CN221463922U - Humidity control device and humidity control system comprising same - Google Patents

Abstract

A humidity control device and a humidity control system comprising the same optimize the setting position of an electrical component control box, ensure the compactness of the humidity control device and simplify the maintenance operation. The humidity control device includes the casing, sets up the humidifying unit and the electrical component control box in the casing, and humidity control device's casing has: a top plate and a bottom plate positioned on both sides of the housing in the up-down direction; the first side plate and the second side plate are positioned on two sides of the shell in a first direction perpendicular to the up-down direction, and air inlets for air to enter and exit the humidity control device are formed in the first side plate and the second side plate; and third and fourth side plates located on both sides of the housing in a second direction perpendicular to the up-down direction and the first direction, characterized in that the electric component control box is provided at an end portion located on one side of the second direction of the tuyere on any one of the first and second side plates where the tuyere is located, and both end portions of the electric component control box in the up-down direction are provided near the top plate and the bottom plate of the housing.

Description

Humidity control device and humidity control system including the same

Technical Field

The utility model relates to the technical field of household appliances, and more specifically to a humidity control device and a humidity control system comprising the humidity control device.

Background technique

At present, with the promotion and use of household ventilation systems, air conditioning equipment such as fresh air blowers and total heat exchangers are widely installed in users' homes. As people's living standards improve, the requirements for indoor air quality also increase. While ensuring the indoor air quality and temperature are appropriate, there are also specific requirements for the humidity of indoor air. For this reason, more and more users are beginning to choose to use air conditioning equipment with the function of regulating the humidity of the air (hereinafter also referred to as "humidity control device").

A humidity control device having a humidifying component or a dehumidifying component generally has an electrical component control box, in which a control circuit board on which electrical components such as resistors, capacitors, integrated circuits, etc. constituting an electrical control circuit are mounted is accommodated, and the control circuit board is connected to the wiring terminals on the control circuit board through plug-in wires to realize control of the components in the humidity control device (typically humidity control units such as a humidifying component and a dehumidifying component).

The existing electrical component control box is usually arranged inside the housing of the humidity control device. However, since the electrical component control box has to occupy a part of the internal space of the housing, the layout inside the housing cannot be further compacted, and the humidity control device as a whole becomes larger.

In addition, when a failure occurs and the electrical component control box needs to be repaired, the maintenance personnel must open the housing cover of the humidity control device to operate the wiring arranged inside the housing, and remove the electrical component control box from the housing of the humidity control device, which makes the maintenance cumbersome and time-consuming.

In addition, it is also conceivable to transfer the electrical component control box from the internal space of the humidification control device to the external space, for example, to set it on the side of the humidification control device adjacent to the air outlet (shell side), but the humidification control device is usually installed on the top of the ceiling, and maintenance personnel still have to use handheld tools to reach into the limited space on the top of the ceiling to loosen the fixation of the electrical component control box and operate the wiring of the electrical component control box, which makes maintenance operations inconvenient.

Utility Model Content

The utility model is made to solve the above-mentioned technical problems, and its purpose is to provide a humidity control device and a humidity control system including the humidity control device. In the humidity control device, the setting position of the electrical component control box is optimized, so that the maintenance operation is simplified while ensuring the compactness of the humidity control device.

In order to achieve the above-mentioned purpose, the utility model provides a humidity control device, including a shell, a humidity control unit arranged in the shell, and an electrical component control box, the shell of the humidity control device has: a top plate and a bottom plate located on both sides of the shell in the up-down direction; a first side plate and a second side plate located on both sides of a first direction perpendicular to the up-down direction of the shell, air outlets for air to enter and exit the humidity control device are provided on the first side plate and the second side plate; and a third side plate and a fourth side plate located on both sides of a second direction perpendicular to the up-down direction and the first direction of the shell, characterized in that the electrical component control box is arranged on an end portion located on one side of the second direction of the air outlet on any one of the first side plate and the second side plate where the air outlet is located, and the two ends of the electrical component control box in the up-down direction are arranged close to the top plate and the bottom plate of the shell.

According to the structure as described above, since the electrical component control box is arranged on the end portion located on the second direction side of the air outlet on any one of the first side panel and the second side panel where the air outlet is located, compared with the prior art where the electrical component control box is arranged inside the shell of the humidity control device or is arranged on the side (shell side) of the humidity control device adjacent to the air outlet, the electrical components that need to be accommodated in the electrical component control box can be arranged closer to the side, thereby avoiding obstructions to maintenance personnel caused by the piping joints on any one of the third side panel and the fourth side panel and the air outlets on the first side panel and the second side panel, thereby facilitating maintenance.

In addition, since the two ends of the electrical component control box in the upper and lower directions are arranged close to the top plate and the bottom plate of the shell, the height of the humidity control device can be utilized to set electrical components within the entire height range, thereby ensuring the compactness of the humidity control device.

Among them, as an example, the humidity control device has an air inlet on the first side panel and an air outlet on the second side panel, and the electrical component control box is arranged on the end of the first side panel where the air inlet is located on the second direction side of the air inlet.

Preferably, a pipe joint is provided on any one of the third side plate and the fourth side plate adjacent to the first side plate and the second side plate where the air outlet is located, and the electrical component control box is provided on the side close to the pipe joint in the second direction of the air outlet. In this case, the pipe joint is, for example, a pipe connection portion of the humidity control unit for connecting to an external pipe.

According to the structure as described above, the inspection port of the electrical component control box can be adjacent to or even close to the inspection port of the humidity control unit arranged in the humidity control device. Therefore, when the inspection port is set on the ceiling, it is only necessary to set the ceiling inspection port below the inspection port of the electrical component control box and the inspection port of the humidity control unit. During maintenance operations, maintenance personnel do not need to operate back and forth between the respective inspection ports of the humidity control unit and the electrical component control box, which greatly improves maintenance efficiency.

Preferably, the electrical component control box is arranged in any of the following ways:

(i) The electrical component control box may be arranged so that both ends of the electrical component control box in the upper and lower directions do not exceed the top plate and the bottom plate of the housing;

(ii) the electrical component control box may also be arranged so that either end of the electrical component control box in the upper and lower directions is flush with the top plate or the bottom plate of the housing, while the other end that is not flush with the top plate or the bottom plate of the housing does not exceed the bottom plate or the top plate of the housing;

(iii) The electrical component control box may be arranged so that both ends of the electrical component control box in the vertical direction are flush with the top plate and the bottom plate of the housing.

According to the above-mentioned structure, the electrical component control box will not exceed the top plate and the bottom plate of the shell, so the overall miniaturization of the humidity control device can be achieved, which is not only conducive to installation in the narrow space at the top of the ceiling and improves the freedom of installation, but also facilitates bundling and packaging during packaging and transportation. In addition, when a fault occurs and the electrical component control box needs to be repaired, the maintenance personnel only need to simply loosen the fastening components on the front of the electrical component control box to repair the electrical components inside the electrical control box, without the need to use hand-held tools to reach into the limited space at the top of the ceiling to loosen the fastening components on the side of the shell of the humidity control device, and there is no need to open the shell cover of the humidity control device to take the electrical component control box out of the shell of the humidity control device, thereby improving the convenience of maintenance operations, increasing maintenance efficiency, and reducing the possibility of small parts such as fastening components (screws) falling into the inside of the humidity control device or the unreachable places on the top of the ceiling, thereby reducing safety hazards.

In addition, preferably, the electrical component control box has a mounting base and a cover shell, and the electrical component control box is externally arranged on the one end portion of the first side panel or the second side panel of the humidity control device through the mounting base plate, and flanges are arranged on both sides of the cover shell of the electrical component control box in the second direction, and the flange located on one side of the second direction is flush with the side edge of the first side panel or the second side panel of the shell in the second direction.

Alternatively, flanges may be provided on both sides of the cover of the electrical component control box in the up-down direction, and the electrical component control box is configured such that the flanges provided on both sides of the cover of the electrical component control box in the up-down direction are flush with the top plate and the bottom plate of the housing. On this basis, preferably, the electrical component control box is configured such that the end of the cover of the electrical component control box located on one side in the second direction is flush with the side edge of the first side plate or the second side plate of the housing in the second direction.

By constructing as described above, the mounting base plate is first fixed to the air inlet side plate of the shell, and then the control circuit board is fixed to the mounting base plate. The control circuit board is covered with a cover shell, and the cover shell is fixed to the first side plate or the second side plate (for example, the air inlet side plate) using fastening components using flanges. Thus, the electrical component control box is firmly fixed to the first side plate or the second side plate by double fixation, thereby reducing the risk of the control circuit board falling off the shell of the humidity control device due to vibration.

In addition, preferably, the flange located on the side of the cover shell flush with the side edge of the first side plate or the second side plate has an avoidance hole for avoiding a fastening member for fixing the electrical component control box to the humidity control device.

By configuring as described above, the fastening member near the side edge of the first side panel or the second side panel (eg, the air inlet side panel) where the installation space is relatively limited can be less disturbed by the surroundings during installation and removal.

In addition, preferably, the flange located on the side of the side edge of the cover shell away from the first side panel or the second side panel has a gourd hole, and the fastening member passes through the gourd hole to position and fix the electrical component control box to the air inlet side panel of the humidity control device.

By constructing as described above, the gourd hole on the flange on the side of the side edge away from the first side panel or the second side panel (for example, the air inlet side panel) can be used to position the electrical component control box relative to the first side panel or the second side panel.

In addition, preferably, a handle for installing and removing the installation base plate is provided at the bottom of the installation base plate.

According to the above structure, the mounting base plate can be supported by the hand-held portion to prevent the mounting base plate from falling during installation and removal.

In addition, preferably, the electrical component control box is configured so that both ends in the upper and lower directions of the flange on the side of the cover shell that is flush with the side edge of the first side panel or the second side panel (for example, the air inlet side panel) do not exceed the top plate and the bottom plate of the shell, or either or both ends are flush with the top plate and/or the bottom plate of the shell.

According to the above configuration, the electrical component control box does not protrude from the top plate and the bottom plate of the housing, and thus, the humidity control device can be prevented from becoming larger in size.

The utility model also provides a humidity control system, comprising: the humidity control device described above; and an air supply device, wherein a supply fan is provided inside the air supply device.

The air outlet of the device is connected to the air inlet of the humidity control device through an air duct.

According to the above-described structure, the humidity control system having the humidity control device of the utility model described above can be made compact as a whole, and its maintenance operation can be made simpler.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a three-dimensional structural diagram of the humidity control device of the utility model observed from one direction.

An electrical component control box for accommodating a control circuit board is installed therein.

FIG. 2 is a three-dimensional structural diagram of the humidity control device of the present invention when viewed from another direction.

FIG. 3 is a three-dimensional structural diagram of the humidity control device shown in FIG. 1 with the cover of the electrical component control box removed.

FIG. 4 is an exploded perspective view of an electrical component control box in the humidity control device shown in FIG. 1 .

(Symbol Description)

100 humidity control device;

110 housing;

111 second side panel (air outlet side panel);

112 first side plate (air inlet side plate);

112a side edge;

113L third side panel (left side panel);

113R fourth side panel (right side panel);

114U top plate;

114D base plate;

IN air inlet;

OUT air outlet;

P1 pipe joint;

210 installing the base plate;

211 handheld unit;

220 control circuit board; 230 cover;

231 Flanging;

231a avoidance hole;

231b Gourd hole.

Detailed ways

Hereinafter, the humidity control device 100 of the present invention, more specifically, the installation position of the electrical component control box 200 on the humidity control device 100 will be described with reference to FIGS. 1 to 4. FIG. 1 is a three-dimensional structural diagram of the humidity control device 100 of the present invention, in which the electrical component control box 200 for accommodating the control circuit board 220 is installed, FIG. 2 is a three-dimensional structural diagram of the humidity control device 100 of the present invention observed from another direction, FIG. 3 is a three-dimensional structural diagram after the cover 230 of the electrical component control box 200 in the humidity control device 100 shown in FIG. 1 is removed, and FIG. 4 is an exploded three-dimensional diagram of the electrical component control box 200 in the humidity control device 100 shown in FIG. 1.

The humidity control system of the present invention comprises a humidity control device 100 and an air supply device (not shown).

Among them, the humidity control device 100 has a shell 110, a humidity control unit (not shown) arranged in the shell 110, and an electrical component control box 200 as shown in Figures 1 and 2. The air supply device is provided with a supply fan inside, and the air outlet of the air supply device is connected to the air inlet of the humidity control device through an air duct.

The humidity control device 100 is usually installed in the space at the top of the indoor ceiling together with the air supply device, and has a humidity control function of adjusting the humidity of the air passing through the humidity control device 100 and entering the indoor room by using a humidity control unit provided in the housing 110 of the humidity control device 100 .

As shown in Fig. 1 and Fig. 2, the housing 110 of the humidity control device 100 comprises: a top plate 114U and a bottom plate 114D located on both sides of the housing in the up-down direction; an air inlet side plate 112 and an air outlet side plate 111 located on both sides of the front-back direction (also called "first direction") perpendicular to the up-down direction of the housing 110; and a left side plate 113L and a right side plate 113R located on both sides of the left-right direction (also called "second direction") perpendicular to the up-down direction and the front-back direction (first direction) of the housing 110. In addition, in the present utility model, "front", "rear",

"Left", "right", "up" and "down" are defined according to the directions marked in the attached drawings.

Therefore, for the sake of convenience and clarity, the first direction represents the front-to-back direction in the drawings, and the second direction represents the left-to-right direction in the drawings.

In Figures 1 and 2, the air inlet side panel 112 is a side panel located in front of the shell 110 and having an air inlet IN for air to enter the humidity control device 100 (also called a "first side panel"); the air outlet side panel 111 is a side panel located at the rear of the shell 110 and having an air outlet OUT for air to flow out of the humidity control device 100 and enter the room (also called a "second side panel"); the air inlet IN and the air outlet OUT can be collectively referred to as air outlets for air to enter and exit the humidity control device 110.

As an example, the humidity control unit (not shown) is provided with a pipe joint P1 on any one of the left side plate 113L and the right side plate 113R (for example, the right side plate 113R in Figures 1 and 3) adjacent to the air inlet side plate 112 and the air outlet side plate 111 (for example, the air inlet side plate 112) where the air outlet (for example, the air inlet 1 N in Figures 1 and 2) is located, and the side plate (for example, the right side plate 113R) provided with the pipe joint P1 is a plate on the side for repairing the humidity control unit. The pipe joint P1 can be, for example, a pipe connection portion of the humidity control unit for connecting to an external pipe not shown. The left side plate 113L and the right side plate 113R are also called the third side plate and the fourth side plate.

The electrical component control box 200 is a component for controlling various components (typically humidity control units such as humidification components and dehumidification components) in the humidity control device 100. As shown in FIG3 , the electrical component control box 200 has a mounting base plate 210, a control circuit board 220, and a cover 230. As shown in FIG3 , the electrical component control box 200 is externally disposed on the first side plate or the second side plate of the housing 110 of the humidity control device 100 through the mounting base plate 210, for example, disposed on the end portion of the air inlet side plate 112 (i.e., the first side plate) where the air inlet 1 N is located, which is located on one side in the left-right direction of the air inlet 1 N (for example, the right side in FIG1 and FIG2 ).

Preferably, as shown in Fig. 3 and Fig. 4, a hand-held portion 211 for installing and removing the installation base plate 210 is provided at the bottom of the installation base plate 210. In addition, preferably, flanges 231 are provided on both sides of the cover 230 of the electrical component control box 200 in the left and right directions, and the flange 231 located on one side in the left and right directions (for example, the right side in Fig. 1 and Fig. 2) is flush with the side edge 112a of the air inlet side plate 112 of the housing 110 in the left and right directions.

As shown in FIGS. 1 to 3 , the two ends of the electrical component control box 200 in the height direction (upper and lower directions) are arranged close to the top plate 114U and the bottom plate 114D of the housing 110. As an example of “close to”, it can be arranged that the two ends of the electrical component control box 200 in the height direction (upper and lower directions) do not exceed the top plate 114U and the bottom plate 114D of the housing 110. In addition, it can also be arranged that any end (upper end or lower end) of the two ends in the height direction (upper and lower directions) of the electrical component control box 200 or both ends (upper end and lower end) are flush with the top plate 114U and/or the bottom plate 114D of the housing 110, and the other end (lower end or upper end) that is not flush with the top plate 114U or the bottom plate 114D of the housing 110 does not exceed the bottom plate 114D or the top plate 114U of the housing 110.

In addition, when the cover 230 of the electrical component control box 200 is provided with a flange 231, it can also be arranged that both ends of the flange 231 located on one side in the left-right direction (in Figures 1 and 2, for example, the right side) in the height direction (up and down direction) do not exceed the top plate 114U and the bottom plate 114D of the shell 110, or either end or both ends are flush with the top plate 114U and/or the bottom plate 114D of the shell 110.

When the cover 230 of the electrical component control box 200 is provided with a flange 231, as shown in FIG1 , the flange 231 located on one side in the left-right direction (in FIG1 , for example, the right side) has an avoidance hole 231a for avoiding the fastening component, and as shown in FIG2 , the flange 231 located on the other side in the left-right direction (in FIG2 , for example, the left side), that is, on the side of the side edge 112a of the air inlet side plate 112 away from the shell 110, is provided with a gourd hole 231b.

According to the installation position of the humidity control device 100 or the electrical component control box 200 on the humidity control device 100 of the utility model, since the electrical component control box 200 is arranged on the first side panel and the second side panel (for example, the air inlet side panel 112) where the air outlet (for example, the air inlet I N) is located, at the end portion on one side (for example, the right side) of the left and right direction of the air outlet (for example, the air inlet I N), therefore, compared with the situation in which the prior art is arranged inside the shell of the humidity control device or is arranged on the side (shell side) of the humidity control device adjacent to the air outlet, the electrical components that need to be accommodated in the electrical component control box 200 can be arranged closer to the side, thereby avoiding obstructions to the maintenance personnel caused by the piping joints on any one of the third side panel and the fourth side panel (for example, the right side panel 113R) and the air outlet (for example, the air inlet I N) on the first side panel and the second side panel, thereby facilitating maintenance. In addition, since the two ends of the electrical component control box 200 in the upper and lower directions are arranged close to the top plate 114U and the bottom plate 114D of the shell, the height of the humidity control device 100 can be utilized to set electrical components within the entire height range, thereby ensuring the compactness of the humidity control device 100.

Those skilled in the art will readily appreciate other advantages and modifications. Therefore, in its broader sense, the utility model is not limited to the specific details and representative embodiments shown and described herein. Therefore, modifications may be made without departing from the spirit or scope of the overall inventive concept as defined by the appended claims and their equivalents.

For example, in the present invention, as shown in Figures 1 to 3, the electrical component control box 200 is arranged on the right end of the air inlet IN on the air inlet side plate 112 where the air inlet IN is located, but the present invention is not limited to this, and can also be arranged on the left end of the air inlet IN on the air inlet side plate 112 where the air inlet IN is located.

In addition, the electrical component control box 200 is not limited to being arranged on the air inlet side plate 112 where the air inlet IN is located, and can also be arranged on the air outlet side plate 111 where the air outlet OUT is located. That is, in the present utility model, the electrical component control box 200 can be arranged on any one of the first side plate and the second side plate (the air outlet side plate 111 and the air inlet side plate 112) where the air outlet (the air inlet IN and the air outlet OUT) is located.

In addition, in the present invention, as shown in Fig. 1 to Fig. 3, the flanges 231 are provided on both sides of the left and right directions of the cover 230 of the electrical component control box 200, but the present invention is not limited thereto. The flanges may also be provided on both sides of the upper and lower directions of the cover 230 of the electrical component control box 200, or flanges may be provided on both sides of the left and right directions and the upper and lower directions of the cover 230 of the electrical component control box 200. In the case where flanges are provided on both sides of the upper and lower directions, the flanges on both sides of the upper and lower directions are arranged so that none of the flanges on the upper and lower directions does not exceed the top plate 114U and the bottom plate 114D of the housing in the height direction, or any one or two of the flanges on both sides of the upper and lower directions are flush with the top plate 114U and/or the bottom plate 114D of the housing 110 in the height direction, and the other one that is not flush with the top plate 114U or the bottom plate 114D of the housing 110 does not exceed the bottom plate 114D or the top plate 114U of the housing 110. In addition, when flanges are provided on both sides in the up and down directions, the end of the cover shell 230 located on one side in the left and right directions is flush with the side edges of the first side plate and the second side plate of the shell 110 (for example, the side edge 112a of the air inlet side plate 112) in the left and right directions.

Claims (13)

1. A humidity control device comprises a shell, a humidity control unit arranged in the shell and an electrical component control box,

The housing of the humidity control device has: a top plate and a bottom plate positioned at both sides of the housing in the up-down direction; the first side plate and the second side plate are positioned on two sides of the shell in a first direction perpendicular to the up-down direction, and air inlets for air to enter and exit the humidity control device are formed in the first side plate and the second side plate; and third and fourth side plates positioned on both sides of the housing in a second direction perpendicular to the up-down direction and the first direction,

It is characterized in that the method comprises the steps of,

The electric component control box is provided at an end portion on the second direction side of the tuyere on any one of the first side plate and the second side plate where the tuyere is located, and both end portions in the up-down direction of the electric component control box are provided near the top plate and the bottom plate of the housing.

2. A humidity control apparatus as in claim 1 wherein,

A piping joint is provided on any one of the third side plate and the fourth side plate adjacent to the first side plate and the second side plate where the tuyere is located,

The electrical component control box is provided on a side of the tuyere, which is close to the pipe joint, in the second direction.

3. A humidity control apparatus as in claim 2 wherein,

The pipe joint is a pipe connection portion of the humidity control unit for connecting with an external pipe.

4. A humidity control apparatus as in claim 1 wherein,

The humidity adjusting device is provided with an air inlet on the first side plate and an air outlet on the second side plate,

The electrical component control box is arranged at the end part, located at one side of the air inlet in the second direction, of the first side plate where the air inlet is located.

5. A humidity control apparatus as in claim 1 wherein,

The electrical component control box is provided in any one of the following ways:

(i) Both ends in the up-down direction of the electric component control box do not exceed the top plate and the bottom plate of the housing;

(ii) The electrical component control box is provided such that either one of both ends in the up-down direction of the electrical component control box is flush with the top plate or the bottom plate of the housing, and the other end not flush with the top plate or the bottom plate of the housing does not exceed the bottom plate or the top plate of the housing;

(iii) The electrical component control box is provided such that both ends in the up-down direction of the electrical component control box are flush with the top plate and the bottom plate of the housing.

6. A humidity control apparatus as in any one of claims 1 to 5 wherein,

The electrical component control box has a mounting base plate and a housing,

The electric component control box is externally arranged at one end part of the first side plate or the second side plate of the humidity adjusting device through the mounting bottom plate,

The electrical component control box is characterized in that flanges are arranged on two sides of the second direction of the housing, and the flanges on one side of the second direction are flush with the side edges of the first side plate or the second side plate of the shell in the second direction.

7. The humidity control apparatus as in claim 6 wherein,

The flange on the side of the housing flush with the side edge of the first side plate or the second side plate has a relief hole that is relieved for securing the electrical component control box to a fastening member of the humidity control device.

8. The humidity control apparatus as in claim 6 wherein,

The flange on the side of the side edge of the housing, which is far away from the first side plate or the second side plate, is provided with a hoist hole through which a fastening member passes to fix the electrical component control box to the first side plate or the second side plate of the humidity control device.

9. The humidity control apparatus as in claim 6 wherein,

The bottom of the mounting bottom plate is provided with a handheld part for mounting and dismounting the mounting bottom plate.

10. The humidity control apparatus as in claim 6 wherein,

The electrical component control box is provided such that both ends in the up-down direction of the flange on the side of the housing that is flush with the side edge of the first side plate or the second side plate do not exceed the top plate and the bottom plate of the housing, or either one of the ends or both of the ends is flush with the top plate and/or the bottom plate of the housing.

11. A humidity control apparatus as in any one of claims 1 to 5 wherein,

The electrical component control box has a mounting base plate and a housing,

The electric component control box is externally arranged at one end part of the first side plate or the second side plate of the humidity adjusting device through the mounting bottom plate,

Flanges are arranged on the two sides of the housing of the electric component control box in the up-down direction,

The electrical component control box is arranged in such a manner that the flanges of the housing of the electrical component control box, which are arranged on both sides in the up-down direction, are flush with the top plate and the bottom plate of the housing.

12. The humidity control apparatus as in claim 11 wherein,

The electrical component control box is provided such that an end of the housing of the electrical component control box on the second direction side is flush with a side edge of the first side plate or the second side plate of the housing in the second direction.

13. A humidity conditioning system, comprising:

The humidity conditioning device of any one of claims 1 to 12; and

An air supply device, an air supply fan is arranged in the air supply device,

And an air outlet of the air supply device is connected with an air inlet of the humidity adjusting device through an air pipe.