Inflow surface (long side surface)
9B outflow surface (surface on the long side)
12 Desiccant rotor 12A Rotating shaft 13 Humidity control motor 50 Humidity control unit (control unit)
201 Humidity control device 250 Humidity control unit (control unit)

Claims (5)

a housing;
an air supply passage provided inside the housing for introducing air from the outside and supplying the air to an air-conditioned space;
an exhaust flow path provided inside the housing for introducing air from the air-conditioned space and discharging the air to the outside;
heat exchange means disposed in the air supply flow path and the exhaust flow path for intersecting heat exchange between the air supplied to the air-conditioned space and the air discharged from the air-conditioned space;
an air supply side heat exchange means disposed downstream of the heat exchange means in the air supply flow path;
exhaust-side heat exchange means disposed downstream of the heat exchange means in the exhaust flow path;
a humidity control means having a rotor shape that is disposed across the air supply flow path and the exhaust flow path and rotates in a predetermined direction on the downstream side of the air supply side heat exchange means and the exhaust side heat exchange means;
In a humidity control device comprising
The humidity control means has a rotating shaft arranged along the vertical direction, and is installed at a lower position in the housing than the air supply side heat exchange means and the exhaust side heat exchange means.
Humidity control device. The air supply side heat exchange means can be switched to heat, cool, or perform neither heating nor cooling, and the exhaust side heat exchange means can heat or cool the air supply side heat exchange means. vice versa, or can be switched to do neither heating nor cooling,
The humidity control device according to claim 1. A plurality of the humidity control means are installed in the horizontal direction,
The humidity control device according to claim 1 or 2. The heat exchange means has a supply air outflow surface through which air supplied to the air-conditioned space flows out from the heat exchange means, and an exhaust outflow surface through which air discharged from the air-conditioned space flows out from the heat exchange means. prepared,
The air supply outflow surface and the exhaust outflow surface are provided at a predetermined inclination angle with respect to a horizontal plane,
The surface on the long side of the air supply side heat exchange means is installed so as to be substantially parallel to the air supply outflow surface,
The surface on the long side of the exhaust side heat exchange means is installed so as to be substantially parallel to the exhaust outflow surface,
The humidity control device according to any one of claims 1 to 3. an air supply blower that is disposed in the air supply flow path and supplies air to an air-conditioned space;
an exhaust air blower disposed in the exhaust flow path for discharging air from the air-conditioned space;
a humidity control means drive unit that rotationally drives the humidity control means;
a control unit that instructs at least the operation and stop of the air supply blower, the exhaust air blower, and the humidity control unit drive unit,
When the operation is stopped, the control unit heats the exhaust side heat exchange means and executes a drying mode in which the exhaust air blowing means and the humidity control means drive unit are operated for a predetermined time.
The humidity control device according to any one of claims 1 to 4.

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