Humidifier

Abstract

To easily performance replacement or maintenance of a water absorption member.SOLUTION: A water absorption member (70) has: a first water absorption unit (71) that constitutes an upstream portion of the water absorption member (70); a second water absorption unit (72) that constitutes a downstream portion of the water absorption member (70), and is arranged so as to overlap the first water absorption unit (71); and welded units (75, 77) that fix the first water absorption unit (71) and the second water absorption unit (72) to each other.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present disclosure relates to a humidifying device.

Background Art

[0002] The humidifying device described in Patent Document 1 includes a water absorption member disposed in an air passage and a water storage unit that stores water supplied to the water absorption member. Water is imparted to the air flowing through the air passage from the water absorption member, thereby humidifying the air.

[0003] FIG. 6 of Patent Document 1 discloses a configuration in which a first water absorption part (first humidifying filter 4a) and a second water absorption part (second humidifying filter 4b) are arranged overlappingly in the air flow direction.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When the water absorption member has a configuration having two water absorption parts as in Patent Document 1, each water absorption part has to be handled individually, so there is a problem that replacement and maintenance of the water absorption member become complicated.

[0006] An object of the present disclosure is to enable easy replacement and maintenance of the water absorption member.

Means for Solving the Problems

[0007] The humidifying device according to the first aspect includes a water absorption member (70) that imparts moisture to the air flowing through the air passage (P), a drive mechanism (45) that rotates the water absorption member (70) about the axis along the air flow direction of the air passage (P), and a water storage unit (43) that stores the water supplied to the water absorption member (70). The water absorption member (70) includes a first water absorption part (71) that constitutes an upstream part of the water absorption member (70), a second water absorption part (72) that constitutes a downstream part of the water absorption member (70) and is arranged so as to overlap the first water absorption part (71), and welding parts (75, 77) that fix the first water absorption part (71) and the second water absorption part (72) to each other.

[0008] In the first aspect, in the air flow direction, the first water absorption part (71) and the second water absorption part (72) are arranged so as to overlap each other. The first water absorption part (71) and the second water absorption part (72) are fixed to each other by welding. Therefore, the first water absorption part (71) and the second water absorption part (72) can be handled as one part. As a result, the maintenance and replacement of the water absorption member (70) become easy.

[0009] The second aspect is that, in the first aspect, the welding parts (75, 77) include a first welding part (75) that fixes the outer peripheral edge part of the first water absorption part (71) and the outer peripheral edge part of the second water absorption part (72) to each other.

[0010] In the second aspect, the outer peripheral edge part of the first water absorption part (71) and the outer peripheral edge part of the second water absorption part (72) are welded. The first welding part (75) is formed by solidifying after the member melts. Therefore, the first welding part (75) has lower air permeability compared to the parts of the water absorption member (70) other than the welding parts (75, 77). Since the first welding part (75) is located at the outer peripheral edge part of the water absorption member (70), an increase in the ventilation resistance of the air flow can be suppressed.

[0011] In a third aspect, in the second aspect, the humidifying device includes a rotating shaft (44) provided on the axis of the water absorption member (70). The first water absorption part (71) has a first inner peripheral edge part (71c) that defines a first hole (73a) through which the rotating shaft (44) passes. The second water absorption part (72) has a second inner peripheral edge part (72c) that defines a second hole (73b) through which the rotating shaft (44) passes. The welding parts (75, 77) include a second welding part (77) that fixes the first inner peripheral edge part (71c) of the first water absorption part (71) and the second inner peripheral edge part (72c) of the second water absorption part (72) to each other.

[0012] In the third aspect, since the second welding part (77) is located at the inner peripheral edge part of the water absorption member (70), it is possible to suppress an increase in the ventilation resistance of the air flow.

[0013] In a fourth aspect, in any one of the first to third aspects, uneven parts (91, 92) with an uneven shape are formed on each of the upstream surface and the downstream surface of the first water absorption part (71). Uneven parts (93, 94) with an uneven shape are formed on each of the upstream surface and the downstream surface of the second water absorption part (72).

[0014] In the fourth aspect, by providing the uneven parts (91, 92) on the upstream surface and the downstream surface of the first water absorption part (71) respectively, the surface area is enlarged and the water diffusion effect is improved on both the upstream surface and the downstream surface of the first water absorption part (71). By providing the uneven parts (93, 94) on the upstream surface and the downstream surface of the second water absorption part (72) respectively, the surface area is enlarged and the water diffusion effect is improved on both the upstream surface and the downstream surface of the second water absorption part (72). As a result, the humidifying performance of the water absorption member (70) is improved.

[0015] In a fifth aspect, in the fourth aspect, the shapes of the uneven parts (91, 92) of the first water absorption part (71) and the shapes of the uneven parts (93, 94) of the second water absorption part (72) are different from each other.

[0016] In the fifth aspect, the water diffusion characteristics due to the uneven portions (91, 92) of the first water absorption portion (71) can be made different from the water diffusion characteristics due to the uneven portions (93, 94) of the second water absorption portion (72). As a result, uneven distribution of water in the water absorption member (70) can be suppressed.

[0017] In the sixth aspect, in the fourth or fifth aspect, the shape of the uneven portion (91) on the upstream surface of the first water absorption portion (71) is different from the shape of the uneven portion (92) on the downstream surface of the first water absorption portion (71). And / or, the shape of the uneven portion (93) on the upstream surface of the second water absorption portion (72) is different from the shape of the uneven portion (94) on the downstream surface of the second water absorption portion (72).

[0018] In the sixth aspect, the water diffusion characteristics due to the uneven portion (91) on the upstream surface of the first water absorption portion (71) can be made different from the water diffusion characteristics due to the uneven portion (92) on the downstream surface of the first water absorption portion (71). As a result, uneven distribution of water in the first water absorption portion (71) can be suppressed. The water diffusion characteristics due to the uneven portion (93) on the upstream surface of the second water absorption portion (72) can be made different from the water diffusion characteristics due to the uneven portion (94) on the downstream surface of the second water absorption portion (72). As a result, uneven distribution of water in the second water absorption portion (72) can be suppressed.

[0019] In the seventh aspect, in any one of the fourth to sixth aspects, on at least one of the upstream surface and the downstream surface of the first water absorption portion (71), a plurality of first convex portions (95a) extending along a direction orthogonal to the axial direction of the water absorption member (70) are formed. On at least one of the upstream surface and the downstream surface of the second water absorption portion (72), a plurality of second convex portions (95b) extending along a direction orthogonal to the axial direction of the water absorption member (70) are formed.

[0020] In the seventh aspect, water can be guided in the extending direction of the plurality of first convex portions (95a) of the first water absorption portion (71). Water can be guided in the extending direction of the plurality of second convex portions (95b) of the second water absorption portion (72). As a result, the water diffusion effect in the water absorption member (70) is improved.

[0021] In the eighth aspect, in the seventh aspect, the water absorption member (70) is configured such that the direction in which the plurality of first convex portions (95a) extend is different from the direction in which the plurality of second convex portions (95b) extend.

[0022] In the eighth aspect, the direction in which water is guided by the plurality of first convex portions (95a) can be made different from the direction in which water is guided by the plurality of second convex portions (95b). As a result, the diffusion effect of water in the circumferential direction in the water absorption member (70) is improved.

[0023] The ninth aspect includes, in any one of the first to eighth aspects, a frame body (51) that is rotationally driven by a drive mechanism (45) and holds the water absorption member (70) inside.

[0024] In the ninth aspect, the first water absorption portion (71) and the second water absorption portion (72) can be integrally rotated by the frame body (51).

[0025] The tenth aspect includes, in the ninth aspect, a water pumping portion (54) provided in the frame body (51) that pumps up the water in the water storage portion (43) and pours the pumped-up water into the water absorption member (70).

[0026] In the tenth aspect, as the frame body (51) rotates, the water pumping portion (54) pumps up the water in the water storage portion (43). As the frame body (51) rotates, the water pumping portion (54) pours the pumped-up water into the water absorption member (70).

[0027] The eleventh aspect includes, in the tenth aspect, the water pumping portion (54) being configured to pour water into the first water absorption portion (71).

[0028] In the eleventh aspect, the water pumping portion (54) supplies water to a portion on the upstream side of the water absorption member (70). For this reason, it is possible to suppress the supplied water from scattering to the downstream side of the water absorption member (70) due to the air flow. As a result, the humidifying ability can be improved.

[0029] In the 12th aspect, in any one of the 1st to 11th aspects, the diameter of the water absorption member (70) is 300 mm or less.

[0030] In the 12th aspect, the water absorption member (70) has a relatively small diameter. However, in the water absorption member (70), since the first water absorption part (71) and the second water absorption part (72) overlap in the air flow direction, the humidifying ability of the water absorption member (70) can be improved.

Brief Description of the Drawings

[0031]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Embodiments for Carrying Out the Invention

[0032] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below, and various modifications are possible without departing from the technical idea of the present disclosure. Since each drawing is for conceptually explaining the present disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary for easy understanding.

[0033] (1) Overall Configuration of the Air Cleaner The humidifying device of the present disclosure is applied to an air cleaner (10). The overall configuration of the air cleaner (10) will be described with reference to FIGS. 1 to 3. In the following description, the terms related to "upper", "lower", "front", "rear", "right", and "left" are generally based on the directions indicated by the arrows in FIG. 1.

[0034] The air cleaner (10) of the present embodiment cleans the air in the indoor space (S) which is the target space. In addition, the air cleaner (10) humidifies the air in the indoor space (S). The air cleaner (10) has a casing (11). The air cleaner (10) has, inside the casing (11), an air cleaning unit (20) for cleaning the air and a humidifying unit (40) for humidifying the cleaned air.

[0035] (1-1) Casing As shown in FIG. 1, the casing (11) is formed in a hollow box shape. The casing (11) is formed in a vertically long rectangular parallelepiped shape. The casing (11) has a top plate (11a), a bottom plate (11b), a front plate (11c), a rear plate (11d), a right side plate (11e), and a left side plate (11f).

[0036] An air outlet (12) is formed in the top plate (11a). The air outlet (12) is formed in a rectangular shape and is formed slightly towards the rear of the top plate (11a). Two flaps (12a) are provided at the air outlet (12). The flaps (12a) are formed in a plate shape extending across both left and right ends of the air outlet (12). The flaps (12a) open and close the air outlet (12) and adjust the direction of the blown air.

[0037] An operation panel (14) is provided on the top plate (11a). The operation panel (14) is located towards the front of the top plate (11a). The user can input the operation mode and various settings of the air cleaner (10) by operating the operation panel (14).

[0038] A first suction port (15A) is formed in the right side plate (11e). The first suction port (15A) is formed in a rectangular shape and is formed at the lower part of the right side plate (11e). An opening / closing lid (17) is provided at the upper part of the right side plate (11e). The opening / closing lid (17) opens and closes the access port (18) of the tank (42) of the humidifying unit (40). The opening / closing lid (17) is removable with respect to the casing (11). A pull-out opening (17a) is formed at the upper part of the opening / closing lid (17). The user removes the opening / closing lid (17) by putting a hand on the pull-out opening (17a). Thereby, the access port (18) is opened. The user can take out the tank (42) to the outside of the casing (11) through the access port (18).

[0039] A second suction port (15B) is formed in the left side plate (11f). The second suction port (15B) is formed in a rectangular shape and is formed at the lower part of the left side plate (11f).

[0040] A third suction port (15C) is formed at the lower end of the front plate (11c). The third suction port (15C) extends horizontally across both left and right ends of the casing (11). Hereinafter, when there is no need for particular distinction, the first suction port (15A), the second suction port (15B), and the third suction port (15C) may be referred to as the suction port (15).

[0041] As shown in FIG. 2, an air passage (P) is formed inside the casing (11). The first suction port (15A), the second suction port (15B), and the third suction port (15C) constitute the inflow end of the air passage (P). The air outlet (12) constitutes the outflow end of the air passage (P).

[0042] (1-2) Air purification unit The air purification unit (20) is located below the air passage (P). The air purification unit (20) purifies the air sucked in from the first suction port (15A), the second suction port (15B), and the third suction port (15C). The air purification unit (20) has, in order from the upstream side of the air passage (P), pre-filters (21, 22), HEPA filters (23, 24), deodorizing filters (25, 26), and a fan unit (30). In addition, the air purification unit (20) has discharge units (27, 28).

[0043] The pre-filters (21, 22), the HEPA filters (23, 24), the deodorizing filters (25, 26), and the discharge units (27, 28) are an example of a cleaning part that cleans the air in the target space (S).

[0044] As shown in FIG. 2, the casing (11) is provided with a first pre-filter (21) and a second pre-filter (22) of Two pre-filters are provided. The first pre-filter (21) is arranged at the first suction port (15A), and the second pre-filter (22) is arranged at the second suction port (15B). The first pre-filter (21) and the second pre-filter (22) collect relatively large dust in the air.

[0045] The casing (11) is provided with two HEPA filters, namely a first HEPA filter (23) (High Efficiency Particulate Air Filter) and a second HEPA filter (24). The first HEPA filter (23) is arranged between the first pre-filter (21) and the first deodorizing filter (25). The second HEPA filter (24) is arranged between the second pre-filter (22) and the second deodorizing filter (26). The first HEPA filter (23) and the second HEPA filter (24) are formed in a plate shape whose thickness direction corresponds to the horizontal direction. The first HEPA filter (23) and the second HEPA filter (24) have an electrostatic function of collecting particles by electrostatic force. An antibacterial agent may be added to the first HEPA filter (23) and the second HEPA filter (24). The first HEPA filter (23) and the second HEPA filter (24) may have a laminated structure in which two or more filter materials are laminated in the air passage direction.

[0046] The casing (11) is provided with a first deodorizing filter (25) and a second deodorizing filter (26) of Two deodorizing filters are provided. The first deodorizing filter (25) is arranged between the first HEPA filter (23) and the fan unit (30). The second deodorizing filter (26) is arranged between the second HEPA filter (24) and the fan unit (30). The first deodorizing filter (25) and the second deodorizing filter (26) are formed in a plate shape whose thickness direction corresponds to the horizontal direction. The first deodorizing filter (25) and the second deodorizing filter (26) are adsorption parts for adsorbing harmful substances and odor substances in the air. The first deodorizing filter (25) and the second deodorizing filter (26) have a substrate through which air can pass and an adsorbent such as activated carbon supported on the substrate.

[0047] (1-3) Fan unit The fan unit (30) is arranged at the lower part of the air passage (P). The fan unit (30) conveys the air in the air passage (P). The fan unit (30) is a unit having a centrifugal fan, specifically a sirocco fan. The fan unit (30) is of a double-suction type in which suction portions are respectively formed at both axial ends of its drive shaft (the rotation shaft of the impeller). The blowing portion of the fan unit (30) faces upward. The fan unit (30) has a fan motor (31) for driving the impeller. The fan motor (31) is housed in the housing. When the fan unit (30) is operated, the air in the indoor space (S) is sucked into the air passage (P) from the first suction port (15A), the second suction port (15B), and the third suction port (15C). The air flowing through the air passage (P) is blown out from the blowout port (12) into the target space.

[0048] (1-4) Discharge unit In the casing (11), there are a first discharge unit (27) and a second discharge unit (28) of Two discharge units are provided. The first discharge unit (27) is arranged above the first HEPA filter (23) and the first deodorizing filter (25). The second discharge unit (28) is arranged above the second HEPA filter (24) and the second deodorizing filter (26). The discharge unit (28) is arranged closer to the left side plate (11f) in the air passage (P).

[0049] The first discharge unit (27) and the second discharge unit (28) generate active species for oxidatively decomposing odor components in the air during discharge. The first discharge unit (27) and the second discharge unit (28) perform discharge between the tip of the linear discharge electrode and the plane of the plate-shaped counter electrode. The first discharge unit (27) and the second discharge unit (28) perform streamer discharge that forms a substantially conical discharge region from the tip of the discharge electrode toward the counter electrode.

[0050] The first discharge unit (27) is arranged in the first discharge path (32), and the second discharge unit (28) is arranged in the second discharge path (33). The first discharge path (32) is a passage for returning a part of the air blown out from the fan unit (30) to the upstream side of the first HEPA filter (23) together with the active species generated by the first discharge unit (27). The second discharge path (33) is a passage for returning a part of the air blown out from the fan unit (30) to the upstream side of the second HEPA filter (24) together with the active species generated by the second discharge unit (28).

[0051] (1-5) Humidification unit The humidification unit (40) is arranged between the air outlet of the fan unit (30) and the air outlet (12) of the casing (11). The humidification unit (40) is arranged in the humidification space (35) located at the upper part of the air passage (P). The humidification unit (40) imparts water to the air flowing through the air passage (P). As shown in FIG. 3, the humidification unit (40) includes a tank (42), a water tray (43), a humidification rotor (50), a rotating shaft (44), and a drive mechanism (45). The humidification rotor (50) has a water absorption member (70) that absorbs moisture.

[0052] The tank (42) is a container for storing water for humidification. The tank (42) appropriately supplies the water inside it to the water tray (43). The tank (42) is configured to be able to be taken in and out of the casing (11) through the above-described access port (18).

[0053] The water tray (43) stores the water supplied from the tank (42). The water tray (43) constitutes a water storage part for supplying water to the water absorption member (70) of the humidification rotor (50). The water tray (43) is an open-topped container. As shown in FIG. 3, the water tray (43) has a first tray part (43a) located below the tank (42) and a second tray part (43b) located below the humidification rotor (50). The first tray part (43a) and the second tray part (43b) communicate with each other through a communication passage (not shown).

[0054] The humidifying rotor (50) supplies the water contained in the water absorption member (70) to the air in the humidifying space (35). The humidifying rotor (50) divides the humidifying space (35) into a primary space (35a) and a secondary space (35b). The primary space (35a) is formed on the upstream side of the humidifying rotor (50). The secondary space (35b) is formed on the downstream side of the humidifying rotor (50). Details of the humidifying rotor (50) will be described later.

[0055] The rotating shaft (44) is provided at the axis of the water absorption member (70). The axis of the humidifying rotor (50) and the axis of the rotating shaft (44) coincide. The rotating shaft (44) extends along the flow direction of the air flowing through the humidifying space (35). The rotating shaft (44) extends across both the primary space (35a) and the secondary space (35b). The rotating shaft (44) is rotatably supported by two shaft support portions (44a) provided on the water tray (43) (strictly speaking, the second tray portion (43b)).

[0056] As schematically shown in FIG. 3, the drive mechanism (45) includes a motor (45a) and a pinion (45b) that is rotationally driven by the motor (45a). The pinion (45b) meshes with a gear portion (not shown in FIG. 3) formed on the outer peripheral surface of the humidifying rotor (50). When the motor (45a) rotates the pinion (45b), the humidifying rotor (50) rotates about the rotating shaft (44). Note that the drive mechanism (45) may be configured such that the motor (45a) directly rotationally drives the rotating shaft (44).

[0057] (1-6) Damper The air cleaner (10) includes a first damper (36) and a second damper (37). The first damper (36) is disposed between the fan unit (30) and the secondary space (41b) in the air passage (P). The second damper (37) is disposed between the primary space (41a) and the air outlet (12) in the air passage (P). The first damper (36) and the second damper (37) open and close in conjunction with each other. Specifically, when the first damper (36) is in the closed state, the second damper (37) is also in the closed state, and when the first damper (36) is in the open state, the second damper (37) is also in the open state.

[0058] (2) Detailed Configuration of Humidifying Rotor In the detailed configuration of the humidifying rotor (50), it will be described with reference to FIGS. 3 to 12. In the following description, the "axial direction", "radial direction", and "circumferential direction" generally refer to the axial direction, radial direction, and circumferential direction of the water absorption member (70), respectively. Also, the "axial direction" corresponds to the direction in which the axis of the water absorption member (70) extends, the direction in which the rotating shaft (44) extends, or the direction of the air flow flowing through the humidifying space (35). In addition, the "upstream side" and "downstream side" in the following description respectively mean the upstream side of the air flow flowing through the humidifying space (35) and the downstream side of the air flow flowing through the humidifying space (35).

[0059] The humidifying rotor (50) is formed in a disc shape. The axial direction of the humidifying rotor (50) corresponds to the air flow direction. The humidifying rotor (50) imparts the water contained in its water absorption member (70) to the air in the humidifying space (35). The humidifying rotor (50) has a frame body (51) that is rotationally driven by a drive mechanism (45) and a water absorption member (70) held by the frame body (51). The frame body (51) is made of a resin material. As shown in FIGS. 4 and 5, the frame body (51) has a first frame (52) and a second frame (53). The water absorption member (70) is held inside the frame body (51) by being sandwiched between the first frame (52) and the second frame (53).

[0060] A bucket (54) for pumping up the water in the water tray (43) is provided on the frame body (51). The bucket (54) alternately moves between a first position where it is immersed in the water inside the water tray (43) as the frame body (51) rotates and a second position where the water in the bucket (54) is supplied to the water absorption member (70).

[0061] The water absorption member (70) has a first water absorption part (71) that constitutes the upstream side part of the water absorption member (70) and a second water absorption part (72) that constitutes the downstream side part of the water absorption member (70).

[0062] (2-1) First Frame The first frame (52) is located on the upstream side of the frame body (51). The first frame (52) is located on the primary space (35a) side. The first frame (52) includes a first boss portion (52a) to which the rotation axis (44) is fixed, an annular first frame body (52b), and a plurality of first ribs (52c) that connect the first boss portion (52a) and the first frame body (52b).

[0063] A plurality of buckets (54) are attached to the side surface on the downstream side of the air flow in the first frame body (52b). The humidification rotor (50) of the present embodiment has 12 buckets (54), but this number is merely an example. A plurality of engagement holes are formed in the first frame body (52b) for the engagement portions of the respective buckets (54) to engage therewith (not shown). By engaging the engagement portion of the bucket (54) with the engagement hole, the bucket (54) is held on the side surface on the downstream side of the first frame body (52b). Each bucket (54) is arranged at equal intervals in the circumferential direction of the first frame (52).

[0064] The bucket (54) constitutes a water pumping portion for pumping the water in the water tray (43). As shown in FIG. 6, the bucket (54) is a water container in which a water storage space (55) for storing water is formed inside. The bucket (54) extends in the circumferential direction of the frame body (51) or the rotation direction of the humidification rotor (50). A water supply opening (56) is formed at the end of the bucket (54) in the rotation direction of the humidification rotor (50). The water supply opening (56) is an opening for introducing the water in the water tray (43) into the water storage space (55). A pipe portion (57) that protrudes toward the axis of the humidification rotor (50) is formed on the radially inner side of the bucket (54). The pipe portion (57) is located in the vicinity of the water supply opening (56) of the bucket (54). The pipe portion (57) forms a water conduction path for supplying the water in the water storage space (55) to the water absorption member (70).

[0065] A plurality of protruding portions (58) protruding radially inward are formed on the first frame body (52b). The protruding portions (58) are located at positions corresponding to the pipe portions (57) of the respective buckets (54). The plurality of protruding portions (58) is the same number as the plurality of buckets (54) and are arranged at equal intervals in the circumferential direction. When viewed in a cross-section perpendicular to the radial direction, the protruding portions (58) are formed in a concave shape that is recessed toward the upstream side. The pipe portion (57) fits inside the protruding portion (58). In a state where the pipe portion (57) fits into the protruding portion (58), a water injection port (59) is formed between the pipe portion (57) and the protruding portion (58). The water injection port (59) is an opening for pouring the water in the water storage space (55) into the water absorption member (70). The water injection port (59) opens toward the water absorption member (70). The water injection port (59) of the present embodiment opens toward the first water absorption portion (71). The water pumped up by the bucket (54) is poured into the first water absorption portion (71) through the pipe portion (57) and the water injection port (59).

[0066] (2-2) Second Frame The second frame (53) shown in FIG. 5 is located on the downstream side of the humidifying space (35) in the frame body (51). The second frame (53) is located on the secondary space (35b) side. The second frame (53) includes a second boss portion (53a) to which the rotation shaft (44) is fixed, an annular second frame body (53b), and a plurality of second ribs (53c) that connect the second boss portion (53a) and the second frame body (53b). A gear portion (53d) with which the pinion (45b) meshes is formed on the outer periphery of the second frame body (53b).

[0067] A plurality (six in this example) of pins (60) are formed on the second frame body (53b). The pins (60) are formed in a rod shape protruding from the upstream side surface of the second frame body (53b) toward the water absorption member (70) side. The pins (60) constitute a fixing member for fixing the water absorption member (70) to the frame body (51).

[0068] (3) Water Absorption Member As shown in FIG. 4, the water absorption member (70) is formed in a disc shape coaxial with the axis (X) of the rotation axis (44) of the frame body (51). The thickness direction of the water absorption member (70) corresponds to the axial direction or the air flow direction. As shown in FIGS. 7 and 8, the water absorption member (70) is configured by integrating a part of the first water absorption part (71) and a part of the second water absorption part (72). The first water absorption part (71) and the second water absorption part (72) overlap in the thickness direction of the water absorption member (70) or the air flow direction. A through hole (73) through which the rotation axis (44) passes is formed at the axis of the water absorption member (70).

[0069] (3-1) The first water absorption part The first water absorption part (71) is made of a resin material having water absorption and air permeability. The first water absorption part (71) is made of a non-woven fabric composed of resin fibers. A first hole (73a), which is an upstream part of the through hole (73), is formed at the axis of the first water absorption part (71). The first water absorption part (71) has a first upstream surface (81) which is its upstream surface and a first downstream surface (82) which is its downstream surface.

[0070] The first upstream surface (81) has an upstream main surface (81a), a first outer inclined surface (81b), and a first inner inclined surface (81c). The upstream main surface (81a) is a plane orthogonal to the axial direction. The first outer inclined surface (81b) is formed on the outer peripheral side of the first water absorption part (71). The first inner inclined surface (81c) is formed on the inner peripheral side of the first water absorption part (71). The first outer inclined surface (81b) and the first inner inclined surface (81c) are reverse taper-shaped surfaces that expand the diameter of the first water absorption part (71) as they go downstream from the upstream main surface (81a).

[0071] The first outer inclined surface (81b) is formed along the opening surface of the above-described water injection port (59). In other words, the water injection port (59) of the present embodiment opens toward the first outer inclined surface (81b) of the first water absorption part (71). The water injection port (59) may open toward the upstream main surface (81a).

[0072] The first downstream surface (82) is a plane orthogonal to the axial direction. The first downstream surface (82) is formed inside the water absorption member (70). The first downstream surface (82) faces the second water absorption part (72). The first downstream surface (82) substantially contacts the second water absorption part (72). The first downstream surface (82) is separated from the second water absorption part (72). The first downstream surface (82) constitutes a separation region separated from the second water absorption part (72).

[0073] (3-2) Second water absorption part The second water absorption part (72) is composed of a resin material having water absorption and air permeability. The second water absorption part (72) is composed of a non-woven fabric made of resin fibers. At the axis center of the second water absorption part (72), a second hole (73b) which is the downstream side part of the through hole (73) is formed. The second water absorption part (72) has a second upstream surface (83) which is its upstream side surface and a second downstream surface (84) which is its downstream side surface.

[0074] The second downstream surface (84) has a downstream side main surface (84a), a second outer inclined surface (84b), and a second inner inclined surface (84c). The downstream side main surface (84a) is a plane orthogonal to the axial direction. The second outer inclined surface (84b) is formed on the outer peripheral side of the second water absorption part (72). The second inner inclined surface (84c) is formed on the inner peripheral side of the second water absorption part (72). The second outer inclined surface (84b) and the second inner inclined surface (84c) are reverse tapered surfaces that expand the diameter of the second water absorption part (72) as they go upstream from the downstream side main surface (84a).

[0075] The second upstream surface (83) is a plane orthogonal to the axial direction. The second upstream surface (83) is formed inside the water absorption member (70). The second upstream surface (83) faces the first water absorption part (71). The second upstream surface (83) substantially contacts the first water absorption part (71). The second upstream surface (83) is separated from the first water absorption part (71). The second upstream surface (83) constitutes a separation region separated from the first water absorption part (71). Thus, the first water absorption part (71) and the second water absorption part (72) are overlapped substantially without a gap.

[0076] (3-3) Concavo-convex pattern of the first water absorption part As shown in FIGS. 9 and 10, a concavo-convex shaped first upstream side concavo-convex portion (91) is formed on the first upstream surface (81) of the first water absorption portion (71). The first upstream side concavo-convex portion (91) of the present embodiment is constituted by a plurality of first convex portions (95a) formed on the first upstream surface (81). The first convex portion (95a) protrudes upstream from the main body portion (the first main body portion (71a)) of the first water absorption portion (71). The plurality of first convex portions (95a) extend linearly along a direction orthogonal to the axial direction of the water absorption member (70). The plurality of first convex portions (95a) are arranged to be parallel to each other. The intervals between the plurality of first convex portions (95a) do not necessarily have to be equal intervals.

[0077] The first convex portion (95a) has a higher fiber density than the first main body portion (71a). The first convex portion (95a) is formed by fibers being knitted. The first convex portion (95a) has a function of increasing the surface area of the first water absorption portion (71). The water permeability of the first convex portion (95a) is lower than the water permeability of the first main body portion (71a). For this reason, the first convex portion (95a) also functions as a water guiding portion. On the first upstream surface (81), water is guided along the extending direction of the first convex portion (95a). As a result, in the first water absorption portion (71), water is likely to be diffused.

[0078] As shown in FIG. 11, a concavo-convex shaped first downstream side concavo-convex portion (92) is formed on the first downstream surface (82) of the first water absorption portion (71). The first downstream side concavo-convex portion (92) of the present embodiment is constituted by a first honeycomb portion (96a) having a honeycomb shape. The first honeycomb portion (96a) protrudes downstream from the first main body portion (71a). The first honeycomb portion (96a) is formed in a lattice shape having a plurality of substantially hexagonal holes when viewed from the axial direction. The first honeycomb portion (96a) is formed over the entire area of the first downstream surface (82), but in FIG. 11, for the sake of convenience, only a part of the area of the first honeycomb portion (96a) is shown.

[0079] The first honeycomb portion (96a) is composed of fibers with a higher density than the first main body portion (71a). The first honeycomb portion (96a) is formed by weaving a plurality of fibers. The first honeycomb portion (96a) has a function of increasing the surface area of the first water absorption portion (71). The water permeability of the first honeycomb portion (96a) is lower than the water permeability of the first main body portion (71a). On the first downstream surface (82), water is guided along the first honeycomb portion (96a). As a result, in the first water absorption portion (71), water is more likely to be diffused.

[0080] (3-4) Concave-convex pattern of the second water absorption portion As shown in FIG. 12, on the second upstream surface (83) of the second water absorption portion (72), a concave-convex shaped second upstream side concave-convex portion (93) is formed, and on the second downstream surface (84), a concave-convex shaped second downstream side concave-convex portion (94) is formed.

[0081] The second upstream side concave-convex portion (93) of the present embodiment is composed of a plurality of second convex portions (95b). The second convex portions (95b) protrude from the main body portion (the second main body portion (72a)) of the second water absorption portion (72) toward the upstream side. The configuration, characteristics, and functions of the plurality of second convex portions (95b) are basically the same as the configuration of the plurality of second convex portions (95b) described above. However, in the water absorption member (70), the direction in which the second convex portions (95b) extend is different from the direction in which the first convex portions (95a) extend. The direction in which the first convex portions (95a) extend and the direction in which the second convex portions (95b) extend form a predetermined angle θa. The angle θa is in a predetermined range greater than 0° and less than 90°. The direction in which the first convex portions (95a) extend and the direction in which the second convex portions (95b) extend are preferably perpendicular to each other. In other words, θa is preferably 90°.

[0082] In this configuration, the direction in which the first convex portions (95a) guide water and the direction in which the second convex portions (95b) guide water are different from each other. Therefore, as a whole of the water absorption member (70), water is more likely to be diffused in the circumferential direction.

[0083] As shown in FIG. 13, the second downstream uneven portion (94) is constituted by a second honeycomb portion (96b). Since the configuration, characteristics, and functions of the second honeycomb portion (96b) are the same as those of the first honeycomb portion (96a) described above, detailed description thereof will be omitted.

[0084] (3-5) First Welding Portion The water-absorbing member (70) has a first welding portion (75). The first welding portion (75) is a portion that fixes the outer peripheral edge portion (the first outer peripheral edge portion (71b)) of the first water-absorbing portion (71) and the outer peripheral edge portion (the second outer peripheral edge portion (72b)) of the second water-absorbing portion (72). In other words, the first welding portion (75) is a portion where the first outer peripheral edge portion (71b) and the second outer peripheral edge portion (72b) are integrated.

[0085] The first welding portion (75) is formed by solidifying after melting the first outer peripheral edge portion (71b) and the second outer peripheral edge portion (72b). Examples of the melting treatment include heat treatment and ultrasonic treatment. In the first welding portion (75), the minute voids inside are crushed by the melting treatment. For this reason, the porosity of the first welding portion (75) is smaller than the porosity of the first main body portion (71a) and the second main body portion (72a). The air permeability of the first welding portion (75) is lower than the air permeability of the first main body portion (71a) and the second main body portion (72a). The water permeability of the first welding portion (75) is lower than the water permeability of the first main body portion (71a) and the second main body portion (72a).

[0086] When forming the first welding portion (75), the first outer peripheral edge portion (71b) and the second outer peripheral edge portion (72b) are pressurized in the thickness direction. The first welding portion (75) is formed in a circular plate shape that protrudes radially outward of the water-absorbing member (70). The axial thickness of the first welding portion (75) is thinner than the axial thickness of the first main body portion (71a) and the second main body portion (72a).

[0087] As shown in FIG. 9 and the like, a plurality of holding holes (76) are formed in the first welded portion (75). The holding holes (76) are circular holes that penetrate the first welded portion (75) in the thickness direction. One pin (60) protruding from the second frame (53) is fitted into each holding hole (76). The first welded portion (75) constitutes an outer peripheral side fixing portion for fixing the outer peripheral edge portion of the water absorption member (70) to the frame body (51).

[0088] (3-6) Second welded portion The water absorption member (70) has a second welded portion (77). The second welded portion (77) is a portion for fixing the inner peripheral edge portion (the first inner peripheral edge portion (71c)) of the first water absorption portion (71) and the inner peripheral edge portion (the second inner peripheral edge portion (72c)) of the second water absorption portion (72). In other words, the second welded portion (77) is a portion where the first inner peripheral edge portion (71c) and the second inner peripheral edge portion (72c) are integrated. The first inner peripheral edge portion (71c) and the second inner peripheral edge portion (72c) define a through hole (73) inside the water absorption member (70).

[0089] The forming method and characteristics of the second welded portion (77) are basically the same as those of the first welded portion (75). The second welded portion (77) is formed in a circular plate shape protruding radially inward from the inner peripheral surface of the through hole (73) of the water absorption member (70). The axial thickness of the second welded portion (77) is thinner than the axial thickness of the first main body portion (71a) and the second main body portion (72a).

[0090] The second welded portion (77) is fixed to the first boss portion (52a) of the first frame (51). The second welded portion (77) may be fixed to the second boss portion (53a) of the second frame (53). The second welded portion (77) constitutes an inner peripheral side fixing portion for fixing the inner peripheral edge portion of the water absorption member (70) to the frame body. The second welded portion (77) may be fixed to a rotating shaft (44) passing through the water absorption member (70).

[0091] (3-7) Diameter of the water absorption member The diameter of the water absorption member (70) is 300 mm or less. Here, the water absorption member (70) refers to the maximum outer diameter of the water absorption member (70) including the first welded portion (75).

[0092] (4) Operating operation The operating operation of the air cleaner (10) will be described. The air cleaner (10) performs a cleaning operation and a humidifying cleaning operation. The cleaning operation is an operation for cleaning the air in the target space (S). In the cleaning operation, the humidifying function stops. The humidifying cleaning operation is an operation for simultaneously cleaning and humidifying the air in the target space (S).

[0093] (4-1) Cleaning operation In the cleaning operation, the fan unit (30) and the discharge units (27, 28) are driven. As a rule, the humidifying rotor (50) is in a stopped state. The first damper (36) and the second damper (37) are in an open state. The air in the indoor space (S) is sucked into the air passage (P) from each of the first suction port (15A), the second suction port (15B), and the third suction port (15C). The air sucked from the second suction port (15B) and the third suction port (15C) passes through each pre-filter (21, 22). In each pre-filter (21, 22), relatively large dust in the air is collected. On the upstream side of each pre-filter (21, 22), the odor components in the air are oxidized and decomposed by the active species released from each discharge unit (27, 28).

[0094] The air that has passed through each pre-filter (21, 22) passes through each HEPA filter (23, 24) and each deodorizing filter (25, 26) in order.

[0095] The air blown out from the fan unit (30) partly flows through the primary space (35a), and the remaining part flows through the secondary space (35b). The air in the primary space (35a) and the air in the secondary space (35b) flow upward along the side surface of the humidifying rotor (50) and are blown out into the indoor space (S) from the air outlet (12).

[0096] (4-2) Humidifying cleaning operation During the humidifying and cleaning operation, the fan unit (30) and the discharge units (27, 28) are driven. In principle, the humidifying rotor (50) is in a rotating state. As shown in FIG. 3, the first damper (36) and the second damper (37) are in a closed state. During the humidifying and cleaning operation, air is cleaned in the same manner as in the above-described cleaning operation.

[0097] All of the air blown out from the fan unit (30) flows through the primary space (35a). The air in the primary space (35a) passes through the humidifying rotor (50) in the axial direction. In the humidifying rotor (50), moisture of the water-absorbing member is imparted to the air. The air humidified by the humidifying rotor (50) flows out into the secondary space (35b) and is blown out from the air outlet (12) into the indoor space (S).

[0098] (4-3) Operation of the humidifying unit During the operation of the above-described air cleaner (10), the humidifying unit (40) performs the following operation.

[0099] The drive mechanism (45) rotates the rotary shaft (44). Thereby, the humidifying rotor (50) rotates about the rotary shaft (44). When the frame body (51) rotates, the bucket (54) revolves around the axis of the rotary shaft (44). When the bucket (54) moves to the lower side of the frame body (51) and enters the water in the water tray (43), the water in the bucket (54) enters the water storage space (55) through the water supply opening (56). When the bucket (54) moves upward and exits the water in the water tray (43), water is pumped into the water storage space (55) of the bucket (54).

[0100] When the bucket (54) further moves upward and reaches near the upper end of the humidifying rotor (50), the water in the water storage space (55) passes through the pipe portion (57) and the water injection port (59) and is supplied to the first water absorption portion (71). Specifically, the water in the water injection port (59) is poured onto the first outer inclined surface (81b) of the first water absorption portion (71). This water moves to the surface and inside of the first water absorption portion (71). The water in the first water absorption portion (71) also moves to the second water absorption portion (72) so as to follow the air flow.

[0101] When the frame body (51) further rotates, the bucket (54) moves to the lower side of the humidifying rotor (50) and enters the water in the water tray (43) again. The above operations are continuously repeated.

[0102] (5) Features (5-1) The water absorption member (70) includes a first water absorption part (71) that constitutes an upstream part of the water absorption member (70), a second water absorption part (72) that constitutes a downstream part of the water absorption member (70) and is arranged so as to overlap the first water absorption part (71), and welding parts (75, 77) that fix the first water absorption part (71) and the second water absorption part (72) to each other.

[0103] By fixing the first water absorption part (71) and the second water absorption part (72) with the welding parts (75, 77), the first water absorption part (71) and the second water absorption part (72) can be handled integrally. Therefore, compared with the case where the first water absorption part (71) and the second water absorption part (72) are completely separate components, the operations related to the attachment, removal, replacement, and maintenance of the water absorption member (70) can be easily performed.

[0104] When the first water absorption part (71) and the second water absorption part (72) are completely separate components, a holding structure for the first water absorption part (71) and a holding structure for the second water absorption part (72) are required individually. On the other hand, by integrating the first water absorption part (71) and the second water absorption part (72), the holding structure of the water absorption member (70) can be simplified.

[0105] By fixing the first water absorption part (71) and the second water absorption part (72) with the welding parts (75, 77), it is possible to suppress the separation of the first water absorption part (71) and the second water absorption part (72). As a result, the overall thickness of the water absorption member (70) can be suppressed. In addition, in the water absorption member (70), since water can move between the first water absorption part (71) and the second water absorption part (72), the humidifying ability of the water absorption member (70) can be improved.

[0106] (5-2) The first welding part (75) fixes the first outer peripheral edge part (71b) of the first water absorption part (71) and the second outer peripheral edge part (72b) of the second water absorption part (72) to each other.

[0107] Since the first welding part (75) has low air permeability, it may cause an increase in the ventilation resistance of the water absorption member (70). The first welding part (75) of the present embodiment is located at the outer peripheral edge part where the amount of air flowing is small among the water absorption members (70). Therefore, an increase in the ventilation resistance of the water absorption member (70) can be suppressed.

[0108] (5-3) The second welding part (77) fixes the first inner peripheral edge part (71c) of the first water absorption part (71) and the second inner peripheral edge part (72c) of the second water absorption part (72) to each other.

[0109] Since the second welding part (77) has low air permeability, it may cause an increase in the ventilation resistance of the water absorption member (70). The second welding part (77) of the present embodiment is located at the inner peripheral edge part where the amount of air flowing is small among the water absorption members (70). Therefore, an increase in the ventilation resistance of the water absorption member (70) can be suppressed.

[0110] The first welding part (75) fixes the first outer peripheral edge part (71b) of the first water absorption part (71) and the second outer peripheral edge part (72b) of the second water absorption part (72) to each other, and the second welding part (77) fixes the first inner peripheral edge part (71c) of the first water absorption part (71) and the second inner peripheral edge part (72c) of the second water absorption part (72) to each other.

[0111] In this configuration, both the outer peripheral edge part and the inner peripheral edge part of the water absorption member (70) are fixed by the welding parts (75, 77). Therefore, it is possible to suppress the first water absorption part (71) and the second water absorption part (72) from being bent in the thickness direction. As a result, it is possible to suppress an increase in the gap between the first water absorption part (71) and the second water absorption part (72). As a result, it is possible to suppress an increase in the thickness of the water absorption member (70) and a decrease in the humidifying ability of the water absorption member (70).

[0112] Since the water permeability of both the outer peripheral edge portion and the inner peripheral edge portion of the water absorption member (70) is low, it becomes easier to retain moisture inside the water absorption member (70).

[0113] (5-4) On the first upstream surface (81) of the first water absorption part (71), a concavo-convex shaped first upstream side concavo-convex part (91) is formed, and on the first downstream surface (82) of the first water absorption part (71), a concavo-convex shaped first downstream side concavo-convex part (92) is formed. On the second upstream surface (83) of the second water absorption part (72), a concavo-convex shaped second upstream side concavo-convex part (93) is formed, and on the second downstream surface (84) of the second water absorption part (72), a concavo-convex shaped second downstream side concavo-convex part (94) is formed.

[0114] In this configuration, the first upstream side concavo-convex part (91) and the second downstream side concavo-convex part (94) can expand the surface area of the upstream side surface and the downstream side surface of the water absorption member (70), and can improve the water diffusion effect on these surfaces. As a result, the humidifying ability of the water absorption member (70) can be improved.

[0115] In addition, the first downstream side concavo-convex part (92) and the second upstream side concavo-convex part (93) can expand the substantial surface area inside the water absorption member (70), and can improve the water diffusion effect inside the water absorption member (70). As a result, compared with a configuration in which only the thickness of one water absorption member (70) is increased, the humidifying ability of the water absorption member (70) can be improved.

[0116] (5-5) The shape of the first upstream side concavo-convex part (91) of the first water absorption part (71) is different from the shape of the second downstream side concavo-convex part (94) of the second water absorption part (72). The shape of the first downstream side concavo-convex part (92) of the first water absorption part (71) is different from the shape of the second upstream side concavo-convex part (93) of the second water absorption part (72).

[0117] With this configuration, the water diffusion characteristics due to the concavo-convex parts (91, 92) of the first water absorption part (71) can be made different from the water diffusion characteristics due to the concavo-convex parts (93, 94) of the second water absorption part (72). As a result, uneven distribution of water in the water absorption member (70) can be suppressed.

[0118] (5 - 6) The shape of the first upstream concavo - convex portion (91) of the first water absorption portion (71) is different from the shape of the first downstream concavo - convex portion (92) of the first water absorption portion (71). With this configuration, the water diffusion characteristics of the first upstream surface (81) of the first water absorption portion (71) can be made different from the water diffusion characteristics of the first downstream surface (82) of the first water absorption portion (71). As a result, uneven distribution of water in the water absorption member (70) can be suppressed.

[0119] The shape of the second upstream concavo - convex portion (93) of the second water absorption portion (72) is different from the shape of the second downstream concavo - convex portion (94) of the second water absorption portion (72). With this configuration, the water diffusion characteristics of the second upstream surface (83) of the second water absorption portion (72) can be made different from the water diffusion characteristics of the second downstream surface (84) of the second water absorption portion (72). As a result, uneven distribution of water in the water absorption member (70) can be suppressed.

[0120] (5 - 7) On the first upstream surface (81) of the first water absorption portion (71), a plurality of first convex portions (95a) extending along a direction orthogonal to the axial direction of the water absorption member (70) are formed. For this reason, the water in the first water absorption portion (71) can be guided in the extending direction of the first convex portions (95a), and the water diffusion effect is improved.

[0121] On the second upstream surface (83) of the second water absorption portion (72), a plurality of second convex portions (95b) extending along a direction orthogonal to the axial direction of the water absorption member (70) are formed. For this reason, the water in the second water absorption portion (72) can be guided in the extending direction of the second convex portions (95b), and the water diffusion effect is improved.

[0122] (5 - 8) The water absorption member (70) is configured such that the direction in which the plurality of first convex portions (95a) extend is different from the direction in which the plurality of second convex portions (95b) extend. For this reason, the direction in which water is guided by the plurality of first convex portions (95a) can be made different from the direction in which water is guided by the plurality of second convex portions (95b). As a result, the circumferential water diffusion effect in the water absorption member (70) is improved.

[0123] (5 - 9) The bucket (54) is configured to pour water into the first water absorption part (71). For this reason, it is possible to suppress the supplied water from scattering to the downstream side of the water absorption member (70) due to the air flow. As a result, the humidifying ability can be improved. The water supplied to the first water absorption part (71) also moves to the second water absorption part (72) along with the air flow. For this reason, water can be dispersed throughout the thickness direction of the water absorption member (70), and the humidifying ability of the water absorption member (70) can be improved.

[0124] (5-10) The diameter of the water absorption member (70) is 300 mm or less. Thereby, the diameter of the water absorption member (70) can be reduced. On the other hand, in the water absorption member (70), since the first water absorption part (71) and the second water absorption part (72) overlap in the air flow direction, even if the diameter of the water absorption member (70) is reduced, sufficient humidifying ability can be obtained with the water absorption member (70).

[0125] (6) Other embodiments Regarding the above embodiment, the following configuration may also be adopted.

[0126] The welding parts (75, 77) may weld the intermediate part in the radial direction of the first water absorption part (71) and the intermediate part in the radial direction of the second water absorption part (72).

[0127] In addition to the first water absorption part (71) constituting the upstream side part of the water absorption member (70) and the second water absorption part (72) constituting the downstream side part of the water absorption member (70), the water absorption member (70) may have a third water absorption part constituting the intermediate part in the axial direction of the water absorption member (70). The number of the third water absorption parts may be one or two or more. In this configuration, the welding parts (75, 77) may fix the first water absorption part (71), the second water absorption part (72), and the third water absorption part. In other words, the welding parts (75, 77) may be formed across the first water absorption part (71), the second water absorption part (72), and the third water absorption part.

[0128] The combination of the uneven portions of the water-absorbing member (70) is not limited to the above-described embodiment. In the water-absorbing member (70), a first honeycomb portion (96a) may be formed on the first upstream surface (81), a first convex portion (95a) may be formed on the first downstream surface (82), a second convex portion (95b) may be formed on the second upstream surface (83), and a second honeycomb portion (96b) may be formed on the second downstream surface (84). In this case, it is preferable that the direction in which the first convex portion (95a) extends is different from the direction in which the second convex portion (95b) extends. In this configuration, inside the water-absorbing member (70), the first convex portion (95a) and the second convex portion (95b) can diffuse water in the circumferential direction.

[0129] Alternatively, a first convex portion (95a) may be formed on the first upstream surface (81), a first honeycomb portion (96a) may be formed on the first downstream surface (82), a second honeycomb portion (96b) may be formed on the second upstream surface (83), and a second convex portion (95b) may be formed on the second downstream surface (84). In this case, it is preferable that the direction in which the first convex portion (95a) extends is different from the direction in which the second convex portion (95b) extends.

[0130] Uneven portions having a predetermined shape may be formed on any one, two, or three of the first upstream surface (81), the first downstream surface (82), the second upstream surface (83), and the second downstream surface (84).

[0131] The shapes of the uneven portions of the first upstream surface (81) and the first downstream surface (82) may be the same, or the shapes of the uneven portions of the second upstream surface (83) and the second downstream surface (84) may be the same.

[0132] The shape of the uneven portion is not limited to the above embodiment. For example, when viewed in the axial direction, the uneven portion may be lattice-shaped or mesh-shaped. The lattice-shaped uneven portion may form a plurality of concave portions such as a quadrilateral or a pentagon. The uneven portion may be a dot pattern.

[0133] The first convex portion (95a) and the second convex portion (95b) do not have to extend linearly and may be curved. The first convex portion (95a) and the second convex portion (95b) may extend radially from the axial center side toward the outer peripheral side.

[0134] The extending directions of the first convex portion (95a) and the second convex portion (95b) may be the same. In this case, it becomes easier to guide the water of the water absorption member (70) in a desired direction.

[0135] The humidifying rotor (50) may not have a bucket (54). In this case, a part of the water absorption member (70) is immersed in the water in the water tray (43) which is a water storage part, and thus water is supplied to the water absorption member (70).

[0136] The water storage part does not necessarily have to be a tray, and it may be a tank or a container.

[0137] The humidifying device may be applied to an air conditioner. The humidifying device may be installed inside a duct having an air passage through which air flows.

[0138] The water absorption member (70) does not necessarily have to be a non-woven fabric, and it may be a resin material that absorbs moisture.

[0139] Although the embodiments and modification examples have been described above, it will be understood that various changes in form and details are possible without departing from the spirit and scope of the claims. Also, the above embodiments, modification examples, and other embodiments may be combined or replaced as appropriate as long as the functions of the object of the present disclosure are not impaired.

[0140] The descriptions such as "first", "second", "third",... described above are used to distinguish the phrases to which these descriptions are given, and do not limit even the number and order of those phrases.

Industrial Applicability

[0141] As described above, the present disclosure is useful for a humidifying device.

Explanation of Signs

[0142] 10 Air cleaner (humidifying device) 43 Water tray (water storage part) 44 Rotating shaft 45 Driving mechanism 51 Frame body 54 Bucket (water intake part) 70 Water absorption member 71 First water absorption part 71c First inner peripheral edge part 72 Second water absorption part 72c Second inner peripheral edge part 73a First hole 73b Second hole 75 First welding part 77 Second welding part 91 First upstream uneven part 92 First downstream uneven part 93 Second upstream uneven part 94 Second downstream uneven part 95a First convex part 95b Second convex part P Air passage

Claims

1. a water absorbing member (70) that adds moisture to air flowing through the air passage (P); a drive mechanism (45) that rotates the water absorbing member (70) about an axis aligned along the air flow direction of the air passage (P); a water storage section (43) for storing water to be supplied to the water absorption member (70), The water absorbing member (70) a first water absorption section (71) constituting an upstream portion of the water absorption member (70); a second water absorption section (72) which constitutes a downstream portion of the water absorption member (70) and is disposed so as to overlap the first water absorption section (71); a welded portion (75, 77) that fixes the first water absorption portion (71) and the second water absorption portion (72) to each other; have humidifier.

2. The welded portions (75, 77) include a first welded portion (75) which fixes an outer peripheral edge portion of the first water absorption portion (71) and an outer peripheral edge portion of the second water absorption portion (72) to each other. The humidification device according to claim 1.

3. a rotating shaft (44) provided at the axis of the water absorbing member (70), the first water absorption portion (71) has a first inner circumferential edge portion (71c) that defines a first hole (73a) through which the rotating shaft (44) passes, the second water absorption portion (72) has a second inner circumferential edge portion (72c) that defines a second hole (73b) through which the rotating shaft (44) passes; The welded portions (75, 77) include a second welded portion (77) which fixes a first inner peripheral edge portion (71c) of the first water absorption portion (71) and a second inner peripheral edge portion (72c) of the second water absorption portion (72) to each other. The humidifier according to claim 2.

4. The first water absorption section (71) has an upstream surface and a downstream surface on which uneven portions (91, 92) having an uneven shape are formed, The second water absorption section (72) has an upstream surface and a downstream surface on which uneven portions (93, 94) having an uneven shape are formed. The humidifier according to any one of claims 1 to 3.

5. The shape of the projections and recesses (91, 92) of the first water absorption section (71) and the shape of the projections and recesses (93, 94) of the second water absorption section (72) are different from each other. The humidifier according to claim 4.

6. the shape of the uneven portion (91) on the upstream surface of the first water absorption section (71) is different from the shape of the uneven portion (92) on the downstream surface of the first water absorption section (71); and / or the shape of the uneven portion (91) on the upstream surface of the second water absorption section (72) is different from the shape of the uneven portion (92) on the downstream surface of the second water absorption section (72); The humidifier according to claim 4.

7. a plurality of first protrusions (95a) extending in a direction perpendicular to the axial direction of the water absorbent member (70) are formed on at least one of the upstream surface and the downstream surface of the first water absorption portion (71); At least one of the upstream surface and the downstream surface of the second water absorption portion (72) is formed with a plurality of second protrusions (95b) extending in a direction perpendicular to the axial direction of the water absorption member (70). The humidifier according to claim 4.

8. The water absorbent member (70) is configured such that the extending direction of the first protrusions (95a) is different from the extending direction of the second protrusions (95b). The humidifier according to claim 7.

9. a frame (51) that is rotationally driven by the drive mechanism (45) and that holds the water absorbing member (70) therein The humidifier according to any one of claims 1 to 3.

10. The frame (51) is provided with a pumping section (54) for pumping up water from the water storage section (43) and pouring the pumped water into the water absorption member (70). The humidification device according to claim 9.

11. The pumping section (54) is configured to pump water into the first water intake section (71). The humidification device according to claim 10.

12. The diameter of the water absorbent member (70) is 300 mm or less. The humidifier according to any one of claims 1 to 3.

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