Industrial humidification module

Abstract

To provide a humidifying module having a frame capable of easily replacing a humidifying element and shortening a working time in a business air conditioner.SOLUTION: A substantially rectangular parallelepiped humidification module 1 houses and holds a substantially rectangular parallelepiped humidification element 4 inside a commercial air conditioner, a front side opening 54 for introducing air to be humidified into a frame body 2 is provided on a front surface of the frame body 2 of the humidification module 1, and a back side opening 55 for sending out the air after humidification to the outside of the frame body 2 is provided on a back surface of the frame body 2. In the humidification module, a humidification element 4 can be taken in and out without disassembling or deforming a frame body 2 by sliding the humidification element 4 in a predetermined procedure from at least one of a front side opening 54 and a back side opening 55.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a humidifying module that houses a humidifying element in a humidifying mechanism of an air conditioner used in large facilities such as buildings. [Background technology]

[0002] Large facilities such as buildings often have large-scale air conditioning systems appropriate for the size of the facility in order to meet the environmental standards of the Building Management Act, and such air conditioning systems often have a mechanism for humidifying the air.A common humidification mechanism is to wet a structure made of highly hygroscopic materials, such as paper, with water and then expose the air to this to humidify.This structure is called a humidifying element, and one or more humidifying modules, each consisting of a single humidifying element housed in a frame, are installed in the ducts inside the air conditioning system.

[0003] Conventionally, there is known a humidifying element that comprises multiple evaporator plates and a comb-shaped fixing member that connects the multiple evaporator plates, and that uses capillary action to draw water from the water supply portion of the evaporator plates, as in Patent Document 1. However, with this type of humidifying element, the amount of humidification of the air depends on the amount of water drawn up by the evaporator plates, so in large facilities, the evaporator plates cannot draw enough water, which can result in insufficient humidification.

[0004] To address this issue, a humidification module has been known in the past, in which humidification elements, each made up of a flat plate-shaped member and a corrugated cross-section plate-shaped member tightly attached and stacked together, are fitted into a rectangular frame, and water is sprayed from a water supply device toward an opening provided in the upper panel of the frame, as in Patent Document 2. Because the amount of water supply can be freely increased using the water supply device and the module can easily be made larger to increase the amount of evaporation, there is no need to worry about insufficient humidification due to insufficient water supply or evaporation, and this can be said to be suitable for air conditioning equipment in large facilities. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5322975 [Patent Document 2] Japanese Patent Publication No. 2022-78621 Summary of the Invention [Problem to be solved by the invention]

[0006] Because large volumes of air flow through the air conditioning equipment in large facilities like those described above, the humidification modules used require a sturdy frame to prevent the humidification elements from being blown away by the wind. In particular, wind pressure is applied to the openings through which the airflow enters and exits. To prevent the humidification elements from being blown away, a structure known as a "rise" is used, in which the perimeter of the frame is extended and bent at right angles to narrow the opening. For example, in a humidification module connected to a rectangular duct in an air conditioning system, the opening through which the airflow passes is also roughly rectangular, with rises of several centimeters on all four sides. The length and width of the opening are shorter than the humidification elements, so the humidification elements do not protrude from the opening. Meanwhile, the humidification elements used in humidification modules are often made of paper and are periodically replaced due to factors such as weakening, mineral precipitation in water, and mold growth. This means that humidification modules require periodic disassembly of the tightly assembled humidification module frame according to a specified procedure, replacement of the humidification elements with new ones, and then reassembly of the frame according to a specified procedure. Disassembling and reassembling the frame is time-consuming and labor-intensive, and while the frame is often made of durable, reusable materials such as resin or metal, there is also the issue that the entire frame may be discarded in order to avoid the hassle.

[0007] The present invention has been made to solve the above-mentioned problems of the conventional technology, and has an object to provide a humidifying module that allows quick replacement of only the humidifying element without disassembling the frame. [Means for solving the problem]

[0008] a frame body (2) configured to receive the humidifying element (4) and a frame (2) for accommodating the humidifying element (4); the humidifying element (4) is a substantially rectangular parallelepiped and includes a water-absorbing material; the frame body (2) is a substantially rectangular parallelepiped; an upper surface (61) of the frame body (2) is provided with a water supply gap (51) for supplying water to the frame body (2); a lower surface (62) of the frame body (2) is provided with a drainage gap (52) for draining water from the frame body (2); the interior of the frame body (2) is provided with an accommodation space (32) for accommodating the humidifying element (4) and a slide space (31) provided continuous with the accommodation space (32); and a front opening (54) is provided on the front surface of the frame body (2) for introducing air to be humidified into the interior of the frame body (2) and bringing it into contact with the attached humidifying element (4); A humidification module characterized in that the back of the frame body 2 is provided with a back side opening 55 for sending humidified air to the outside, and at least one of the front side opening 54 and the back side opening 55 is a replacement opening 53 for replacing the humidification element 4, and the humidification element 4 is inserted diagonally toward the slide space 31 with respect to the surface of the replacement opening 53, and then the humidification element 4 is changed in position inside the frame body 2 so that it is parallel to the surface of the replacement opening 53, and then the humidification element 4 is slid into the storage space 32, thereby making it possible to install the humidification element 4 without disassembling or deforming the frame body 2, and also making it possible to remove the humidification element 4 from the frame body 2 by following the reverse procedure.

[0009] The replacement port 53 is approximately rectangular, and the dimension of at least one side is limited by a rise 20 provided on the frame body 2, but the inner vertical or horizontal dimension of the replacement port 53 is longer than the outer vertical or horizontal dimension of the front of the humidifying element 4.

[0010] The frame body 2 of the humidification module 1 is an approximately rectangular shape with the same length and width dimensions when viewed in plan and bottom views, and has an upper mating portion 24 on the top side and a lower mating portion 25 on the bottom side, and the frame bodies 2 can be stacked vertically by mating the upper mating portion 24 of the lower frame body 2 with the lower mating portion 25 of the upper frame body 2, there are no protrusions on the frame body side 6 so multiple frame bodies 2 can be lined up side by side without any gaps, and by lining up multiple frame bodies 2 vertically and horizontally, installation can be made to match the size of the duct within the commercial air conditioning unit, and the humidification element 4 can be inserted and removed from the frame body 2 even while maintaining the lined up state.

[0011] The frame body 2 of the humidification module 1 has one or more holes or notches on at least either the front or back surface as fixing member attachment portions 70, and when the frame bodies 2 are stacked one on top of the other and fixed by mating the upper mating portion 24 of the lower frame body 2 with the lower mating portion 25 of the upper frame body 2, the fixing member attachment portion 70 of the lower frame body 2 and the fixing member attachment portion 70 of the upper frame body 2 are connected by a fixing member 73 that communicates with both.

[0012] A humidification module characterized in that the fixing members 73 for connecting and fixing the frame bodies 2 of the humidification modules 1 stacked one on top of the other are screws, the fixing member attachment portions 70 of the frame body 2 are upper connecting screw holes 71 and lower connecting screw holes 72, the upper connecting screw holes 71 are provided on both the front and back sides of the raised portion 21 on the upper surface of the frame body, and the lower connecting screw holes 72 are provided on a plate extending from the lower part of the frame body 2, and when the frame bodies 2 are stacked one on top of the other, the lower connecting screw holes 72 overlap with the upper connecting screw holes 71 and can be connected by passing a screw through them. [Effects of the Invention]

[0013] According to the present invention, by providing not only the storage space 32 for the humidifying element 4 but also the sliding space 31 in the frame 2 of the humidifying module 1, the humidifying element 4 can be attached and removed through the replacement opening 53 without disassembling or deforming the frame 2. This significantly reduces the time and effort previously required to replace the humidifying element 4.

[0014] According to the present invention, the replacement opening 53 of the humidifying module 1 is made substantially rectangular, and the dimension of at least one side of the replacement opening 53 is limited by a raised portion 20 provided on the frame 2, and the inner length of one vertical or horizontal side of the replacement opening 53 can be longer than the outer length of one vertical or horizontal side of the front of the humidifying element 4. With this structure, the raised portion 20 that limits the dimension of the replacement opening 53 prevents the humidifying element 4 from coming off the replacement opening 53 regardless of the procedure of sliding the humidifying element 4 to the sliding space 31 inside the frame 2, preventing unintentional removal of the humidifying element 4. At the same time, because the outer dimension of the corresponding side of the front of the humidifying element 4 is shorter than the inner dimension of one side of the replacement opening 53, by intentionally sliding the humidifying element 4 to the sliding space 31 inside the frame 2, the humidifying element 4 can be easily removed from the replacement opening 53 from the side whose outer dimension is shorter than the inner dimension of the replacement opening 53.

[0015] According to the present invention, the frame 2 of the humidification module 1 has upper and lower mating sections, referred to as the upper mating section 24 and the lower mating section 25. When the upper mating section 24 and the lower mating section 25 are mated, the frame 2 becomes a roughly rectangular parallelepiped with the same dimensions in plan and bottom views. This allows the frame 2 to be stacked vertically in any number of layers. Furthermore, since the frame side 6 lacks protrusions, the frame 2 can be arranged side-to-side without gaps. By arranging multiple modules vertically and horizontally, they can be installed to fit the duct size within a commercial air conditioning unit. The humidification element 4 can be inserted and removed from the frame 2 while maintaining the arrangement. Conventionally, replacing the humidification element 4 of an array of humidification modules 1 required disconnecting the humidification modules 1, disassembling each frame 2, and then reassembling them after replacement. This structure eliminates these steps and shortens installation time.

[0016] According to the present invention, holes or notches are provided on the front or back of the frame body 2 as fixing member attachment sites 70, and when the frame bodies 2 are stacked one on top of the other, fixing members 73 such as screws are passed through each fixing member attachment site 70 to connect and fix the upper and lower frame bodies 2 to each other. With this structure, the fixing members 73 are attached to the front or back of the frame body 2, so that the upper and lower frame bodies 2 can be securely fixed to each other without interfering with the frame bodies 2 lined up vertically or horizontally.

[0017] According to the present invention, when screws are used as fastening members 73 when stacking and connecting the frames 2 of the humidification module 1 one above the other and fixing them, upper connecting screw holes 71 can be provided as fastening member attachment sites 70 on the upper rises 21 of the frames on both the front and back sides, and lower connecting screw holes 72 can also be provided as fastening member attachment sites 70 on the lower part of the frames 2, so that when the frames 2 are stacked one above the other, the upper connecting screw holes 71 and the lower connecting screw holes 72 overlap. With this structure, the stacked frames 2 can be secured with screws on both the front and back sides, making them stable. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view of an example of a humidification module configuration according to the present invention; [Figure 2] Schematic diagram showing how to attach the humidifying element to the frame [Figure 3] 1 is a perspective view of an example of using a humidification module according to the present invention; [Figure 4] A perspective view of an example of an existing humidification module configuration [Figure 5] FIG. 1 is a front view showing an example of connection of humidification modules according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, an embodiment of the present invention will be described.

[0020] As shown in Figure 1, the humidifying module 1 of the present invention comprises a humidifying element 4 and a frame 2 that houses the humidifying element 4. The humidifying element 4 is roughly rectangular and is made of an absorbent material. The humidifying element 4 is preferably configured by stacking absorbent paper to form the roughly rectangular parallelepiped. Folding the absorbent paper into pleats is preferable, as this allows airflow through the inside of the humidifying element 4, improving humidification efficiency. To maintain the roughly rectangular parallelepiped shape of the humidifying element 4, the absorbent paper may be solidified with adhesive or pierced with skewers. Alternatively, the humidifying element 4 may be surrounded by a hard board to maintain its shape.

[0021] The frame 2 of the present invention is preferably made of a water-resistant material, preferably metal, resin, or wood. Furthermore, to save space, the frame 2 is preferably made by combining thin plate-like materials. The frame 2 is roughly rectangular, with a total of six surfaces (top, bottom, two side surfaces, front, and back) enclosing the storage space 32 for humidifying elements 4 and the sliding space 31 for sliding the humidifying elements 4. The front surface is provided with a front-side opening 54 with a raised portion 20, and the back surface is provided with a rear-side opening 55 with a raised portion 20. For example, as shown in Figure 1, the upper and lower portions between the two plates on the frame side 6 can be connected by L-shaped plates for the front and back, respectively. One side of the L-shaped upper plate forms the frame top surface 61, and the other side forms the frame top raised portion 21 that forms part of the front or back surface. On the frame top surface 61, the two plates form the upper joint 24 when the frame 2 is stacked one on top of the other, and the gap between them forms the water supply gap 51. One side of the L-shaped lower plate forms the frame bottom surface 62, and the other side forms the frame bottom rising portion 22, which forms part of the front or back surface. The two plates on the frame bottom surface 62 form the lower joint 25 when the frames 2 are stacked one on top of the other, as well as a place for the humidifying element 4, with the gap between them serving as a drainage gap 52. With this configuration, a front opening 54 and a rear opening 55 are enclosed by the frame side surface 6, the frame top rising portion 21, and the frame bottom rising portion 22, one of which serves as a replacement port 53 for inserting and removing the humidifying element 4. In a commercial air conditioning unit, airflow enters the installed humidifying module 1 through the front opening 54, comes into contact with the humidifying element 4, and exits through the rear opening 55. While the front opening 54 is shown as the replacement port 53 in FIG. 1 , the rear opening 55 may also serve as the replacement port 53. 1, the vertical inner dimension of replacement port 53 is shorter than the vertical outer dimension of the front of humidifying element 4, and the horizontal inner dimension of replacement port 53 is longer than the horizontal outer dimension of the front of humidifying element 4. In order to achieve these dimensions, front-side opening 54 and rear-side opening 55 are provided with frame upper surface rise 21 and frame lower surface rise 22, but the side that will become replacement port 53, i.e., front-side opening 54 in FIG. 1, may be configured without rise 20 on frame side surface 6.1 , if the horizontal inner dimension of the replacement opening 53 is shorter than the horizontal outer dimension of the front of the humidifying element 4 and the vertical inner dimension of the replacement opening 53 is longer than the vertical outer dimension of the front of the humidifying element 4, a configuration may be adopted in which the frame side surface 6 is provided with the frame side surface riser 23, and the frame top surface riser 21 and the frame bottom surface riser 22 are not provided. The side not providing the replacement opening 53, i.e., the rear side opening 55 in FIG. 1 , may be provided with the frame top surface riser 21, the frame bottom surface riser 22, and the frame side surface riser 23 as risers 20 to prevent the humidifying element 4 from unintentionally falling out of the opening. According to the configuration of FIG. 1 , the location inside the frame 2 where the humidifying element 4 is installed is the storage space 32, and the space above the storage space 32, surrounded by the frame top surface riser 21 on the front and rear sides, is the slide space 31. In the configuration of FIG. 1 , the upper surface 61 of the frame is above the slide space 31, and the water supply gap 51 is provided. The left and right sides of the sliding space 31 may be surrounded by the frame side surface 6, may be surrounded by other components, or may be left empty. Comparing the sizes of the rises 20 in Figure 1, the rise 21 on the upper surface side of the frame is larger than the rise 22 on the lower surface side of the frame by the amount that surrounds the sliding space 31 inside.

[0022] The procedure for replacing the humidifying element 4 through the replacement opening 53 when the slide space 31 is provided on the upper surface of the storage space 32 is described with reference to Figure 2. The interior of the frame 2 of the humidifying module 1 consists of the storage space 32 and the slide space 31 above it. In Figure 2, to more clearly show the positions of the storage space 32 and the slide space 31, the storage space 32 is lined diagonally downward to the left, and the slide space 31 is lined diagonally downward to the right. For the empty frame 2 shown in Figure 2(a), the humidifying element 4 is inserted diagonally from below into the replacement opening 53 as shown in Figure 2(b). Because the horizontal inner dimension of the replacement opening 53 is longer than the horizontal outer dimension of the front of the humidifying element 4, the humidifying element 4 enters the replacement opening 53 diagonally. The humidifying element 4 is then pushed further into the slide space 31. The humidifying element 4 is then slid inside the frame 2, and its front is reoriented so that it is parallel to the replacement opening 53 as shown in Figure 2(c). The humidifying element 4 is then lowered into the storage space 32, completing the installation, as shown in FIG. 2(d). With this structure, the vertical inner dimension of the replacement opening 53 is shorter than the vertical outer dimension of the front of the humidifying element 4, preventing the humidifying element 4 from unintentionally coming off the frame 2. To remove the humidifying element 4 from the replacement opening 53, simply lift the humidifying element 4 up to the slide space 31 and then slide it diagonally toward the replacement opening 53 to remove it. Unlike FIGS. 1 and 2, the slide space 31 may be located somewhere other than above the storage space 32, as long as the humidifying element 4 can be inserted through the replacement opening 53. If the slide space 31 is located on the left or right side of the storage space 32, the humidifying element 4 can be installed by inserting it into the replacement opening 53 from the right or left. In this case, the vertical inner dimension of the replacement opening 53 is longer than the vertical outer dimension of the front of the humidifying element 4.

[0023] An example of use of a single humidification module 1 of the present invention is shown in Figure 3. In a duct within a commercial air conditioner, the humidification module 1 takes in water sprayed from the water conduit 8 at its top through the water absorption gap 51 and wets the humidification element 4. The airflow enters the humidification module 1 through the front opening 54, comes into contact with the wet humidification element 4, is humidified, and then exits through the rear opening 55. Excess water not used for humidification is discharged through the drainage gap 52 and falls into the drain pan 9. The amount of humidification can be adjusted by adjusting the amount of water flowing through the water conduit 8.

[0024] As shown in FIG. 4 , in the existing humidification module 1, both the front opening 54 and the rear opening 55 are surrounded on all four sides by the frame upper side rising portion 21, the frame lower side rising portion 22, and the frame side side rising portion 23, making it impossible to replace the humidification element 4 from either the front opening 54 or the rear opening 55. Therefore, replacing the humidification element 4 requires disassembly of the frame 2, which takes approximately 90 seconds per element. In the humidification module 1 of the present invention, the humidification element 4 can be replaced through the replacement opening 53, so the replacement time is approximately 20 seconds per element, reducing the work time to less than one-quarter of that of the existing humidification module 1. Furthermore, while the existing humidification module 1 required the use of detachable parts such as screws to enable disassembly of the frame 2, the humidification module 1 of the present invention may instead use non-detachable parts such as rivets, or the frame 2 may be welded to make it non-disassembly, thereby broadening the options for the frame 2 configuration.

[0025] The humidification module 1 of the present invention has a frame 2 that is approximately rectangular in both vertical and horizontal dimensions when viewed from above and below. By mating the upper and lower mating portions 24 and 25 of the frame 2, the modules can be stacked one on top of the other without misalignment. The upper and lower mating portions 24 and 25 can be of any shape as long as they fit together, and they can be directly attached to the top and bottom of the frame 2, respectively, or detachably attached. Furthermore, the absence of protrusions on the frame side 6 allows multiple modules 2 to be arranged side-by-side without gaps. This configuration allows multiple humidification modules 1 to be arranged side-by-side within a commercial air conditioning system to fit the duct size. The position of the humidification modules 1 within the air conditioning system is predetermined, and they are often designed to be less likely to be misaligned front-to-back or side-to-side when installed side-by-side. However, the upper humidification modules 1 may collapse due to wind pressure, etc. To prevent this, the upper and lower frame bodies 2 can be connected and fixed with fixing members 73 when they are joined, thereby ensuring stable installation of the humidification module 1. Furthermore, by providing fixing members 73 for the frame body 2 on the front, back, or both, it is possible to fix the upper and lower connection at a position that does not come into contact with the upper, lower, left, or right frame bodies 2 and does not interfere with the connection. The upper and lower frame bodies 2 can be fixed by clamping or the like as fixing members 73. Alternatively, if holes or notches are provided in the upper and lower frame bodies 2 as fixing member attachment sites 70, screws, rivets, staples, etc. can be passed through the fixing members 73 when the frame bodies 2 are joined. With this configuration, even if there are multiple humidification modules 1, the humidification elements 4 can be replaced through the replacement ports 53 for each, eliminating the need to disassemble the connections and significantly reducing the time required for replacement compared to conventional methods.

[0026] Figure 5 shows an example of a connection using screws as fastening members 73. With this configuration, the upper surface 61 of the frame of the humidification module 1 is provided with an upper mating portion 24, and the lower surface 62 of the frame is provided with a lower mating portion 25, allowing for vertical mating. Upper connecting screw holes 71 are provided on both the front and rear sides of the upper frame surface riser 21 as fastening member attachment sites 70, and lower connecting screw holes 72 are provided on both the front and rear sides by bending the frame side surface 6 extending from the bottom of the humidification module 1. When stacking frames 2 vertically, the upper connecting screw holes 71 and the lower connecting screw holes 72 are aligned and fastened by passing screws through the fastening members 73. In Figure 5, each frame 2 has four upper connecting screw holes 71 and four lower connecting screw holes 72, two on the left and right sides of the front side and two on the left and right sides of the rear side, and these are fastened with screws when stacked vertically. This configuration allows for stable connection of the humidification modules 1 from top to bottom. As long as the configuration provides a stable frame 2, it is of course not important to increase or decrease the number of screws or screw holes used. If screws are used as the fixing members 73, the screw heads will protrude, but because the fixing members 73 are provided on the front and back, they do not come into contact with the frame members 2 on the top, bottom, left, or right sides and do not interfere with connection. Furthermore, when connected vertically, the raised portion 21 on the upper surface of the lower frame connects the frame side surface 6 of the lower frame with the extended frame side surface 6 of the upper frame, and the frame side surfaces 6 are connected with almost no irregularities, allowing them to be lined up side by side without any gaps. Furthermore, if the dimensions of the upper joint portion 24 and the lower joint portion 25 are matched, the drainage gap 52 of the upper humidifying module 1 and the water supply gap 51 of the lower humidifying module 1 will overlap, and during humidification, water discharged from the drainage gap 52 of the upper humidifying module 1 will be supplied to the water supply gap 51 of the lower humidifying module 1, so that no water is wasted and used for humidification.

[0027] The present invention is not limited to the above-described embodiment, and modifications can be made without departing from the spirit of the present invention. [Explanation of symbols]

[0028] 1 Humidification module 2 frame 20 Standing Up 21 Frame upper surface rising 22 Frame bottom side rise 23 Frame side rise 24 Upper fitting part 25 Lower mating part 31 Slide Space 32 storage spaces 4 Humidifying elements 51 Water supply gap 52 Drainage gap 53 Replacement port 54 Front opening 55 Rear opening 6 Frame side 61 Frame top surface 62 Bottom of frame 70 Fixing member attachment location 71 Upper connecting screw hole 72 Lower connecting screw hole 73 Fixing member 8 Water Pipe 9 Drain pan

Claims

1. A humidification module (1) for use in a commercial air conditioner, the humidification module (1) comprising a humidification element (4) and a frame (2) for accommodating the humidification element (4), the humidification element (4) being a substantially rectangular parallelepiped, the humidification element (4) comprising a water-absorbing material, the frame (2) being a substantially rectangular parallelepiped, the frame (2) having an upper surface (61) provided with a water supply gap (51) for supplying water to the frame (2), and a lower surface (62) provided with a drainage gap (52) for draining water from the frame (2), the interior of the frame (2) comprising a storage space (32) for accommodating the humidification element (4) and a slide space (31) provided continuous with the storage space (32), and a front opening (5) on the front surface of the frame (2) for introducing air to be humidified into the interior of the frame (2) and bringing it into contact with the attached humidification element (4). a rear opening (55) on the rear surface of the frame (2) for sending humidified air to the outside, and at least one of the front opening (54) and the rear opening (55) serving as a replacement opening (53) for replacing the humidifying element (4), wherein the humidifying element (4) is inserted obliquely with respect to the surface of the replacement opening (53) toward the slide space (31), and then the humidifying element (4) is changed in position inside the frame (2) so that it is parallel to the surface of the replacement opening (53), and then the humidifying element (4) is slid into the storage space (32), thereby making it possible to attach the humidifying element (4) without disassembling or deforming the frame (2), and the humidifying element (4) can be removed from the frame (2) by following the reverse procedure.

2. The humidification module described in claim 1, characterized in that the replacement port (53) is approximately rectangular, and the dimension of at least one side is limited by a raised portion (20) provided on the frame body (2), but the inner vertical or horizontal dimension of the replacement port (53) is longer than the outer vertical or horizontal dimension of the front of the corresponding humidification element (4).

3. The frame body (2) of the humidification module (1) is an approximately rectangular shape with the same length and width dimensions when viewed in plan and bottom views, has an upper mating portion (24) on the upper surface side and a lower mating portion (25) on the lower surface side, the frame bodies (2) can be stacked vertically by mating the upper mating portion (24) of the lower frame body (2) with the lower mating portion (25) of the upper frame body (2), there are no protrusions on the frame body side surface (6), multiple frame bodies (2) can be lined up left and right without gaps, multiple frame bodies (2) can be lined up vertically and horizontally to enable installation to match the size of the duct within the commercial air conditioning device, and the humidification element (4) can be inserted and removed from the frame body (2) even while maintaining the lined up state.

4. The humidification module according to claim 3, wherein the frame (2) of the humidification module (1) has one or more holes or notches on at least one of the front and rear surfaces as fixing member attachment portions (70), and when the frames (2) are stacked one on top of the other, when the upper mating portion (24) of the lower frame (2) is mated with the lower mating portion (25) of the upper frame (2) to fix the frames, the fixing member attachment portion (70) of the lower frame and the fixing member attachment portion (70) of the upper frame are connected by a fixing member (73) that communicates with both of them.

5. The humidification module of claim 4, characterized in that the fixing members (73) for connecting and fixing the frame bodies (2) of the humidification modules (1) stacked one on top of the other are screws, the fixing member attachment portions (70) of the frame body (2) are upper connecting screw holes (71) and lower connecting screw holes (72), the upper connecting screw holes (71) are provided on both the front and back sides of the upper frame body upper surface rising portion (21), and the lower connecting screw holes (72) are provided on a plate extending from the lower part of the frame body (2), and when the frame bodies (2) are stacked one on top of the other, the lower connecting screw holes (72) overlap the upper connecting screw holes (71) and can be connected by passing screws through them.

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