humidifier

Abstract

Regarding humidifiers applicable to fuel cell systems, the goal is to minimize the deterioration of the humidifying membrane inside the humidifier. [Solution] A humidifier is disclosed which includes a mid-case member having a first hole formed on one side and a second hole formed on the other side and having a space formed inside; a cartridge section which includes a plurality of cartridge members housed inside the mid-case member and arranged apart from each other in a first direction D1; and a humidifying membrane member housed inside the cartridge members, wherein both ends of the plurality of cartridge members in the first direction D1 are located within the width of the first hole in the first direction D1.

Description

Technical Field

[0001] The present invention relates to a humidifier, and more particularly to a humidifier applicable to a fuel cell system.

Background Art

[0002] A humidifier applied to a fuel cell system is a configuration for appropriately adjusting the humidity of air supplied to the fuel cell, and is a necessary configuration for optimizing the performance and lifespan of the fuel cell. The above-mentioned humidifier generally operates in a manner of adjusting the humidity of air supplied to the fuel cell by using the discharged water discharged from the fuel cell stack.

[0003] On the other hand, due to the output required by the fuel cell system with water accumulating at the bottom inside the humidifier, a large amount of air may suddenly flow into the humidifier. At this time, according to the prior art, the water accumulated at the bottom of the humidifier may be scattered by the flow of air and come into contact with the humidification membrane, which has acted as a factor promoting the chemical deterioration of the humidification membrane. In particular, according to the prior art, in some regions of the humidification membrane inside the humidifier, sweeping by a fluid such as air is not properly performed, and there has been a problem that the deterioration of the humidification membrane frequently occurs.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Therefore, an object of the present invention is to minimize the deterioration of the humidification membrane inside the humidifier by improving the structure of the humidifier.

Means for Solving the Problems

[0005] According to one aspect of the present invention for achieving the above objective, a humidifier is provided which includes a mid-case member having a first hole formed on one side and a second hole formed on the other side and having a space formed inside; a cartridge portion including a plurality of cartridge members housed inside the mid-case member and arranged spaced apart from each other in a first direction D1; and a humidifying membrane member housed inside the cartridge members, wherein both ends of the plurality of cartridge members in the first direction D1 are located within the width of the first hole in the first direction D1.

[0006] The mid-case member further includes a fixing portion housed inside the mid-case member and to which at least one side of the cartridge portion is fixed, wherein a portion of the cartridge portion protrudes from the fixing portion on both sides in a second direction D2 intersecting the first direction D1, and the first length, which is the length to which the cartridge portion protrudes from the fixing portion on one side in the second direction D2, can be different from the second length, which is the length to which the cartridge portion protrudes from the fixing portion on the other side in the second direction D2.

[0007] The first and second holes are formed on one side surface of the midcase member in a third direction D3 that intersects the first direction D1 and the second direction D2. At least a portion of the plurality of cartridge members has a window region in which through holes are formed. The window region includes a first window region that is biased toward one side of the cartridge member in the second direction D2 and in which one or more first through holes are formed, and a second window region that is biased toward the other side of the cartridge member in the second direction D2 and in which one or more second through holes are formed. Stepped sections can be formed in the first window region or the second window region by contacting portions of different thicknesses.

[0008] The window region may have a shape in which the thickness of the portion located outward in the second direction D2 with respect to the stepped section is thinner than the thickness of the portion located inward in the second direction D2 with respect to the stepped section.

[0009] The mid-case member further includes a fixing portion housed inside it, to which at least one side of the cartridge portion is fixed, and a portion of the cartridge portion protrudes from the fixing portion on both sides in a second direction D2 intersecting the first direction D1, and a bypass space can be formed between the fixing portion and the inner surface of the mid-case member, which connects i) a space in which the portion of the cartridge portion protruding from the fixing portion to one side in the second direction D2 is housed, and ii) a space in which the portion of the cartridge portion protruding from the fixing portion to the other side in the second direction D2 is housed.

[0010] The first and second holes are formed on one side surface of the mid-case member in a third direction D3 that intersects the first direction D1 and the second direction D2, and the bypass space can be provided facing each other in the first hole and the third direction D3, with the cartridge portion in between.

[0011] A portion of the bypass space can be defined by the inner surface of the mid-case member in the first direction D1.

[0012] The midcase member is housed inside the midcase member and further includes a fixing portion to which at least one side of the cartridge portion is fixed, wherein a portion of the cartridge portion protrudes from the fixing portion on both sides in a second direction D2 intersecting the first direction D1, the first hole and the second hole are each formed on one side of the midcase member in the direction intersecting the second direction D2, and at least a portion of the plurality of cartridge members has a window region in which through holes are formed, the window region includes a first window region which is offset to one side of the cartridge member in the direction toward the first hole in the second direction D2 and in which one or more first through holes are formed, and a second window region which is offset to one side of the cartridge member in the direction toward the second hole in the second direction D2 and in which one or more second through holes are formed, i) the first window region may be located at a position spaced outward from the first hole in the second direction D2, or ii) the second window region may be located at a position spaced outward from the second hole in the second direction D2.

[0013] The first hole is formed on one side surface of the midcase member in a third direction D3 that intersects the first direction D1 and the second direction D2, and the second hole can be formed on the other side surface of the midcase member opposite to the one side surface in the third direction D3.

[0014] The first hole may be formed on one side surface of the mid-case member in a third direction D3 that intersects the first direction D1 and the second direction D2, and the second hole may be formed on one side surface of the mid-case member in a first direction D1.

[0015] The mid-case member is housed inside the mid-case member and further includes a fixing portion to which at least one side of the cartridge portion is fixed, a portion of the cartridge portion protruding from the fixing portion on both sides in a second direction D2 intersecting the first direction D1, a window region in which a through hole is formed in at least a portion of the plurality of cartridge members, the window region is formed on one side of the plurality of cartridge members in the first direction D1, and a discharge hole can be formed on one side of the plurality of cartridge members in the direction intersecting the first direction D1.

[0016] The discharge holes can be formed on one side of the plurality of cartridge members in a third direction D3 that intersects the first direction D1 and the second direction D2.

[0017] The window region includes a first window region provided biased toward one side of the cartridge member in the second direction D2, where one or more first through holes are formed, and a second window region provided biased toward the other side of the cartridge member in the second direction D2, where one or more second through holes are formed. The discharge hole may include a first discharge hole formed overlapping the first window region in the second direction D2, and a second discharge hole formed overlapping the second window region in the second direction D2.

[0018] The discharge holes can be formed relatively adjacent to the outer ends of the window region in the second direction D2.

[0019] The humidifier further includes a drain pipe portion connected to one side surface in a third direction D3 that intersects the first direction D1 and the second direction D2 among the side surfaces of the mid-case member. At least a part of the plurality of cartridge members has a window region in which through holes are formed. The window region is provided offset to one side in the second direction D2 of the cartridge member, and includes a first window region in which one or more first through holes are formed, and a second window region provided offset to the other side in the second direction D2 of the cartridge member and in which one or more second through holes are formed. In the drain pipe portion, the portion connected to the mid-case member can be provided at a distance from the first window region and the second window region in the second direction D2.

[0020] In the drain pipe portion, the portion connected to the mid-case member can be located between the first window region and the second window region in the second direction D2.

Advantages of the Invention

[0021] According to the present invention, by improving the structure of the humidifier, deterioration of the humidifying film inside the humidifier can be minimized.

Brief Description of the Drawings

[0022] [Figure 1] FIG. is a view showing a first cross-sectional structure of a humidifier according to the present invention. [Figure 2] FIG. is a view showing a second cross-sectional structure of a humidifier according to the present invention and a view showing a cross-sectional structure around a first hole. [Figure 3] FIG. is an enlarged view showing a window region of a cartridge member provided in a humidifier according to the present invention. [Figure 4] FIG. is an enlarged view showing a bypass space formed in a humidifier according to the present invention and a cross-sectional structure around the same. [Figure 5] FIG. is a view for explaining a discharge hole of a cartridge member provided in a humidifier according to the present invention. [Figure 6]This is a diagram showing an enlarged cross-sectional structure of a drain pipe section provided in a humidifier according to the present invention and its surrounding configuration.

Embodiment for Carrying out the Invention

[0023] Hereinafter, the humidifier according to the present invention will be described with reference to the drawings.

[0024] humidifier FIG. 1 is a diagram showing a first cross-sectional structure of a humidifier according to the present invention, FIG. 2 is a diagram showing a second cross-sectional structure of a humidifier according to the present invention, and is a diagram showing a cross-sectional structure around the first hole. FIG. 3 is a diagram showing an enlarged view of a window area of a cartridge member provided in a humidifier according to the present invention, and FIG. 4 is a diagram showing an enlarged view of a bypass space formed in a humidifier according to the present invention and its surrounding cross-sectional structure. FIG. 5 is a diagram for explaining a discharge hole of a cartridge member provided in a humidifier according to the present invention, and FIG. 6 is a diagram showing an enlarged view of a cross-sectional structure of a drain pipe section provided in a humidifier according to the present invention and its surrounding configuration.

[0025] The humidifier according to the present invention may be a humidifier applicable to a fuel cell system. More specifically, the humidifier according to the present invention may be a device for maximizing the driving efficiency of a fuel cell by humidifying the air required for driving the fuel cell.

[0026] Referring to FIGS. 1 to 3, the humidifier 10 according to the present invention may include a mid-case member 100 having a first hole H1 formed on one side and a second hole H2 formed on the other side, and a cartridge part 200 including a plurality of cartridge members 210 accommodated inside the mid-case member 100. More specifically, the cartridge members 210 may be arranged to be spaced apart from each other in the direction of the first direction D1. Further, the humidifier 10 according to the present invention may include a humidifying film member 300 accommodated inside each cartridge member 210. As an example, in the drawings, a state in which three cartridge members 210 are arranged along the first direction D1 in the mid-case member 100 is illustrated.

[0027] On the other hand, the first hole H1 can provide a channel through which fluid (for example, a water-containing fluid discharged from a fuel cell) flows into the humidifier 10, and the second hole H2 can provide a channel through which fluid is discharged from the inside of the humidifier 10 to the outside. In this case, according to the present invention, means can be applied to reduce the overall flow velocity of the fluid flowing in through the first hole H1.

[0028] More specifically, according to the present invention, as illustrated in Figure 2, the multiple cartridge members 210 can have both ends in the first direction D1 positioned within the width of the first hole H1 in the first direction D1 of the mid-case member 100 (reference numeral A in Figure 2). That is, as illustrated in the drawing, if the cartridge section 200 consists of three cartridge members 210, both ends in the first direction D1 of the three cartridge members 210 can be positioned within the width of the first hole H1 in the first direction D1. In this case, the fluid flowing into the interior of the mid-case member 100 through the first hole H1 can flow into the interior space of the mid-case member 100 through i) the space between the mid-case member 100 and the outermost cartridge member 210, and ii) the space between two adjacent cartridge members 210, which can have the effect of increasing the cross-sectional area of ​​the fluid flowing in the inlet region of the humidifier. Moreover, according to the present invention, all of the multiple cartridge members 210 provided in the cartridge section 200 can collide with the fluid during the process of the fluid flowing into the humidifier. The two elements described above are factors that reduce the flow velocity of the fluid supplied to the humidifier. According to the present invention, when the humidifier is supplied with fluid, the degree to which the water accumulated in the mid-case member 100 is scattered by the flow velocity of the fluid flowing in through the first hole H1 is reduced, and as a result, direct contact between the scattered water and the humidifying membrane member 300 can be minimized.

[0029] On the other hand, as illustrated in Figures 1 and 4, the humidifier 10 according to the present invention may further include a fixing portion 400 housed inside the mid-case member 100, to which at least one side of the cartridge portion 200 is fixed. More specifically, the fixing portion 400 can be used to fix at least one side of the cartridge portion 200. Here, according to the present invention, a portion of the cartridge portion 200 may protrude from the fixing portion 400 on both sides of a second direction D2 intersecting a first direction D1. For example, the first direction D1 and the second direction D2 may each be horizontal, and the first direction D1 and the second direction D2 may be orthogonal to each other.

[0030] On the other hand, as illustrated in Figure 1, according to the present invention, the cartridge portion 200 can have an asymmetrical shape with respect to the fixed portion 400. More specifically, the first length of the cartridge portion 200, which is the length that protrudes from the fixed portion 400 to one side in the second direction D2, and the second length, which is the length that protrudes to the other side, can be different from each other.

[0031] On the other hand, according to one example of the present invention, the first hole H1 and the second hole H2 can be formed on one side surface of the mid-case member in a third direction D3 that intersects the first direction D1 and the second direction D2. For example, the third direction D3 may be the vertical direction, and the first hole H1 and the second hole H2 can each be formed on the upper surface of the mid-case member 100.

[0032] Furthermore, referring to Figures 1 and 3, a window region 220 can be formed in at least some of the multiple cartridge members 210, in which through holes 227 are formed. In the window region 220, the fluid in the mid-case member 100 can flow into the interior of the cartridge member 210, thereby enabling humidification of the air in the humidifying membrane member 300 through water vapor exchange between the fluid and the air flowing into the fuel cell. As an example, the drawings show a configuration in which three rows of through holes 227 are arranged on each side of the second direction D2 of the mid-case member 100 in the window region 220.

[0033] On the other hand, the window region 220 may include a first window region 222, which is biased to one side of the cartridge member 210 in the second direction D2 and in which one or more first through holes 227 are formed, and a second window region 224, which is biased to the other side of the cartridge member 210 in the second direction D2 and in which one or more second through holes 227 are formed. As shown in the drawings, the first window region 222 may be provided adjacent to the first hole H1, and the second window region 224 may be provided adjacent to the second hole H2.

[0034] Next, as illustrated in Figures 1 and 3, a stepped section 226 can be formed in the first window region 222 or the second window region 224 by the contact of portions of different thicknesses. The stepped section 226 can extend in a direction parallel to the third direction D3. This can be understood as the thickness of the window region on one side of the stepped section 226 in the second direction D2 being different from the thickness of the window region on the other side of the stepped section 226 in the second direction D2. More specifically, the window region 220 can be formed so that the portion located outside the stepped section 226 in the second direction D2 is thinner than the portion located inside the stepped section 226 in the second direction D2.

[0035] According to the prior art, the portion located relatively to the outside of the window region is a so-called dead zone, where it is relatively difficult to supply fluid to wash away water that has accumulated inside the midcase member and has splashed onto the humidifying membrane member. Here, as described above, if the thickness of the portion located outside the second direction D2 in the window region 220 with respect to the stepped section 226 is relatively thin, fluid can flow more smoothly into the midcase member 100 through the through-holes 227 in the portion located outside the second direction D2 in the window region 220, and water can be smoothly washed away from the humidifying membrane member. As an example, the drawing shows how the thickness of the portion where the outermost through-hole in the second direction D2 is formed among the three rows of through-holes 227 in the second direction D2 formed in the first window region 222 and the second window region 224 is formed is relatively thin with respect to the stepped section 226.

[0036] On the other hand, according to the present invention, the first length, which is the length by which the cartridge portion 200 protrudes from the fixed portion 400 in the second direction D2 toward the first hole H1, can be shorter than the second length, which is the length by which the cartridge portion 200 protrudes from the fixed portion 400 in the second direction D2 toward the second hole H2. This is to ensure that the fluid flowing into the mid-case member 100 through the first hole H1 flows evenly into the through-hole 227 formed in the first window region 222. In particular, according to the present invention, the fluid flowing in through the first hole H1 can be smoothly supplied to the through-hole 227 located outside the second direction D2 of the first window region 222, and according to the present invention, the aforementioned dead zone region can be eliminated.

[0037] Next, referring to the drawings, the humidifier 10 according to the present invention may further include a configuration that allows a water-containing fluid supplied to the mid-case member 100 through the first hole H1 to move to an area adjacent to the second hole H2 without passing through the cartridge section 200.

[0038] More specifically, as illustrated in Figures 1 and 4, a bypass space BP can be formed between the fixing portion 400 and the inner surface of the mid-case member, which connects i) a space in the cartridge portion 200 that accommodates a portion protruding from the fixing portion 400 to one side of the second direction D2, and ii) a space in the cartridge portion 200 that accommodates a portion protruding from the fixing portion 400 to the other side of the second direction D2.

[0039] More preferably, as described above, when the first hole H1 and the second hole H2 are formed on one side surface of the mid-case member 100 in a third direction D3 that intersects the first direction D1 and the second direction D2, the bypass space BP can be formed so that the first hole H1 and the second hole H2 face each other in the direction of the third direction D3, with the cartridge portion 200 in between. The drawing shows that the first hole H1 and the second hole H2 are formed on the upper surface of the mid-case member 100, and the bypass space BP is formed on the inner surface of the lower region of the mid-case member 100. On the other hand, as an example, a part of the bypass space BP can be defined by the inner surface of the mid-case member in the first direction D1.

[0040] On the other hand, as described above, when the first hole H1 and the second hole H2 are each formed on one side of the midcase member 100 in a direction intersecting the second direction D2 (for example, the third direction), the first window region 222 can be provided at a position spaced apart from the first hole H1 in the second direction D2, or the second window region 224 can be provided at a position spaced apart from the second hole H2 in the second direction D2. More preferably, the second window region 224 can be provided at a position spaced apart from the second hole H2 in the second direction D2. In a preferred example of the present invention, as illustrated in Figure 1 and others, at least a portion of the first window region 222 overlaps with the first hole H1 in the second direction D2, while the entire portion of the second window region 224 can be spaced apart from the second hole H2 in the second direction D2. This is to prevent the discharged water that has been scattered through the through-hole 227 formed in the second window region 224 from flowing into the humidifying membrane member.

[0041] On the other hand, as described above, the first hole H1 and the second hole H2 can be formed on one side of the midcase member 100 facing the third direction D3. However, contrary to the above, the first hole H1 may be formed on one side of the midcase member 100 facing the third direction D3, while the second hole H2 may be formed on the side of the midcase member 100 opposite to the third direction D3. Alternatively, the first hole H1 may be formed on one side of the midcase member 100 facing the third direction D3, while the second hole H2 may be formed on the side facing the first direction D1.

[0042] Next, referring to the drawings, the window region 220 according to the present invention can be formed on the side surface of the cartridge member 210 in the first direction D1. Here, in the cartridge member 210, a discharge hole 228 can be formed on the side surface in the direction intersecting the first direction D1. For example, the discharge hole 228 can be formed on one side surface of the cartridge member 210 in the third direction D3. If the third direction D3 is the vertical direction, the discharge hole 228 can be formed on the lower surface of the cartridge member 210.

[0043] The discharge hole 228 may be configured to discharge water that has flowed into the cartridge member 210 to the outside. More preferably, the discharge hole 228 can be formed in a position opposite to the window region 220 in the third direction D3. More preferably, the discharge hole 228 can be formed in a position opposite to the first window region 222 and the second window region 224 in the third direction D3. That is, the discharge hole 228 can include a first discharge hole formed overlapping with the first window region 222 in the second direction D2 and a second discharge hole formed overlapping with the second window region 224. When the discharge hole 228 is provided so as to overlap with the window region 220 in the second direction D2 (i.e., so as to face each other in the third direction D3), there is an advantage that water that has flowed into the cartridge member 210 through the window region 220 is smoothly discharged to the outside through the discharge hole 228 by gravity. As an example, considering that the washing phenomenon of water adhering to the humidifying membrane member by the fluid is relatively ineffective in the outer region of the window region 220 in the second direction D2, the discharge hole 228 can be formed more adjacent to the outer end of the window region 220 in the second direction D2.

[0044] On the other hand, referring to Figures 1 and 6, the humidifier 10 according to the present invention may further include a drain piping section 500 connected to one side surface of the mid-case member 100 in a third direction D3 that intersects the first direction D1 and the second direction D2. The drain piping section 500 may be configured to form a flow path through which water intermittently discharged from the fuel cell stack in the fuel cell system flows in. That is, according to the present invention, the water flowing into the humidifier 10 according to the present invention may consist of i) water discharged from the fuel cell stack and flowing in through the first hole H1 described above, and ii) water flowing in through the drain piping section 500.

[0045] Herein, according to the present invention, the portion of the drain piping section 500 connected to the mid-case member 100 can be provided spaced apart from the first window region 222 and the second window region 224 in the second direction D2. This is to prevent water flowing into the humidifier 10 via the drain piping section 500 from immediately flowing into the humidifying membrane member 300 via the first window region 222 or the second window region 224. More preferably, as illustrated in Figures 1 and 6, the portion of the drain piping section 500 connected to the mid-case member 100 can be located between the first window region 222 and the second window region 224 in the second direction D2.

[0046] Although the present invention has been described above with reference to limited embodiments and drawings, it goes without saying that the present invention is not limited thereto, and that various implementations are possible by persons with ordinary skill in the art to which the present invention pertains, within the equivalent scope of the technical concept of the present invention and the claims described below. [Explanation of Symbols]

[0047] 10 Humidifier 100 Mid-case components 200 Cartridge section 210 Cartridge component 220 window area 222 First window area 224 Second window area 226 Stepped section 227 Through hole 228 Discharge hole 300 Humidifying membrane component 400 Fixed part 500 Drain piping section H1 1st hole H2 2nd hole D1 1st direction D2 2nd direction D3 Third direction BP Bypass Space

Claims

1. A mid-case member having a first hole formed on one side and a second hole formed on the other side, with a space formed inside, A cartridge section comprising a plurality of cartridge members housed inside the mid-case member and arranged apart from each other in a first direction D1, The cartridge member includes a humidifying membrane member housed within the cartridge member, The humidifier is configured such that both ends of the plurality of cartridge members in the first direction D1 are located within the width of the first hole in the first direction D1.

2. The mid-case member further includes a fixing portion housed inside the mid-case member, to which at least one side of the cartridge portion is fixed, A portion of the cartridge section protrudes from the fixed portion on both sides in the second direction D2, which intersects the first direction D1. The humidifier according to claim 1, wherein the first length, which is the length to which the cartridge portion protrudes from the fixed portion to one side in the second direction D2, is different from the second length, which is the length to which the cartridge portion protrudes from the fixed portion to the other side in the second direction D2.

3. The first hole and the second hole are formed on one side surface of the mid-case member in the direction of the first direction D1 and the third direction D3 which intersects the second direction D2 which intersects the first direction D1. At least some of the plurality of cartridge members have a window region in which a through hole is formed. The aforementioned window area is A first window region is provided on one side of the cartridge member in the second direction D2, and one or more first through holes are formed therein. The cartridge member includes a second window region provided off-center to the other side of the second direction D2, in which one or more second through holes are formed, The humidifier according to claim 1, wherein a stepped section is formed in the first window region or the second window region by the contact of portions of different thicknesses.

4. The aforementioned window area is The humidifier according to claim 3, wherein the thickness of the portion located outward in the second direction D2 with respect to the stepped section is thinner than the thickness of the portion located inward in the second direction D2 with respect to the stepped section.

5. The mid-case member further includes a fixing portion housed inside the mid-case member, to which at least one side of the cartridge portion is fixed, A portion of the cartridge section protrudes from the fixed portion on both sides in the second direction D2, which intersects the first direction D1. The humidifier according to claim 1, wherein a bypass space is formed between the fixed portion and the inner surface of the mid-case member, connecting i) a space in the cartridge portion that accommodates a portion of the cartridge portion that protrudes from the fixed portion to one side of the second direction D2, and ii) a space in the cartridge portion that accommodates a portion of the cartridge portion that protrudes from the fixed portion to the other side of the second direction D2.

6. The first and second holes are formed on one side surface of the mid-case member in a third direction D3 that intersects the first direction D1 and the second direction D2. The humidifier according to claim 5, wherein the bypass space is provided facing each other in the first hole and the third direction D3, with the cartridge portion in between.

7. The humidifier according to claim 5, wherein a portion of the bypass space is determined by the inner surface of the mid-case member in the first direction D1.

8. The mid-case member further includes a fixing portion housed inside the mid-case member, to which at least one side of the cartridge portion is fixed, A portion of the cartridge section protrudes from the fixed portion on both sides in the second direction D2, which intersects the first direction D1. The first hole and the second hole are each formed on one side surface of the mid-case member in a direction intersecting the second direction D2. At least some of the plurality of cartridge members have a window region in which a through hole is formed. The aforementioned window area is The cartridge member is provided with a first window region that is biased to one side in the direction toward the first hole of the second direction D2, and in which one or more first through holes are formed, The cartridge member includes a second window region which is provided off-center to one side in the direction toward the second hole of the second direction D2, and in which one or more second through holes are formed, i) The first window region is provided at a position spaced outward from the first hole in the second direction D2, or ii) The second window region is provided at a position spaced outward from the second hole in the second direction D2, according to claim 1.

9. The first hole is formed on one side surface of the mid-case member in a third direction D3 that intersects the first direction D1 and the second direction D2. The humidifier according to claim 8, wherein the second hole is formed on the other side surface of the midcase member opposite to the one side surface in the third direction D3.

10. The first hole is formed on one side surface of the mid-case member in a third direction D3 that intersects the first direction D1 and the second direction D2. The humidifier according to claim 8, wherein the second hole is formed on one side surface of the mid-case member in the first direction D1.

11. The mid-case member further includes a fixing portion housed inside the mid-case member, to which at least one side of the cartridge portion is fixed, A portion of the cartridge section protrudes from the fixed portion on both sides in the second direction D2, which intersects the first direction D1. At least some of the plurality of cartridge members have a window region in which a through hole is formed. The window region is formed on one side of the plurality of cartridge members in the first direction D1, The humidifier according to claim 1, wherein in the plurality of cartridge members, a discharge hole is formed on one side surface in a direction intersecting the first direction D1.

12. The humidifier according to claim 11, wherein the discharge hole is formed on one side of the plurality of cartridge members in a third direction D3 that intersects the first direction D1 and the second direction D2.

13. The aforementioned window area is A first window region is provided on one side of the cartridge member in the second direction D2, and one or more first through holes are formed therein. The cartridge member includes a second window region provided off-center to the other side of the second direction D2, in which one or more second through holes are formed, The aforementioned discharge hole is A first discharge hole is formed in the second direction D2, overlapping with the first window region, The humidifier according to claim 11, further comprising a second discharge hole formed in the second direction D2 overlapping with the second window region.

14. The humidifier according to claim 11, wherein the discharge hole is formed relatively adjacent to the outer end of both ends of the window region in the second direction D2.

15. The midcase member further includes a drain piping section connected to one side surface of the midcase member that intersects with the first direction D1 and the third direction D3 which intersects with the second direction D2 which intersects with the first direction D1. At least some of the plurality of cartridge members have a window region in which a through hole is formed. The aforementioned window area is A first window region is provided on one side of the cartridge member in the second direction D2, and one or more first through holes are formed therein. The cartridge member includes a second window region provided off-center to the other side of the second direction D2, in which one or more second through holes are formed, In the drain piping section, the portion connected to the mid-case member is The humidifier according to claim 1, provided at a distance from the first window region and the second window region in the second direction D2.

16. In the drain piping section, the portion connected to the mid-case member is The humidifier according to claim 15, which is located between the first window region and the second window region in the second direction D2.

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