Humidifier

Abstract

To restrain unusual noise in a humidifying device.SOLUTION: A rotary frame (45), a water absorbing member (70), and a water storage part (33) for storing water are provided. The rotary frame (45) comprises a water supply member (80) for supplying the water in the water storage part (33) to the water absorbing member (70). The water supply member (80) is arranged at a peripheral edge of the rotary frame (45), a water reservoir part (S) for reserving the water is formed, and the water in the water reservoir part (S) is supplied to the water absorbing member (70) at a predetermined rotation position of the rotary frame (45). When the rotary frame (45) rotates and the water supply member (80) reaches a lowermost end position, at least a portion of the water reservoir part (S) is located above a water surface in the water storage part (33).SELECTED DRAWING: Figure 14

Description

[Technical Field]

[0001] The present disclosure relates to a humidification device. [Background technology]

[0002] Patent Document 1 discloses a humidifier that humidifies air. The humidifier includes a water storage section and a humidifying mechanism having a rotating frame. The humidifying mechanism includes a rotating frame and a water-absorbing member held inside the rotating frame. When the drive mechanism rotates the rotating frame, the water-pumping upper part of the rotating frame moves through the water in the water storage section below the rotating frame. As a result, water enters the inside of the water-pumping upper part. When this water-pumping upper part moves to the upper side of the rotating frame, the water inside the water-pumping upper part is supplied to the water-absorbing member through the spout. As air passes through the water-absorbing member in the axial direction of the rotating frame, water from the water-absorbing member is added to the air. The air humidified in this manner is supplied to the target space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-20627 Summary of the Invention [Problem to be solved by the invention]

[0004] The humidifying mechanism of Patent Document 1 is likely to entrain air inside the upper water scoop when it takes in water. If such air entrainment occurs, it is possible that a sound (hereinafter referred to as "abnormal noise" for the sake of convenience) will be generated as the air inside the upper water scoop is expelled into the water as the rotating frame rotates.

[0005] The present disclosure aims to suppress abnormal noise in a humidifier. [Means for solving the problem]

[0006] A first aspect of the present disclosure includes a rotary frame (45) that is rotated by a drive mechanism (41), a water absorption member (70) that is held by the rotary frame (45), and a water storage section (33) that stores water to be supplied to the water absorption member (70), The rotary frame (45) has a water supply member (80) for supplying water in the water storage section (33) to the water absorption member (70), The water supply member (80) Located on the periphery of the rotary frame (45), A water reservoir area (S) is formed, supplying water from the water pool area (S) to the water absorbing member (70) at a predetermined rotational position of the rotary frame (45); When the rotary frame (45) rotates and the water supply member (80) reaches the lowest position, at least a part of the water pooling area (S) is located above the water surface in the water storage section (33). It is a humidifier.

[0007] In the first aspect, independent bubbles are less likely to form in the water pool area (S) while water is being pumped up. In this aspect, it is possible to suppress abnormal noise in the humidifier.

[0008] A second aspect of the present disclosure provides the humidifier of the first aspect, The water level is the water level when the water level in the water storage section (33) is at its highest. It is a humidifier.

[0009] In the second aspect, bubbles are unlikely to form in the water pool area (S) regardless of the water level during use of the humidifier. In this aspect, the effect of suppressing abnormal noise is always ensured during use of the humidifier.

[0010] A third aspect of the present disclosure is the humidifier of the first or second aspect, a water intake (57) that is immersed in water in the water storage section (33) at a predetermined rotation position of the rotary frame (45); The water intake (57) continues to introduce water from the water reservoir (33) into the water pooling area (S) even when the water supply member (80) rotates a predetermined distance from the lowest position. It is a humidifier.

[0011] In the third embodiment, water can be reliably introduced into the water reservoir region (S).

[0012] A fourth aspect of the present disclosure provides the humidifier of the third aspect, The rotary frame (45) has a side surface (52b) that is perpendicular to or intersects with the rotation axis (X), The water inlet (57) is formed on the side surface (52b). It is a humidifier.

[0013] In the fourth aspect, the outer peripheral surface of the rotary frame (45) can be free from holes for water absorption, for example. This aspect can prevent air from leaking out from the outer peripheral surface of the rotary frame (45). In other words, this aspect improves the efficiency of humidification.

[0014] A fifth aspect of the present disclosure is a humidifier according to any one of the first to fourth aspects, The water reservoir area (S) is a space extending in the rotation direction of the rotary frame (45). It is a humidifier. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view showing the appearance of an air purifier according to an embodiment. [Figure 2] FIG. 2 is a schematic diagram showing the inside of the air purifier. [Figure 3] FIG. 3 is a perspective view showing the overall configuration of the humidifying unit. [Figure 4] FIG. 4 is an exploded perspective view of the humidification rotor. [Figure 5] FIG. 5 is an exploded perspective view of the first frame. [Figure 6] FIG. 6 is a side view of the humidification rotor as viewed from the first frame side. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] FIG. 8 is a side view of the first frame as seen from the water absorbing member side. [Figure 9] FIG. 9 is an enlarged perspective view of the portion surrounded by the dashed line in B2 of FIG. [Figure 10] FIG. 10 is an enlarged side view of the part surrounded by the dashed line in B2 of FIG. [Figure 11] FIG. 11 is a cross-sectional view taken along line XI-XI in FIG. [Figure 12] FIG. 12 is an enlarged cross-sectional view of the portion surrounded by the dashed line B3 in FIG. [Figure 13] FIG. 13 is an enlarged perspective view of the area surrounded by B1 in FIG. 4, as viewed from the water-absorbing member side. [Figure 14] FIG. 14 is a diagram illustrating the positional relationship between the bucket and the water surface in the water tray. DETAILED DESCRIPTION OF THE INVENTION

[0016] <<Embodiment>> 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 within the scope of the technical concept of the present disclosure. Since the drawings are intended to conceptually explain the present disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary to facilitate understanding.

[0017] (1) Overall configuration of the humidifier The overall configuration of the humidifier will be described with reference to Figures 1 and 2. In the following description, terms such as "upper," "lower," "front," "rear," "right," and "left" generally refer to the directions indicated by the arrows in Figure 1.

[0018] The humidifying device of this embodiment constitutes an air purifier (10) that purifies air. The air purifier (10) humidifies the air in a target space. In addition, the air purifier (10) purifies the air in the target space. The air purifier (10) has a casing (11) and a plurality of components housed in an air passage (P) inside the casing (11). The plurality of components include, in order along the air flow, a prefilter (21), a fan (22), a discharge unit (23), a UV irradiation unit (24), a HEPA filter (25), a deodorizing filter (26), and a humidification unit (30).

[0019] (1-1) Casing As shown in Fig. 1, the casing (11) is formed in the shape of a hollow box. The casing (11) is formed in the shape of a vertically long rectangular parallelepiped. 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).

[0020] An air outlet (12) is formed in the top plate (11a). The air outlet (12) is rectangular and located slightly rearward of the top plate (11a). Two flaps (13) are provided in the air outlet (12). The flaps (13) are plate-shaped and extend from the left to the right ends of the air outlet (12). The flaps (13) open and close the air outlet (12) and adjust the direction of the air blown out.

[0021] An operation panel (14) is provided on the top plate (11a). The operation panel (14) is located toward the front of the top plate (11a). A user can operate the operation panel (14) to input an operation mode and various settings of the air purifier (10).

[0022] A first suction port (15) is formed at the lower end of the front plate (11c) and extends horizontally from the left to the right ends of the casing (11).

[0023] A second suction port (16) is formed in the right side plate (11e). The second suction port (16) is rectangular and is formed in the lower part of the right side plate (11e). An openable lid (17) is provided in the upper part of the right side plate (11e). The openable lid (17) opens and closes an access opening (18) of the water tank (32) of the humidification unit (30). The openable lid (17) is configured to tilt to the right with its lower part as a fulcrum. A drawer opening (19) is formed in the upper part of the openable lid (17). A user places their hand on the drawer opening (19) and pulls out the upper part of the openable lid (17) to the right (toward the user). This tilts the upper part of the openable lid (17) to the right, opening the access opening (18). This allows the user to remove the water tank (32) from the casing (11) through the access opening (18).

[0024] The left side plate (11f) is formed with a third suction port (20). The third suction port (20) is rectangular and is formed in the lower part of the left side plate (11f).

[0025] An air passage (P) is formed inside the casing (11). The first air inlet (15), the second air inlet (16), and the third air inlet (20) form an inlet end of the air passage (P). The air outlet (12) forms an outlet end of the air passage (P).

[0026] (1-2) Pre-filter As shown in Fig. 2, two prefilters (21) are provided inside the casing (11). One of the prefilters (21) is disposed on the far side of the second suction port (16), and the other prefilter (21) is disposed on the far side of the third suction port (20). The prefilters (21) capture relatively small amounts of dust in the air.

[0027] (1-3) Fans The fan (22) is disposed at the bottom of the air passage (P). The fan (22) transports air through the air passage (P). The fan (22) is a centrifugal fan, specifically a sirocco fan. The fan (22) is a double-suction fan, with suction ports formed at both axial ends of its drive shaft. The blowout port of the fan (22) faces upward. The fan (22) has a fan motor (22a) that drives an impeller. The fan motor (22a) is disposed closer to the left side panel (11f). When the fan (22) is operated, air from the target space is drawn into the air passage (P) through the first suction port (15), the second suction port (16), and the third suction port (20). The air flowing through the air passage (P) is blown out into the target space through the blowout port (12).

[0028] (1-4) Discharge unit The discharge unit (23) is disposed between the fan (22) and the HEPA filter (25). The discharge unit (23) is disposed in the air passage (P) near the left side plate (11f). The discharge unit (23) generates active species for oxidative decomposition of air through discharge. The discharge unit (23) generates a discharge between the tip of a linear discharge electrode and the flat surface of a plate-shaped counter electrode. The discharge unit (23) generates a streamer discharge that forms a substantially conical discharge region from the tip of the discharge electrode toward the counter electrode.

[0029] (1-5) UV irradiation unit The UV irradiation unit (24) is disposed between the fan (22) and the HEPA filter (25). The UV irradiation unit (24) is disposed near the left side panel (11f) in the air passage (P). The UV irradiation unit (24) sterilizes viruses and bacteria in the air or on the surface of target components by emitting ultraviolet rays. The UV irradiation unit (24) has an LED that emits ultraviolet rays and a control circuit that controls the LED (not shown). The peak wavelength of the ultraviolet rays emitted by the LED is 255 nm or more and 275 nm or less. The LED irradiates the ultraviolet rays toward the HEPA filter (25). Therefore, the HEPA filter (25) can be sterilized by the ultraviolet rays.

[0030] (1-6) HEPA filter The HEPA filter (25) (High Efficiency Particulate Air Filter) is disposed between the UV irradiation unit (24) and the deodorizing filter (26). The HEPA filter (25) is formed in a plate shape with its thickness direction corresponding to the vertical direction. The HEPA filter (25) has an electrostatic function of capturing particles by electrostatic force. An antibacterial agent is added to the HEPA filter (25). The HEPA filter (25) may have a laminated structure in which two or more filter materials are stacked in the air passage direction.

[0031] (1-7) Deodorizing filter The deodorizing filter (26) is disposed between the HEPA filter (25) and the humidification unit (30). The deodorizing filter (26) is formed in a plate shape with its thickness direction corresponding to the vertical direction. The deodorizing filter (26) is an adsorption part that adsorbs harmful substances and odorous substances in the air. The deodorizing filter (26) has a base material through which air can pass and an adsorbent material such as activated carbon supported on the base material.

[0032] (1-8) Humidification unit The humidifying unit (30) is disposed between the deodorizing filter (26) and the air outlet (12). The humidifying unit (30) is disposed in a humidifying space (31) located in an upper portion of the air passage (P). The humidifying unit (30) adds water to the air flowing through the air passage (P). The humidifying unit (30) includes a tank (32), a water tray (33), and a humidifying mechanism (40).

[0033] The tank (32) is a container for storing water for humidification. The tank (32) appropriately supplies the water therein to the water tray (33). The tank (32) is configured to be able to be inserted into and removed from the casing (11) through the access opening (18).

[0034] The water tray (33) stores the water supplied from the tank (32). The water tray (33) constitutes a water storage section for supplying water to the water absorbing member (70) of the humidification mechanism (40). The water tray (33) is a container with an open top.

[0035] (2) Overall configuration of the humidification mechanism The humidification mechanism (40) humidifies air flowing through the air passage (P). The humidification mechanism (40) includes a drive mechanism (41), a drive shaft (42) driven by the drive mechanism (41), a shaft support (43) that supports the drive shaft (42), and a humidification rotor (44) connected to the drive shaft (42). The humidification rotor (44) divides the humidification space (31) into a primary space (31a) and a secondary space (31b). The primary space (31a) is formed upstream of the humidification rotor (44). The secondary space (31b) is formed downstream of the humidification rotor (44).

[0036] As shown in Fig. 2, the drive mechanism (41) is disposed in the primary space (31a). In this embodiment, the drive mechanism (41) is formed by a motor. The drive shaft (42) extends horizontally to the right from the drive mechanism (41). The drive shaft (42) is connected to the central axis of the rotation frame (45) of the humidification rotor (44).

[0037] The humidification mechanism (40) of this embodiment is provided with two shaft supports (43). One of these shaft supports (43) is located in the primary space (31a), and the other is located in the secondary space (31b). Each shaft support (43) rotatably supports a drive shaft (42) at its upper end. The shaft supports (43) of this embodiment are formed integrally with the water tray (33).

[0038] (3) Humidification rotor The configuration of the humidification rotor (44) will be described with reference to Figures 2 to 13. In the following description, the terms "axial direction," "radial direction," and "circumferential direction" generally refer to the axial direction, radial direction, and circumferential direction, respectively, of the rotary frame (45). The "axial direction" refers to the direction in which the rotary axis (X), which is the center of rotation of the rotary frame (45) shown in Figure 3, extends.

[0039] The humidification rotor (44) imparts water contained in the water-absorbing member (70) to the air in the humidification space (31). The humidification rotor (44) has a rotary frame (45) rotated by the drive mechanism (41) and a water-absorbing member (70) held in the rotary frame (45). The rotary frame (45) is made of a resin material. As shown in FIGS. 3 and 4, the rotary frame (45) has a first frame (50) and a second frame (60). The water-absorbing member (70) is held inside the rotary frame (45) by being sandwiched between the first frame (50) and the second frame (60).

[0040] The rotary frame (45) is provided with a bucket (80) for drawing up water from the water tray (33) and a spout (92) for supplying the water in the bucket (80) to the water-absorbing member (70). The bucket (80) is configured to move alternately as the rotary frame (45) rotates between a first position where it is immersed in the water inside the water tray (33) and a second position where the water in the bucket (80) is supplied to the water-absorbing member (70) through the spout (92).

[0041] (3-1) First slot The first frame (50) is located on the upstream side of the air passage (P) of the rotary frame (45). The first frame (50) is located on the primary space (31a) side. The first frame (50) has a first boss portion (51) to which the drive shaft (42) is fixed, an annular first frame body (52), and a plurality of first ribs (53) connecting the first boss portion (51) and the first frame body (52).

[0042] The first boss portion (51) is located at the center of the rotary frame (45). The first ribs (53) extend radially outward from the first boss portion (51) toward the first frame body (52). The first ribs (53) are arranged at equal intervals in the circumferential direction.

[0043] The first frame body (52) is formed in an annular shape coaxial with the rotation axis (X) of the rotary frame (45). The first frame (50) is provided with a plurality of buckets (80) and guide portions (90) corresponding to each bucket (80). The guide portions (90) are formed with spouts (92). The first frame body (52) has a base portion (52a) in the shape of an annular plate. The thickness direction of the base portion (52a) corresponds to the axial direction.

[0044] As shown in FIG. 5, the first frame body (52) is composed of a first part (C1) and a plurality of second parts (C2) that are configured separately from the first part (C1). The first part (C1) and each of the second parts (C2) are resin-molded products made of different parts. The first part (C1) and each of the second parts (C2) are manufactured by injection molding in a mold. The first part (C1) is the portion of the first frame body (52) excluding the second part (C2). The first frame body (52) is configured by attaching each of the second parts (C2) to the first part (C1).

[0045] The plurality of buckets 80 include first buckets 80A attached to the first component C1 and second buckets 80B each formed of the second component C2. The rotary frame 45 of this embodiment is provided with six first buckets 80A and six second buckets 80B. While these numbers are merely exemplary, it is preferable that the number of first buckets 80A and the number of second buckets 80B are the same. It is preferable that the first buckets 80A and the second buckets 80B are alternately arranged in the circumferential direction of the rotary frame 45.

[0046] First claws 56 are provided on the surface of the second bucket 80B facing the first component C1. As shown in Fig. 6, first holes 54 into which the first claws 56 engage are formed in the base 52a. The first claws 56 are caught in the first holes 54, thereby fixing the second buckets 80B to the first component C1.

[0047] A plurality of second holes (55) are formed in the base portion (52a). The second holes (55) communicate with some of the plurality of first holes (54). In other words, the first holes (54) and the second holes (55) are integrally formed in the first frame body (52). The second claws (65) of the second frame (60) are caught in the second holes (55).

[0048] (3-2) Second slot The second frame (60) is located on the downstream side of the air passage (P) of the rotary frame (45). The second frame (60) is located on the secondary space (31b) side. The second frame (60) has a second boss portion (61) to which the drive shaft (42) is fixed, an annular second frame body (62), and a plurality of second ribs (63) connecting the second boss portion (61) and the second frame body (62).

[0049] The second boss portion (61) is located at the center of the rotary frame (45). The second ribs (63) extend radially outward from the second boss portion (61) toward the second frame main body (62). The second ribs (63) are arranged at equal intervals in the circumferential direction.

[0050] The second frame body (62) is formed in an annular shape coaxial with the rotation axis (X) of the rotary frame (45).

[0051] As shown in FIG. 4 , the second frame 60 is provided with a plurality of pressure plates 64. In this embodiment, the second frame 60 is provided with 12 pressure plates 64, but this number is merely an example. The pressure plates 64 are formed in a plate shape that protrudes from the second frame body 62 toward the first frame 50. The pressure plates 64 are arranged at equal intervals in the circumferential direction. The pressure plates 64 include first pressure plates 64A that are provided with second claws 65 and second pressure plates 64B that do not have second claws 65. The first pressure plates 64A and second pressure plates 64B are arranged alternately in the circumferential direction. The second claws 65 of the first pressure plates 64A are hooked into the first holes 54 formed in the first frame body 52. This fixes the first frame (50) and the second frame (60) to each other.

[0052] The second frame (60) is provided with a plurality of holding portions (66). In this embodiment, the second frame (60) is provided with 12 holding portions (66), but this number is merely an example. The plurality of holding portions (66) are provided on the inner edge of the second frame body (62). The plurality of holding portions (66) are arranged at equal intervals in the circumferential direction. The holding portions (66) constitute members for fixing the water-absorbing member (70) inside the rotary frame (45).

[0053] (3-3) Water-absorbing material The water-absorbing member (70) is formed in a disk shape coaxial with the rotation axis (X) of the rotary frame (45). The thickness direction of the water-absorbing member (70) corresponds to the axial direction or the air flow direction. The water-absorbing member (70) is made of a water-absorbing resin material. The water-absorbing member (70) has a disk portion (71) and a flange portion (72) extending radially outward from the outer peripheral surface of the disk portion (71). A shaft opening (73) through which the drive shaft (42) passes is formed in the center of the disk portion (71).

[0054] 7, a first ventilation surface (74) is formed at one axial end of the water absorption member (70), and a second ventilation surface (75) is formed at the other axial end of the water absorption member (70). The first ventilation surface (74) corresponds to the surface of the water absorption member (70) that is on the upstream side of the air flow. The second ventilation surface (75) corresponds to the surface of the water absorption member (70) that is on the downstream side of the air flow.

[0055] A welded portion (76) is formed on the outer peripheral surface of the disk portion (71) of the water-absorbent member (70). The welded portion (76) is formed around the entire outer peripheral surface of the water-absorbent member (70). The welded portion (76) is formed by melting a water-absorbing material and then solidifying the material. On the other hand, the welded portion (76) is not formed on the first ventilation surface (74) or the second ventilation surface (75) of the water-absorbent member (70). Therefore, the first ventilation surface (74) and the second ventilation surface (75) of the water-absorbent member (70) have higher air and water permeability than the outer peripheral surface of the water-absorbent member (70).

[0056] As shown in FIGS. 4 and 7, a pair of grooves (77, 78) is formed in the outer edge of the disk portion (71) of the water-absorbing member (70) so as to sandwich the flange portion (72). In other words, the pair of grooves (77, 78) is composed of a first groove (77) on the first ventilation surface (74) side and a second groove (78) on the second ventilation surface (75) side. The pair of grooves (77, 78) is formed in a concave shape recessed radially inward from the outer edge of the disk portion (71). Six pairs of grooves (77, 78) are provided in the disk portion (71) at equal intervals in the circumferential direction. The number of pairs of grooves (77, 78) is merely an example. An insertion hole (79) extending in the axial direction is formed in the disk portion (71) so as to connect the pairs of grooves (77, 78) to each other. One insertion hole (79) is provided for each pair of grooves (77, 78). The pair of grooves (77, 78) is located radially inward of the welded portion (76).

[0057] (3-4) Detailed configuration of buckets The bucket (80) shown in FIGS. 8 to 12 constitutes a water container having an opening (80a). A water pooling area (S) is formed inside the bucket (80) as a space for pooling water inside the bucket (80). The opening (80a) of the bucket (80) faces the rotation direction of the rotary frame (45). The water pooling area (S) is closed by the bucket (80) in all directions other than the rotation direction. In other words, the bucket (80) is formed in a cylindrical shape with a bottom, with one end facing the rotation direction being open and the other end opposite to the rotation direction being closed. The bucket (80) of this embodiment extends in the circumferential direction of the rotary frame (45).

[0058] The bucket (80) has a first plate portion (81), a second plate portion (82), a third plate portion (83), and a fourth plate portion (84). The first plate portion (81) is located radially outward from the bucket (80). The second plate portion (82) is located radially inward from the bucket (80). The third plate portion (83) is located on the axial side of the water absorption member (70). The fourth plate portion (84) is located on the axial side opposite the water absorption member (70). The fourth plate portion (84) is formed by a part of the base portion (52a) of the first frame body (52).

[0059] The third plate portion (83) has a first wall (83a), a second wall (83b), and a third wall (83c). The first wall (83a) is formed on the radially outer side of the third plate portion (83), and the second wall (83b) is formed on the radially inner side of the third plate portion (83). The first wall (83a) is located farther from the fourth plate portion (84) in the axial direction than the third wall (83c). The third wall (83c) is continuous with a radially inner end of the second wall (83b) and a radially inner end of the first wall (83a).

[0060] When viewed in a cross section passing through the rotation axis (X), the first plate portion (81) and the second plate portion (82) extend in the axial direction, and the fourth plate portion (84) extends in the radial direction. When viewed in a cross section passing through the rotation axis (X), the first wall (83a) and the second wall (83b) extend in the radial direction. When viewed in a cross section passing through the rotation axis (X), the third wall (83c) is inclined so as to approach the rotation axis (X) as it moves away from the water-absorbing member (70). Strictly speaking, the term "cross section passing through the rotation axis (X)" refers to a cross section on an imaginary plane that passes through the rotation axis (X) and extends in the same direction as the rotation axis (X).

[0061] The water pooling region (S) is formed inside the first plate portion (81), the second plate portion (82), the third plate portion (83), and the fourth plate portion (84). The water pooling region (S) includes a first space (S1) and a second space (S2). The first space (S1) and the second space (S2) are formed across both ends of the bucket (80) in the rotational direction. In other words, the first space (S1) and the second space (S2) are formed from the closing portion on the opposite side of the bucket (80) in the rotational direction to the opening (80a). The first space (S1) is formed on the left side of the boundary line (B) in FIG. 11. The first space (S1) is formed between the first plate portion (81) and the second plate portion (82). The second space (S2) is formed on the right side of the boundary line (B). The second space (S2) is formed between the first plate portion (81) and the third wall (83c).

[0062] The second space (S2) protrudes from the first space (S1) in the axial direction. In other words, the second space (S2) increases the axial width of the water pooling region (S). Specifically, the second space (S2) protrudes from the radially outer portion of the first space (S1) toward the water absorption member (70) in the axial direction. The water absorption member (70) is disposed radially inward of the second space (S2). The second space (S2) overlaps with the water absorption member (70) in the radial direction. The first space (S1) overlaps with the water absorption member (70) in the axial direction. This configuration increases the volume of the water pooling region (S). In addition, it is possible to prevent the rotary frame (45) from becoming larger in the radial direction. In addition, it is possible to prevent the rotary frame (45) from becoming larger in the axial direction.

[0063] 10, the second plate portion (82) is inclined so as to approach the rotation axis (X) in the direction of rotation. Strictly speaking, the inner surface of the second plate portion (82) on the side of the first space (S1) is inclined so as to approach the rotation axis (X) in the direction of rotation. This makes it easier to guide water from the water pooling region (S) to the opening (80a) of the bucket (80) when the bucket (80) moves upward of the rotary frame (45).

[0064] As shown in Fig. 11, the third wall (83c) is inclined so as to approach the rotation axis (X) toward the first space (S1). Strictly speaking, a first surface (85) of the third wall (83c) on the second space (S2) side is inclined so as to approach the rotation axis (X) toward the first space (S1). The first surface (85) constitutes the radially inner surface of the second space (S2) among the inner surfaces of the bucket (80) that form the second space (S2). Therefore, when the bucket (80) moves upward in the rotary frame (45), water in the second space (S2) is more easily guided to the first space (S1).

[0065] (3-5) Detailed structure of the guide section The guide portion (90) shown in Figures 9, 10, and 12 guides water flowing out from the opening (80a) of the bucket (80) to the water-absorbing member (70). The guide portion (90) is provided on the rotary frame (45) so as to be adjacent to the opening (80a) of the bucket (80) in the direction of rotation. The guide portion (90) is located radially inward of the opening (80a) of the bucket (80).

[0066] The guide portion (90) has a recess (91) recessed radially inward. A spout (92) is formed inside the recess (91). As shown in FIG. 12 , the spout (92) opens toward the water-absorbent member (70). Specifically, the spout (92) opens toward the first ventilation surface (74) of the water-absorbent member (70). The first ventilation surface (74) is the surface of the water-absorbent member (70) on the axial end side.

[0067] By arranging the spout (92) to open toward the first ventilation surface (74) of the water-absorbent member (70), the water in the bucket (80) is more likely to come into contact with the air passing through the water-absorbent member (70), thereby improving the humidifying capacity of the water-absorbent member (70).

[0068] In particular, in the water-absorbent member (70) of this embodiment, a welded portion (76) is formed on the outer peripheral surface of the disk portion (71) that is the main body of the water-absorbent member (70). If the spout (92) were to open toward the outer peripheral surface of the water-absorbent member (70), the welded portion (76) would prevent water flowing out of the spout (92) from moving into the water-absorbent member (70). In contrast, by opening the spout (92) toward the first ventilation surface (74), the welded portion (76) can be prevented from interfering with the movement of water into the water-absorbent member (70).

[0069] Furthermore, the spout (92) of this embodiment opens toward the first groove (77) on the first ventilation surface (74) side of the water-absorbent member (70). The spout (92) and the first groove (77) face each other in the axial direction. This makes it easier for some of the water that passes through the spout (92) to enter the water-absorbent member (70) through the first groove (77).

[0070] The recess (91) has a first side wall (93), a second side wall (94), and a bottom wall (95). The first side wall (93) is continuous with the inner edge of the opening (80a) of the bucket (80). The second wall (83b) faces the first side wall (93). The first wall (83a) and the second wall (83b) extend radially when viewed in the axial direction. The bottom wall (95) extends circumferentially from the radially inner end of the first side wall (93) to the radially inner end of the second side wall (94).

[0071] As shown in FIG. 10 , the inner surface of the recess (91) includes a pair of side surfaces (96) facing each other in the circumferential direction of the rotary frame (45), a bottom surface (97) formed radially inward, and arc-shaped arc surfaces (98) formed between the bottom surface (97) and each side surface (96). One of the pair of side surfaces (96) is the inner surface of the first side wall (93), and the other is the inner surface of the second side wall (94). The bottom surface (97) is formed on the inner surface of the bottom wall (95). Furthermore, the pair of side surfaces (96) corresponds to the fourth surface in this disclosure. The bottom surface (97) corresponds to the fifth surface and guide surface in this disclosure. The arc surfaces (98) correspond to the sixth surface in this disclosure.

[0072] Water tends to remain in the corners between the first side walls 93 and the bottom wall 95 due to surface tension. However, by forming the arcuate surfaces 98 at the corners, the surface tension can be reduced. As a result, water can be prevented from remaining in the corners between the first side walls 93 and the bottom wall 95.

[0073] The radius of curvature R1 of the arcuate surface 98 is preferably larger than the thickness of the walls forming the recess 91. Specifically, the radius of curvature R1 is preferably larger than the thickness of each of the first side wall 93, the second side wall 94, and the bottom wall 95. This further prevents water from remaining in the corners.

[0074] As shown in FIG. 12, the bottom surface (97), which is the guide surface of the recess (91), has a second surface (97a) and a third surface (97b). The second surface (97a) is located on the far side of the spout (92). The third surface (97b) is formed from the axial end of the second surface (97a) to the spout (92). The second surface (97a) is inclined so as to approach the rotation axis (X) as it approaches the spout (92). The third surface (97b) extends in the axial direction toward the spout (92).

[0075] The second surface (97a) is inclined, which prevents water from remaining at the back of the spout (92). The third surface (97b) extends in the axial direction, which prevents water from sliding down the second surface (97a) and flowing downward. In other words, water is guided by the third surface (97b) and supplied to the water-absorbent member (70) so as to be perpendicular to the first ventilation surface (74) of the water-absorbent member (70). This makes it easier for water to reach the interior of the water-absorbent member (70).

[0076] When viewed from a cross section passing through the rotation axis (X), the length of the second surface (97a) is L2, and the length of the third surface (97b) is L3. In this case, L3 is preferably smaller than L2. If L3 is too long, water may remain on the bottom surface (97) due to surface tension on the third surface (97b). L3 is preferably equal to or smaller than 1 / 2 of L2, and more preferably equal to or smaller than 1 / 3 of L2. This further reduces the amount of water remaining on the bottom surface (97) of the guide portion (90).

[0077] As shown in FIGS. 9 and 10 , the guide portion (90) has a guide plate (99). The guide plate (99) is disposed radially opposite the opening (80a) of the bucket (80) across the spout (92). The guide plate (99) has a flat surface (99a) that faces the opening (80a) of the bucket (80). The flat surface (99a) of the guide plate (99) faces the opposite side of the rotational direction. The flat surface of the guide plate (99) is located radially outward of the second wall (83b) and further back in the rotational direction. Water flowing out from the opening (80a) of the bucket (80) collides with the flat surface (99a) of the guide plate (99). The colliding water changes direction from the radial direction to the axial direction and is guided to the spout (92).

[0078] (3-6) Detailed structure of the holding part 12 and 13, the second frame 60 is provided with a holding portion 66. The holding portion 66 is provided to correspond to each spout 92. The holding portion 66 has a water shielding wall 66a, a fixing pin 66b protruding from the water shielding wall 66a toward the water absorbent member 70, and a fixing wall 66c surrounding the fixing pin 66b.

[0079] The water impermeable wall (66a) is located on the axially opposite side of the spout (92) across the water-absorbent member (70). The water impermeable wall (66a) faces the spout (92) via the water-absorbent member (70). The water impermeable wall (66a) and the water-absorbent member (70) overlap in the axial direction. The surface area of ​​the water impermeable wall (66a) facing the spout (92) is larger than the opening area of ​​the spout (92). The water impermeable wall (66a) prevents water supplied from the spout (92) toward the water-absorbent member (70) from passing through the water-absorbent member (70). This increases the amount of water retained inside the water-absorbent member (70).

[0080] The fixing pin (66b) is located at the center of the surface of the water impermeable wall (66a) facing the water absorbent member (70). The fixing pin (66b) is formed in a trapezoidal cone shape whose outer diameter decreases toward the water absorbent member (70). The fixing pin (66b) is inserted into an insertion hole (79) of the water absorbent member (70). The fixing pin (66b) fits into the insertion hole (79), thereby fixing the water absorbent member (70) to the second frame (60).

[0081] The fixed wall (66c) is formed in a U-shape that is open radially outward when viewed in a cross section perpendicular to the axial direction. An annular flange (67) that protrudes axially is formed on the surface of the second frame body (62) facing the water absorbent member (70). Two radially outer ends of the fixed wall (66c) are continuous with the inner peripheral surface of the flange (67). The fixed wall (66c) fits into the second groove (78) of the water absorbent member (70). The water absorbent member (70) is fixed to the second frame (60) by fitting the fixed wall (66c) into the water absorbent member (70).

[0082] As described above, the water impermeable wall (66a) is provided with the fixing pins (66b) and the fixing wall (66c) as fixing portions. The water impermeable wall (66a) not only serves to prevent water from passing through the water absorbent member (70) but also serves as a member for fixing the water absorbent member (70).

[0083] (3-7) Water intake As shown in Figure 8, a plurality of second holes (55) and a plurality of third holes (57) are formed in the base (52a) of the first frame body (52). The second holes (55) and the third holes (57) form water intake holes for supplying water to the bucket (80). The third holes (57) correspond to the first bucket (80A). The second holes (55) correspond to the second bucket (80B). The second holes (55) serve both as water intake holes and as engagement holes for fixing the second bucket (80B) to the base (52a).

[0084] The second hole (55) is rectangular when viewed in the axial direction. The third hole (57) is circular when viewed in the axial direction. The second hole (55) is located forward of the opening (80a) of the second bucket (80B) in the direction of rotation. As shown in FIGS. 9 and 10 , the third hole (57) is located forward of the opening (80a) of the first bucket (80A) in the direction of rotation. When the second hole (55) is immersed in the water in the water tray (33), the water flows into the second bucket (80B) through the second hole (55). When the third hole (57) is immersed in the water in the water tray (33), the water flows into the first bucket (80A) through the third hole (57).

[0085] (4) Positional relationship between bucket and water tray The air purifier (10) is characterized by the relative positions of the bucket (80) and the water tray (33). As described above, the bucket (80) is disposed on the periphery of the rotary frame (45) and defines a water pooling area (S) for pooling water. The water pooling area (S) is a space extending in the rotational direction of the rotary frame (45). The bucket (80) supplies water in the water pooling area (S) to the water absorbing member (70) at a predetermined rotational position of the rotary frame (45). The water pooling area (S) is an area capable of pooling water pumped from the water tray (33) as the rotary frame (45) rotates. For example, the water pooling area (S) is a space enclosed by the first plate portion (81), the second plate portion (82), the third plate portion (83), and the fourth plate portion (84). In other words, the water pooling area (S) is the internal space of the bucket (80). The water collecting area (S) may also include the space where water flows out from the opening (80a) of the bucket (80) and reaches the spout (92).

[0086] Fig. 14 is a diagram illustrating the positional relationship between the bucket (80) and the water surface in the water tray (33). As shown in Fig. 14, in the air purifier (10), when the rotating frame (45) rotates and the bucket (80) reaches its lowest position, at least a portion of the water pooling area (S) is located above the water surface in the water tray (33).

[0087] Here, the "lowest position" refers to, for example, the position where the opening of the water tray (33) (the portion indicated by the dashed line in FIG. 14) is at its lowest. The "water level" refers to the water level when the water level in the water tray (33) is at its highest. This positional relationship between the bucket (80) and the water level can be achieved by adjusting the diameter of the rotary frame (45) and the position (height) of the rotary axis (X).

[0088] (5) Inlet position The base 52a of the rotary frame 45 has a surface (hereinafter referred to as the side surface 52b) perpendicular to the rotation axis X (see FIG. 14). The water inlet 57 is formed on the side surface 52b. In other words, the water inlet 57 is not present on the outer circumferential surface (cylindrical surface) of the rotary frame 45.

[0089] The water intake 57 is positioned so that the water in the water tray 33 continues to be introduced into the water pool area S even when the bucket 80 rotates a predetermined distance from the lowest position. Specifically, when the rotating frame 45 rotates and the water intake 57 reaches the lowest position, the water intake 57 is positioned below the lower limit water level in the water tray 33.

[0090] (6) Driving behavior The operation of the air purifier (10) will now be described.

[0091] (5-1) Basic operation of air purifier When the air purifier (10) is operating, the fan (22), the discharge unit (23), the UV irradiation unit (24), and the humidification unit (30) are driven. As shown in FIG. 2 , air from the target space is drawn into the air passage (P) through the first inlet (15), the second inlet (16), and the third inlet (20). The air drawn through the second inlet (16) and the third inlet (20) passes through each of the prefilters (21). The prefilters (21) capture relatively large dust particles in the air.

[0092] The air that has passed through the pre-filter (21) passes around the discharge unit (23) and the UV irradiation unit (24). The active species generated by the discharge unit (23) oxidize and decompose odorous and harmful components in the air. The ultraviolet rays emitted by the UV irradiation unit (24) sterilize viruses and bacteria in the air.

[0093] The air then passes through the HEPA filter (25) and the deodorizing filter (26) in that order, and then flows into the humidification space (31). The air in the humidification space (31) passes axially through the humidification rotor (44). At this time, water from the water-absorbing member (70) is applied to the air. The air humidified by the humidification rotor (44) is supplied to the target space through the outlet (12).

[0094] (4-2) Humidification unit operation When the air purifier (10) is in operation, the humidification unit (30) performs the following operations.

[0095] The drive mechanism (41) rotates the drive shaft (42), causing the humidification rotor (44) to rotate about the rotation axis (X). When the rotary frame (45) rotates, the bucket (80) revolves around the rotation axis (X). When the bucket (80) moves below the rotary frame (45) and the water tray (33) is submerged, water enters the water pooling area (S) of the bucket (80). When the bucket (80) moves upward and out of the water tray (33), water is pumped into the water pooling area (S) of the bucket (80).

[0096] When water is pumped into the water puddle area (S), the air inside the water puddle area (S) escapes to the outside. During this process, a part of the water puddle area (S) that does not contain water (a space where air remains) is created. In Figure 14, space (S3) is the space where air remains.

[0097] In the air purifier (10), the space (S3) in which the air remains is in communication with the atmosphere (see FIG. 14). In other words, the air in the water pooling region (S) is unlikely to form independent bubbles. This is because, when the bucket (80) is in its lowest position, at least a portion of the water pooling region (S) is located above the water surface in the water tray (33).

[0098] When the bucket (80) moves further upward and reaches a predetermined first angular position on the front side of the upper end of the rotary frame (45), the water in the water pooling area (S) starts to flow down toward the opening (80a).

[0099] As the rotary frame (45) continues to rotate, the water that has passed through the opening (80a) of the bucket (80) is guided by the guide portion (90) to the spout (92). Specifically, the guide portion (90) sends the water that has passed through the opening (80a) along the bottom surface (97) to the spout (92). The water that has passed through the spout (92) is supplied to the interior of the water-absorbent member (70) through the first ventilation surface (74) of the water-absorbent member (70). The water in the water-absorbent member (70) is applied to the air flowing through the humidification space (31).

[0100] As the rotary frame 45 rotates further, the bucket 80 moves to the lower side of the rotary frame 45 and re-enters the water in the water tray 33. The above-mentioned operation is continuously repeated.

[0101] (7) Effects of this embodiment In this embodiment, when water is pumped into the bucket (80), at least a portion of the water pooling region (S) is located above the water surface in the water storage section (33), and therefore the space (S3) containing remaining air is in communication with the atmosphere, making it difficult for air bubbles to form in the water pooling region (S). Therefore, in this embodiment, air bubbles are unlikely to be released into the water. In other words, the air purifier (10) can suppress the generation of abnormal noise.

[0102] In the air purifier (10), even if the bucket (80) rotates a predetermined distance from the lowest position, the water in the water tray (33) is introduced into the water pooling region (S) through the water inlet (57). Therefore, in the air purifier (10), water can be reliably introduced into the water pooling region (S).

[0103] The water inlet (57) is formed on the side surface (52b) of the rotary frame (45). In other words, there are no openings such as the water inlet (57) on the outer circumferential surface of the rotary frame (45). This prevents air from leaking out from the outer circumferential surface of the rotary frame (45). This improves the efficiency of humidification in the air purifier (10).

[0104] Other Embodiments The humidifier may be a device other than the air purifier 10. The humidifier may be an air conditioner that adjusts the temperature of the air in the target space, a humidity control device that adjusts the humidity of the air in the target space, or a ventilation device that ventilates the target space.

[0105] The drive mechanism (41) may have a gear that meshes with a gear formed on the outer circumferential surface of the humidification rotor (44), and a drive shaft that rotates the gear.

[0106] The water scooping top (80) may be a dish, a container, or a recess formed in the rotating frame (45) that can scoop up water from the water reservoir (33).

[0107] The water storage section (33) may be a tank or a container as long as it can store water.

[0108] The spout 92 may be formed on the bucket 80. In other words, the opening 80a of the bucket 80 may also serve as the spout 92.

[0109] In the first frame (50), the first bucket (80A) and the second bucket (80B) may be integrally formed as the same part.

[0110] The side surface (52b) does not necessarily have to be perpendicular to the rotation axis (X), and may be inclined with respect to the rotation axis (X) (in other words, may intersect with the rotation axis (X)).

[0111] Although the embodiments and modifications 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. Elements of the above embodiments, modifications, and other embodiments may be combined or substituted as appropriate.

[0112] The terms "first," "second," "third," etc. mentioned above are used to distinguish the terms to which these terms are attached, and do not limit the number or order of the terms. [Industrial Applicability]

[0113] INDUSTRIAL APPLICABILITY As described above, the present disclosure is useful for humidifiers. [Explanation of symbols]

[0114] 33 Water tray (water storage section) 41 Drive mechanism 45 rotating frame 52b Side 57 3rd hole (water inlet) 70 Water-absorbing material 80 Bucket (water supply member) S Water reservoir area S3 space X rotation axis

Claims

1. The water absorbing device comprises a rotary frame (45) that is rotated by a drive mechanism (41), a water absorbing member (70) that is held by the rotary frame (45), and a water storage section (33) that stores water to be supplied to the water absorbing member (70), The rotary frame (45) has a water supply member (80) for supplying water in the water storage section (33) to the water absorption member (70), The water supply member (80) Located on the periphery of the rotary frame (45), A water reservoir area (S) is formed, supplying water in the water pooling area (S) to the water absorbing member (70) at a predetermined rotational position of the rotary frame (45); When the rotary frame (45) rotates and the water supply member (80) reaches its lowest position, at least a portion of the water pooling region (S) is located above the water surface in the water storage section (33), The water pooling region (S) includes a first space (S1) and a second space (S2), The first space (S1) overlaps with the water absorbing member (70) in the axial direction of the rotary frame (45), the second space (S2) is adjacent to the first space (S1) and projects toward the water-absorbing member (70); The length of the first space in a direction perpendicular to the axial direction of the rotary frame (45) is longer than the length of the second space in the perpendicular direction. humidifier.

2. In the humidifier of claim 1, The water level is the water level when the water level in the water storage section (33) is at its highest. humidifier.

3. The humidifier according to claim 1 or 2, a water intake (57) that is immersed in water in the water storage section (33) at a predetermined rotation position of the rotary frame (45); The water intake (57) continues to introduce water from the water reservoir (33) into the water pooling area (S) even when the water supply member (80) rotates a predetermined distance from the lowest position. humidifier.

4. The humidifier of claim 3, The rotary frame (45) has a side surface (52b) that is perpendicular to or intersects with the rotation axis (X), The water intake (57) is formed on the side surface (52b). humidifier.

5. The humidifier according to claim 1 or 2, The water pool area (S) is a space extending in the rotation direction of the rotary frame (45). humidifier.

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