Humidity control device

Abstract

To provide a humidity control device from which stored water is discharged without coming into contact with an electronic component when the whole humidity control device falls down.SOLUTION: A humidity control device 10 comprises a tank 12, a passage part 50, and an electronic component 64. Water is stored in the tank 12. The passage part 50 communicates with the tank 12. The electronic component 64 is arranged in the passage part 50. The passage part 50 comprises a first wall 51. The first wall 51 comprises an opening part 30 for establishing communication between the inside and the outside of the passage part 50. A downstream side end part 30a that is one end of the opening part 30 is located between the tank 12 and the electronic component 64.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a humidity control device. [Background technology]

[0002] Patent Document 1 discloses an air conditioner with a humidifying function. In the air conditioner of Patent Document 1, a desorption process is performed in which outdoor air is guided through a heater to a moisture absorbent material, thereby desorbing moisture from the moisture absorbent material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-247736 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the air conditioner of Patent Document 1, the moisture absorbent material is placed near the heater, so if the air conditioner were to tip over, the moisture in the moisture absorbent material would come into contact with the heater. Electronic devices such as heaters can malfunction when exposed to moisture, so there is a risk that the air conditioner of Patent Document 1 could malfunction if it were to tip over.

[0005] In view of the above problems, an object of the present invention is to provide a humidity control device in which water stored in a tank is drained without coming into contact with electronic components, even if the entire humidity control device is tipped over. [Means for solving the problem]

[0006] According to one aspect of the present invention, a humidity control device includes a tank, a passage, and an electronic component. The tank stores water. The passage communicates with the tank. The electronic component is disposed in the passage. The passage has a first wall having an opening. The opening communicates between the inside and outside of the passage. One end of the opening is located between the tank and the electronic component. [Effects of the Invention]

[0007] According to the humidity control device of the present invention, even if the entire humidity control device falls over, the water stored in the tank is drained through the opening in the first wall without coming into contact with the electronic components. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a humidity control device according to an example of an embodiment. [Figure 2] 2 is a cross-sectional view taken along the ZX plane of FIG. 1, taken along the line II-II. [Figure 3] FIG. 10 is a partially enlarged perspective view of the periphery of a third wall in the humidity control apparatus that has fallen over. [Figure 4] FIG. 4 is a partially enlarged perspective view taken from a different angle from that of FIG. 3. [Figure 5] FIG. 10 is a cross-sectional view of a humidity control device according to another embodiment. [Figure 6] 6 is a partially enlarged perspective view of the humidity control apparatus of FIG. 5 when it has fallen over. FIG. [Figure 7] 6 is a partially enlarged perspective view of the periphery of a third wall in the humidity control device of FIG. 5. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of a humidity control device will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and description thereof will not be repeated.

[0010] A humidity control apparatus 10 according to one example of an embodiment will be described with reference to Fig. 1. Fig. 1 is a perspective view showing the humidity control apparatus 10. The figure shows an X-axis, a Y-axis, and a Z-axis that are perpendicular to one another. In Fig. 1, the Z-axis is parallel to the upward vertical direction (upward in the direction of gravity), and the X-axis and Y-axis are parallel to the horizontal direction. The X-axis is the front-to-back direction of the humidity control apparatus 10, the Y-axis is the left-to-right direction, and the Z-axis is the up-to-down direction. In Fig. 1, the surface of the humidity control apparatus 10 on the near side of the X-axis is the front surface 11, the surface of the humidity control apparatus 10 on the far side of the X-axis is the back surface 13, and the surface of the humidity control apparatus 10 above the Z-axis is the top surface 17.

[0011] 1, the humidity control apparatus 10 includes a tank 12, a water supply unit 14, a blowout unit 16, and an operation panel 18. The humidity control apparatus 10 is, for example, a stationary air conditioner.

[0012] The humidity control device 10 in FIG. 1 has a humidification function. The humidification function is a function of humidifying air. The humidity control device 10 is capable of receiving water from a water supply unit 14. The water received from the water supply unit 14 is stored in a tank 12. The tank 12 can store up to 7 liters of water, for example. When the humidity control device 10 performs the humidification function, the water stored in the tank 12 is vaporized or atomized within the humidity control device 10. The vaporized or atomized water is then released from a blowout unit 16, thereby humidifying the air.

[0013] An operation panel 18 is provided on a top surface 17 of the humidity control apparatus 10. The operation panel 18 has an input unit 18a such as buttons that accept operations by the user, and an output unit 18b such as an LED indicator that displays information to the user. The humidity control apparatus 10 performs various functions in response to operations on the input unit 18a. The output unit 18b displays information such as the operating status of the humidity control apparatus 10 to the user.

[0014] Next, the interior and operation of the humidity control device 10 will be described with reference to Fig. 2. Fig. 2 is a cross-sectional view taken along II-II in the ZX plane of Fig. 1. Note that in order to illustrate the shape, Fig. 2 is a view of the ZX plane as seen from a perspective slightly tilted from the Y axis. Therefore, in Fig. 2, the Y axis is tilted from the direction perpendicular to the paper surface.

[0015] A humidifying filter 20 is provided inside the tank 12 of the humidity control device 10. The humidifying filter 20 is formed, for example, from a water-absorbent and breathable sheet. As a specific example, a plate-shaped sheet made of rayon is used as the humidifying filter 20. Water stored in the tank 12 is sucked into the humidifying filter 20.

[0016] A passage 50, which serves as a path for airflow, is provided inside the humidity control apparatus 10 on the rear surface 13 side (the right side of the X axis in FIG. 2 ). The passage 50 communicates with a tank 12 located at the bottom of the humidity control apparatus 10 (the lower side in the Z axis direction).

[0017] The passage section 50 has a first wall 51 located on the rear surface 13 side of the humidity control apparatus 10. The first wall 51 has an opening 30. The opening 30 connects the inside and outside of the passage section 50. The opening 30 may have any structure that allows a fluid to pass through, and in this embodiment has a lattice-like structure. When the humidity control apparatus 10 performs the humidification function, air outside the passage section 50 (i.e., outside the humidity control apparatus 10) is drawn into the passage section 50 through the opening 30 and sent to the tank 12. In other words, the air flow (air current) in the passage section 50 is along the Z axis in the figure, with the side above the Z axis being the upstream side and the side below the Z axis being the downstream side. In the following, the terms upstream side and downstream side may be used to indicate positional relationships.

[0018] Electronic components that operate inside the humidity control device 10 are arranged in the passage 50. Examples of electronic components arranged in the passage 50 include heat-generating components, temperature and humidity sensors, motors, and integrated circuits. In FIG. 2, a heater 64, which is a heat-generating component, is shown as an example of an electronic component. The heater 64 is provided at a distance from the first wall 51. The heater 64 is enclosed in a heater case 65.

[0019] A downstream end 30a, which is one end of the opening 30, is located between the tank 12 and the heater 64, which is an electronic component, in the Z-axis direction (the direction of air flow in the passage 50). An upstream end 30b, which is the other end of the opening 30, is located farther away (upstream) in the Z-axis direction than the heater 64 (electronic component) when viewed from the downstream end 30a.

[0020] An airflow guide member is provided in the passage 50 to guide the air that flows into the passage 50 from the opening 30 to the electronic components. The airflow guide member is provided between the upstream end 30b and the heater 64 in the Z-axis direction. In FIG. 2, an airflow guide plate 62 that is inclined toward the heater 64 is provided as the airflow guide member. The airflow that flows in from the upstream side of the airflow guide plate 62 is sent into the heater case 65 by the airflow guide plate 62 and guided to the heater 64.

[0021] As shown by the dashed line, a fan 60 is provided to the left (forward) of the second wall 52 in the X-axis direction. Although the detailed structure of the fan 60 is not shown, the fan 60 generates an airflow inside the humidity control device 10 by rotating.

[0022] The passage 50 also has a second wall 52 facing the first wall 51. A third wall 53 is provided between the heater 64 and the downstream end 30a in the Z-axis direction, connecting the first wall 51 and the second wall 52 in the X-axis direction. The opening 30 is divided by the third wall 53 into an upstream opening 31 above the Z-axis and a downstream opening 32 below the Z-axis. The third wall 53 is provided with a communication port 40 that connects the heater 64 side (upstream side) with the tank 12 side (downstream side). The communication port 40 may have any structure that allows fluid to pass through, and in this embodiment, has a lattice-like structure. The communication port 40 in the third wall 53 is provided at a distance from the first wall 51.

[0023] A closing member capable of closing the communication port 40 is attached to the communication port 40. In Fig. 2, a damper plate 42 that is provided so as to hang down in the direction of gravity using a hinge or the like is attached to the communication port 40. When the communication port 40 is open in the direction of gravity as shown in Fig. 2, the damper plate 42 opens the communication port 40. On the other hand, when the second wall 52 is on the upper side and the first wall 51 is on the lower side in the direction of gravity, the damper plate 42 closes the communication port 40.

[0024] Next, we will explain the air flow (air current) inside the humidity control apparatus 10 when the humidity control apparatus 10 performs the humidification function. First, when the fan 60 provided inside the humidity control apparatus 10 rotates, air outside the passage section 50 is drawn into the passage section 50 through the upstream opening 31, generating a first air current F1.

[0025] The first airflow F1 is guided to the electronic components by an airflow guide member provided in the passage 50. In Fig. 2, the first airflow F1 is guided to the heater 64 by an airflow guide plate 62 provided at an angle toward the heater 64, and a second airflow F2 is generated. The second airflow F2 is an airflow that flows within the passage 50 from the upper side (upstream side) along the Z axis to the lower side (downstream side).

[0026] In this embodiment, the upstream end 30b of the opening 30 is located upstream of the heater 64. The first airflow F1 flowing in from the upstream opening 31 includes a flow in the direction blowing in from the upstream side of the heater 64, and is smoothly guided to the heater 64.

[0027] In this embodiment, the passage 50 is provided with an airflow guide plate 62 that guides the air flowing into the passage 50 from the opening 30 to the heater 64. The area (passage area) of the surface of the heater 64 that receives the airflow is smaller than that of the upstream opening 31, but the first airflow F1 flowing in from the upstream opening 31 is smoothly guided to the heater 64 by the airflow guide plate 62.

[0028] The second airflow F2, which has passed through the heater 64 and been heated, flows downstream of the third wall 53 through the communication port 40.

[0029] In this embodiment, a third wall 53 connecting the first wall 51 and the second wall 52 is provided between the heater 64 and the downstream end 30a. The portion of the opening 30 downstream of the third wall 53 forms a downstream opening 32. As the fan 60 rotates, a third airflow F3 flows into the passage 50 from the downstream opening 32. The third airflow F3 merges with the second airflow F2 that has passed through the heater 64 and the communication port 40 to form a fourth airflow F4 that flows toward the tank 12. The second airflow F2 has a smaller air volume because it passes through the heater 64, which has a small passage area. However, the fourth airflow F4 merges with the third airflow F3, which is not affected by structures in the passage 50, to form an airflow with a larger air volume than the second airflow F2.

[0030] The fourth airflow F4 that reaches the tank 12 becomes a fifth airflow F5 that flows leftward in the X-axis direction, following the shape of the lower part of the tank 12. The humidifying filter 20 then humidifies the fifth airflow F5. Specifically, the fifth airflow F5 that passes through the humidifying filter 20 vaporizes the moisture in the humidifying filter 20 using heat provided by the heater 64. Therefore, the sixth airflow F6 that passes through the humidifying filter 20 becomes a humidified airflow that contains vaporized water (water vapor). Note that by merging with the third airflow F3 that does not pass through the heater 64, the temperatures of the fourth airflow F4 and the fifth airflow F5 become lower than those of the second airflow F2; however, the temperature of the fifth airflow F5 only needs to be high enough to vaporize the moisture in the humidifying filter 20.

[0031] The humidified sixth airflow F6 is attracted by the rotating fan 60 and becomes a seventh airflow F7 heading toward the fan 60. The seventh airflow F7 is guided by the fan 60 to the blowout section 16 and is discharged from the blowout section 16 to the outside of the humidity control apparatus 10 as an eighth airflow F8. In this way, the airflow containing water vapor is discharged to the outside of the humidity control apparatus 10, and the air outside the humidity control apparatus 10 is humidified.

[0032] Next, drainage when the humidity control apparatus 10 is tipped over will be described. Figures 3 and 4 are partially enlarged perspective views of the periphery of the third wall 53 when the humidity control apparatus 10 of Figure 2 has tipped (rotated) toward the rear surface 13 (to the right of the X axis). In order to illustrate the shape, Figures 3 and 4 show partially enlarged perspective views from different viewpoints. In Figures 3 and 4, the X-axis, Y-axis, and Z-axis have also rotated together with the humidity control apparatus 10 from the state of Figure 2. In Figures 3 and 4, the X-axis is parallel to the vertically upward direction (upward in the direction of gravity), and the Y-axis and Z-axis are parallel to the horizontal direction. Figure 3 shows a viewpoint from below the X-axis, and Figure 4 shows a viewpoint from above the X-axis.

[0033] If the humidity control apparatus 10 falls over, the water in the tank 12 flows into the passage 50. In this embodiment, the downstream end 30a, which is one end of the opening 30, is located between the tank 12 and the heater 64. Therefore, the water that has flowed into the passage 50 is drained to the outside of the humidity control apparatus 10 from the downstream opening 32, which is on the downstream side of the heater 64 (on the left side of the Z axis) of the opening 30. In other words, the water is drained without coming into contact with the heater 64, which is an electronic component.

[0034] In this embodiment, a third wall 53 is provided connecting the first wall 51 and the second wall 52 of the passage 50. The third wall 53 is provided between the heater 64 and the downstream end 30a. The communication opening 40 of the third wall 53 is provided at a distance from the first wall 51. Specifically, the communication opening 40 is provided closer to the second wall 52 than the first wall 51. The third wall outer end 48, which is the connecting portion between the third wall 53 and the first wall 51, is sealed with a packing or the like to prevent water from passing through. Therefore, even if a large amount of water flows into the passage 50, the water is blocked by the lower portion of the third wall 53 in the X-axis direction (the portion on the first wall 51 side).

[0035] In this embodiment, the heater 64 is provided at a distance from the first wall 51. Therefore, even if water enters the passage 50 from the upstream opening 31, the water is prevented from reaching the heater 64.

[0036] Furthermore, in this embodiment, a damper plate 42 capable of closing the communication opening 40 is attached to the communication opening 40. When the humidity control apparatus 10 falls onto the rear surface 13, the second wall 52 is on the upper side and the first wall 51 is on the lower side in the direction of gravity, and the damper plate 42 closes the communication opening 40. Therefore, water that has flowed into the passage 50 cannot pass through the communication opening 40 and is drained from the downstream opening 32.

[0037] As described above, according to this embodiment, even if the humidity control apparatus 10 falls onto the rear surface 13 side, the water in the tank 12 is drained from the downstream opening 32 without coming into contact with the heater 64, which is an electronic device.

[0038] The outer surface of the first wall 51 (the surface facing the outside of the passage 50) is preferably rounded (rounded). That is, as shown by the imaginary curved line 51x in FIG. 4, the first wall 51 is preferably curved so as to convex toward the outside of the passage 50. If the first wall 51 is curved so as to convex toward the outside of the passage 50, the contact area between the outer surface of the first wall 51 and the ground is reduced if the humidity control device 10 falls over. If the contact area between the outer surface of the first wall 51 and the ground is reduced, the area where the ground blocks the drainage from the downstream opening 32 is reduced, and the drainage is smoother from other areas. As shown by the curved line 51x, not only the first wall 51 but also the entire back surface 13 may be curved.

[0039] 3 and 4, a detachable lattice 34 may be attached to the opening 30. The detachable lattice 34 is a plate-like member with a lattice structure similar to that of the opening 30. The first wall 51 has a recessed structure from the back surface 13 of the humidity control device 10 toward the front surface 11 (above the X-axis in FIG. 4). The detachable lattice 34 is attached by fitting into the recessed structure of the first wall 51. By attaching the detachable lattice 34 to the opening 30, the opening 30 has a structure with a double lattice. The detachable lattice 34 can be attached and detached freely to and from the humidity control device 10. A user of the humidity control device 10 can remove the detachable lattice 34 from the humidity control device 10 for cleaning.

[0040] When the detachable grid 34 is attached to the humidity control apparatus 10, a gap is created between the opening 30 and the detachable grid 34. Therefore, if the humidity control apparatus 10 tips over onto its rear surface 13, the detachable grid 34 comes into direct contact with the ground, creating a gap between the ground and the opening 30. Therefore, if the detachable grid 34 is attached to the opening 30, when the humidity control apparatus 10 tips over, water drains smoothly from the downstream opening 32 without being blocked by the ground. Furthermore, as shown in FIG. 4 , an extension wall 56 may be provided in the gap between the opening 30 and the detachable grid 34, in the area located on the extension line of the third wall 53. The extension wall 56 prevents water drained from the downstream opening 32 from entering the upstream opening 31, preventing the water from reaching the heater 64.

[0041] 4, a protrusion 19 that protrudes outward from the passage 50 may be provided on the outer surface of the first wall 51. If the protrusion 19 is provided, when the humidity control device 10 falls over, the protrusion 19 comes into contact with the ground, and the outer surface of the first wall 51 is raised above the ground. Therefore, the downstream opening 32 is also raised above the ground, and when water is drained from the downstream opening 32, the drainage is not blocked by the ground and the water is discharged smoothly.

[0042] In the above embodiment, the humidity control apparatus 10 performs a humidification function to humidify the air using water stored in the tank 12. However, the humidity control apparatus 10 may also perform a dehumidification function to dehumidify the air. That is, the humidity control apparatus 10 may have a function to liquefy water vapor contained in the air and store it in the tank 12. Even if the humidity control apparatus 10 with a dehumidification function is tipped over, the water stored in the tank 12 by the dehumidification function is drained from the opening 30 without coming into contact with the heater 64.

[0043] Next, a humidity control device 10 according to another embodiment will be described with reference to Figures 5, 6, and 7. In Figures 5, 6, and 7, the same or corresponding parts as those in the above embodiment are designated by the same reference numerals, and description thereof will not be repeated.

[0044] Like Fig. 2, Fig. 5 is a cross-sectional view taken along the line II-II on the ZX plane of the humidity control device 10. Fig. 6 is a partially enlarged perspective view of the periphery of the third wall 53 when the humidity control device 10 in Fig. 5 has been turned (rotated) toward the rear surface 13 (to the right on the X axis). Fig. 7 is a partially enlarged perspective view of the periphery of the third wall 53 when the humidity control device 10 in Fig. 5 has not been turned over. The perspective in Fig. 7 is different from Fig. 6, as it is a perspective looking at the inside of the passage section 50 from the downstream opening 32 (from the direction of the third airflow F3).

[0045] 5, 6, and 7, first, a heater case 65 surrounding a heater 64 extends closer to the opening 30 (first wall 51) than in the embodiment of FIG. 2. Therefore, most of the first airflow F1 flowing from the upstream opening 31 into the passage 50 is sent into the heater case 65 by the airflow guide plate 62. Therefore, the volume of the second airflow F2 passing through the heater 64 increases.

[0046] 5, 6, and 7, a cover plate 70 (damper cover) is attached to the surface of the third wall 53 facing the tank 12. The cover plate 70 faces the opening 30. In other words, the cover plate 70 is a plate member having a surface extending in the YZ plane.

[0047] The cover plate 70 is disposed closer to the opening 30 in the X-axis direction than the communication port 40 of the third wall 53. Specifically, in Figures 5, 6, and 7, the cover plate 70 is disposed between the end of the communication port 40 on the first wall 51 side in the X-axis direction and the opening 30.

[0048] The cover plate 70 extends in the Y-axis direction over an area slightly larger than the communication port 40. In the Z-axis direction, the cover plate 70 extends to a position closer to the tank 12 (downstream side) than the downstream end 30a, which is one end of the opening 30.

[0049] The only surface on which the cover plate 70 extends is the YZ plane facing the opening 30 (rear surface 13). That is, at both ends of the cover plate 70 along the Y axis and at the downstream end of the cover plate 70 along the Z axis, there are no walls in the XY and ZX planes that intersect with the rear surface 13, and the cover plate 70 is open.

[0050] The cover plate 70 is also provided with drainage holes 71, 72, and 73. The drainage holes 71 are provided at the ends of the members that secure the cover plate 70 at both ends in the Y-axis direction of the cover plate 70, on the communication hole 40 side. The drainage holes 71 allow fluids such as water and air to pass through in the Y-axis direction.

[0051] The drain outlets 72 and 73 are provided at the end of the cover plate 70 on the communication port 40 side, penetrating the cover plate 70. The drain outlets 72 and 73 allow fluids such as water and air to pass through in the X-axis direction (the direction from the second wall 52 to the first wall 51).

[0052] The presence of the cover plate 70 can prevent the amount of air that has passed through the communication port 40 from being reduced by air drawn in from the downstream opening 32. Therefore, the heated air reaches the tank 12 while preventing a reduction in the amount of heated air. As a result, most of the second airflow F2 that has passed through the heater 64 and is heated is guided toward the tank 12, and the volume of the fourth airflow F4 that flows toward the tank 12 increases.

[0053] Furthermore, because the cover plate 70 extends to a position downstream of the downstream end 30a of the opening 30, the third airflow F3 flowing from the downstream opening 32 into the passage 50 is guided further downstream than the downstream end 30a. Therefore, the second airflow F2 and the third airflow F3 merge downstream of the downstream end 30a. As a result, the second airflow F2 flows into the tank 12 before its temperature drops. Furthermore, the fourth airflow F4 formed by the merger of the second airflow F2 and the third airflow F3 gains momentum toward the downstream side (downward along the Z axis in FIG. 5 ) and reaches the lower side of the humidifying filter 20.

[0054] Therefore, the fifth airflow F5 passing through the humidifying filter 20 spreads evenly from the upper side (the side closer to the communication opening 40) along the Z axis of the humidifying filter 20 to the lower side (the side farther from the communication opening 40). As a result, the moisture contained in the humidifying filter 20 is used without waste, and the fifth airflow F5 is efficiently humidified.

[0055] Furthermore, both ends of the cover plate 70 along the Y axis and the downstream end along the Z axis are open, and drain outlets 71, 72, and 73 are provided, so that water stored in the tank 12 is drained without coming into contact with the heater 64. In other words, water that flows into the upper side of the cover plate 70 in the X axis direction when the humidity control device 10 is overturned is drained from the downstream opening 32 through both ends of the cover plate 70 along the Y axis and the downstream end along the Z axis or drain outlets 71, 72, and 73.

[0056] The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments and can be embodied in various forms without departing from the spirit and scope of the present invention. The drawings mainly show each component in a schematic manner for ease of understanding, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, the materials, shapes, dimensions, etc. of each component shown in the above embodiments are merely examples and are not particularly limited, and various modifications are possible within a scope that does not substantially deviate from the configuration of the present invention. [Industrial Applicability]

[0057] The present invention provides a humidity control device. The present invention is particularly applicable to humidity control devices with a humidification function that humidifies air using water stored in a tank. The present invention is also applicable to humidity control devices with a dehumidification function that dehumidifies air and stores the liquefied moisture (water) in a tank. As described above, the present invention has industrial applicability. [Explanation of symbols]

[0058] 10: Humidity control device 12: Tank 19: protrusion 30: Opening 40: Communication port 50: Channel Department 51: 1st wall 52: Second wall 53: The third wall

Claims

1. a tank for storing water; a passage portion communicating with the tank; an electronic component disposed in the passage; Equipped with The passage portion has a first wall having an opening and a second wall facing the first wall, The opening communicates the inside and the outside of the passage portion, a third wall is provided between the first wall and the second wall, the third wall is provided closer to the tank than the electronic component, At least a portion of the opening is formed closer to the tank than the third wall.

2. The humidity control device according to claim 1 , wherein the electronic component is disposed at a distance from the first wall.

3. One end of the opening is formed closer to the tank than the third wall, The humidity control device according to claim 1 or 2, wherein the other end of the opening is located farther away from the one end of the opening than the electronic component.

4. The humidity control device according to claim 3 , further comprising an airflow guide member provided between the other end of the opening and the electronic component, the airflow guide member guiding air flowing into the passage portion from the opening to the electronic component.

5. The humidity control device according to claim 1 , wherein the first wall is curved so as to be convex toward an outside of the passage portion.

6. The humidity control device according to claim 1 , wherein a protrusion protruding toward an outside of the passage portion is provided on an outer surface of the first wall.

7. The third wall is provided with a communication port that connects the electronic component side and the tank side. The humidity control device according to any one of claims 1 to 6.

8. a closing member capable of closing the communication opening is attached to the communication opening of the third wall, When the communication port is in communication with the gravity direction, the closing member opens the communication port, The humidity control device according to claim 7 , wherein the closing member closes the communication opening when the second wall is on the upper side and the first wall is on the lower side with respect to the direction of gravity.

9. A tank for storing water; a passage portion communicating with the tank; an electronic component disposed in the passage; Equipped with the passageway has a first wall with an opening; The opening communicates the inside and the outside of the passage portion, one end of the opening is located between the tank and the electronic component, the passage portion has a second wall facing the first wall, a third wall connecting the first wall and the second wall is provided between the electronic component and one end of the opening, a communication port that communicates the electronic component side with the tank side is provided in the third wall, a cover plate is attached to a surface of the third wall facing the tank, the cover plate extending to a position closer to the tank than one end of the opening, the cover plate faces the opening, The cover plate is disposed closer to the opening than the communication opening of the third wall.

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