CN115031324A

CN115031324A - Air humidifier

Info

Publication number: CN115031324A
Application number: CN202210720778.4A
Authority: CN
Inventors: 庄贵丰; 甘唤璋; 周振翔
Original assignee: Ningbo Xiaohu Technology Co ltd
Current assignee: Ningbo Xiaohu Technology Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-09-09

Abstract

The invention discloses an air humidifier, which comprises a shell (1), wherein an air inlet (11), an air outlet (12) and a mist outlet (13) are formed in the shell (1); the shell (1) is also internally provided with a water tank (2) and a base (3); an air channel (4) and a turbofan (5) are arranged in the shell (1); the base (3) is provided with an evaporation and humidification net (6), an evaporation water tank (31) and a strip-shaped spray header (32); an atomizing water tank (33) is also arranged on the base (3); at least one ultrasonic atomizer (34) is arranged in the atomization water tank (33); a water column noise reduction component (7) is arranged on the base (3); the air humidifier disclosed by the invention combines two functions of ultrasonic atomization humidification and evaporation humidification, water in a water tank of the humidifier is not easy to spill out when the humidifier shakes or topples over, and the air humidifier has the characteristic of low atomization noise.

Description

Air humidifier

Technical Field

The invention relates to the technical field of humidifiers, in particular to an air humidifier.

Background

The existing air humidifier comprises two common modes of ultrasonic atomization humidification and evaporation humidification according to a humidification principle, wherein the main principle of the evaporation humidification is that airflow is guided to penetrate through an evaporation humidification net absorbing moisture, and the moisture absorbed by the evaporation humidification net is evaporated and discharged into indoor air, so that the humidity of the indoor air is increased; the atomizing humidification theory of thumb adopts ultrasonic nebulizer, break up into fog with the water in the basin and arrange to the air in to air humidification, but along with the increase of ultrasonic nebulizer power, it is at the during operation, water can be shaken the water column by the ultrasonic wave, the water column can disperse again and fall into the basin under the action of gravity, the water droplet groove of falling into water can produce great water sound, the water column tip is dispersed and is beaten atomizing intracavity wall with the drop of water that splashes and also be one of the reasons that produces the noise, and if directly block that the water column forms then can seriously reduce ultrasonic nebulizer's fog production volume.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art: the air humidifier has the advantages that the water in the water tank is not easy to spill out when the humidifier shakes or topples over, and the atomization noise is low.

The technical solution of the invention is as follows: an air humidifier comprises a shell, wherein an air inlet, an air outlet and a mist outlet are formed in the shell; the shell is also internally provided with a water tank and a base; an air duct communicated with the air outlet and a turbofan which is arranged in the air duct and driven by a motor are arranged in the shell; the base is provided with a rotatable cylindrical evaporation humidification net with a horizontal axis; an evaporation water tank is arranged below the evaporation humidification net on the base; a strip-shaped spray header communicated with the evaporation water tank is arranged below the evaporation humidification net on the base; an atomization water tank is also arranged on the base; at least one ultrasonic atomizer is arranged in the atomization water tank; the atomization water tank is communicated with the water tank; an atomization cavity communicated with the atomization water tank is arranged in the water tank; the atomization cavity is arranged above the ultrasonic atomizer; a mist channel which is communicated with the mist outlet and the atomizing cavity is arranged in the water tank; a water column noise reduction assembly is arranged in the atomizing cavity on the base; the water column noise reduction assembly is arranged above the ultrasonic atomizer.

As optimization, the evaporation humidification net is circumferentially provided with gear rings; the output shaft of the motor of the turbofan is connected with the input shaft of the reduction gearbox; and an output shaft of the reduction gearbox is provided with a gear meshed with the gear ring and used for driving the evaporation humidification net to rotate.

As optimization, the evaporation water tank is provided with a water storage area, a water filtering area and a water tank cover from bottom to top; a water inlet pipe communicated with the water tank is arranged on the water storage area; a water outlet pipe is also arranged on the water storage area; the water outlet pipe is communicated with the strip-shaped spray header through a water pump; the water filtering area is internally provided with a water inlet which completely covers the filter cotton at the inlet of the water storage area.

As optimization, the water level of the water supply in the evaporation water tank is not more than the depth of the water storage area; the water inlet of the water tank cover is arranged in the middle of the water tank cover, and the water tank cover is provided with a sealing edge around the water inlet; the water quantity in the water storage area is smaller than the volume formed by the sealing edge and the water filtering area when the water storage area is poured.

As optimization, the water column noise reduction assembly comprises a circular bottom plate, a middle cylinder and a top cover; the middle cylinder is sleeved on the circular bottom plate, and the top cover is coaxially arranged at the upper end of the middle cylinder; a water column guide pipe communicated with the interior of the middle cylinder is arranged on the circular bottom plate; the upper surface of the circular bottom plate is provided with an annular spine array around the water column guide pipe; a plurality of water discharge openings are formed in the circular bottom plate; noise reduction and flow guide ribs are uniformly arranged on the inner wall of the middle cylinder around the axis of the middle cylinder; the noise reduction flow guide ribs are vertically distributed and are provided with cutting edges facing the axis of the middle cylinder; the top of the top cover is provided with a mist outlet coaxial with the water column guide pipe; arc noise reduction ribs are uniformly arranged on the top cover around the axis of the mist outlet hole; the water column guide pipe is coaxially arranged above the ultrasonic atomizer.

As optimization, the water discharge opening is positioned in the opening direction of the inner part of the middle cylinder and is horizontally arranged; the arc-shaped noise reduction ribs are provided with cutting edges facing the axis of the top cover; gaps are reserved between the adjacent arc-shaped noise reduction ribs on the top cover.

Preferably, the water tank comprises a detachable water tank cover; a water filling port is arranged on the water tank cover, and an anti-overflow valve is arranged at the inner end of the water filling port; the anti-overflow valve comprises a movable valve core and a guide base; the movable valve core is in an inverted round table shape and is arranged in the cavity of the guide base; a plurality of guide ribs which are in sliding fit with the side wall of the movable valve core are arranged in the cavity of the guide base and are used for guiding the movable valve core to the upper end face of the movable valve core to seal the water filling port when the water tank is toppled; and a gap for communicating the cavity of the guide base and the interior of the water tank is formed between every two adjacent guide ribs.

As optimization, when the water tank is in a vertical state, a gap is formed between the upper end surface of the movable valve core and the inner end surface of the water filling port; when the water tank is in a dumping state, the upper end face of the movable valve core is attached to the inner end face of the water filling port.

As optimization, the upper end surface of the guide rib is matched with the side wall of the movable valve core, and the upper end surface of the guide rib and a horizontal plane have an inclination angle; and a gap is formed between the side wall of the movable valve core and the inner wall of the cavity of the guide base.

Preferably, the base is provided with a fan, and the air inlet end of the fan is communicated with the atmosphere, and the air outlet end of the fan is communicated with the atomizing cavity.

The invention has the beneficial effects that: the air humidifier disclosed by the invention combines two functions of ultrasonic atomization humidification and evaporation humidification, water in a water tank of the humidifier is not easy to spill out when the humidifier shakes or topples over, and the air humidifier has the characteristic of low atomization noise.

Drawings

Fig. 1 is a schematic perspective view of an air humidifier according to an embodiment.

Fig. 2 is an exploded view of the air humidifier according to the embodiment.

Fig. 3 is a schematic cross-sectional structural view of an air humidifier in an embodiment.

Fig. 4 is a schematic sectional perspective view of an air humidifier according to an embodiment.

Fig. 5 is a schematic sectional structure view of an air humidifier in an embodiment.

Fig. 6 is an exploded view of the base and the humidification mesh of the air humidifier in the embodiment.

Fig. 7 is an exploded view of a water column noise reduction assembly of an embodiment of an air humidifier.

Fig. 8 is a schematic cross-sectional perspective view of a water column noise reduction assembly of an embodiment of an air humidifier.

Fig. 9 is an exploded view of the water tank lid of the air humidifier according to the embodiment.

Fig. 10 is a partial sectional structural schematic view of a water tank of an air humidifier in an embodiment.

Fig. 11 is a partial sectional view schematically showing a water tank of the air humidifier after being poured in accordance with an embodiment of the present invention.

In the figure: 1. a housing; 11. An air inlet; 12. an air outlet; 13. a mist outlet; 2. a water tank; 21. an atomizing chamber; 22. a mist channel; 23. a water injection port; 24. an annular groove; 3. a base; 31. an evaporation water tank; 311. a water storage area; 312. a water filtration zone; 313. a water tank cover; 314. a water inlet pipe; 315. a water outlet pipe; 316. filtering cotton; 32. a bar-shaped shower head; 33. an atomization water tank; 34. an ultrasonic atomizer; 4. an air duct; 5. A turbo fan; 51. a reduction gearbox; 6. an evaporation humidification net; 61. a ring gear; 7. a water column noise reduction assembly; 71. a circular base plate; 72. a middle cylinder; 73. a top cover; 74. a water column conduit; 75. an annular array of spikes; 76. a water discharge opening; 77. noise reduction and flow guide ribs; 78. a mist outlet; 79. arc noise reduction ribs; 8. an anti-overflow valve; 81. a movable valve core; 82. a guide base; 9. a fan.

Detailed Description

The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples.

Examples

As shown in fig. 1 to 11, the present embodiment provides an air humidifier, which includes a housing 1, wherein the housing 1 is provided with an air inlet 11, an air outlet 12, and a mist outlet 13; the shell 1 is also internally provided with a water tank 2 and a base 3;

an air duct 4 communicated with the air outlet 12 and a turbofan 5 driven by a motor and arranged in the air duct 4 are arranged in the shell 1;

a rotatable cylindrical evaporation humidification net 6 with a horizontal axis is arranged on the base 3;

the base 3 is provided with a bearing for supporting the evaporation humidification screen 6; and rotating shafts matched with the bearings are arranged at two ends of the evaporation humidification net 6.

The evaporation humidification net 6 is circumferentially provided with a gear ring 61; the output shaft of the motor of the turbofan 5 is connected with the input shaft of the reduction gearbox 51; an output shaft of the reduction gearbox 51 is provided with a gear meshed with the gear ring 61 and used for driving the evaporation humidification net 6 to rotate.

And two ends of the evaporation humidification screen 6 are opposite to the air inlet 11.

An evaporation water tank 31 is arranged below the evaporation humidification screen 6 on the base 3;

a strip-shaped spray header 32 communicated with an evaporation water tank 31 is arranged below the evaporation humidification net 6 on the base 3;

the axis of the strip-shaped spray header 32 is parallel to the axis of the evaporation humidification screen 6.

The evaporation water tank 31 is provided with a water storage area 311, a water filtering area 312 and a water tank cover 313 from bottom to top.

The water storage area 311 is provided with a water inlet pipe 314 communicated with the water tank 2 through an electromagnetic valve; to achieve water replenishment of the impoundment area 311.

The water storage area 311 is further provided with a water outlet pipe 315. The water outlet pipe 315 is communicated with the strip-shaped spray header 32 through a water pump. The water spraying holes of the strip-shaped spray heads 32 are right opposite to the side faces of the evaporation humidification net 6, water can be supplied to the evaporation humidification net 6 by controlling a water pump, and water can be supplied to the evaporation humidification net 6 while the evaporation humidification net is driven by the reduction gearbox 51 to rotate and supply water at the same time, so that the effect of uniform water supply is achieved.

The filter cotton 316 which completely covers the inlet of the water storage area 311 is arranged in the water filtering area 312.

The water tank cover 313 is provided with a water inlet. The water return after the bar shower head 32 sprays the evaporation humidification net 6 gets into the water inlet, then through the filtration of filter pulp 316, gets into water storage area 311 and supplies bar shower head 32 to use to prevent that impurity, dust from blockking up evaporation humidification net 6's pore, influencing its gas permeability, water after the filtration sprays the effect that has the washing evaporation humidification net 6 on evaporation humidification net 6 in addition, prolongs evaporation humidification net 6's life.

The water level of the water supplied into the evaporation water tank 31 is not more than the depth of the water storage area 311.

A water inlet of the water tank cover 313 is arranged in the middle of the water tank cover 313, and a sealing edge is arranged on the water tank cover 313 and surrounds the water inlet; the amount of water in the impounded area 311 is less than the volume of space formed by the sealed edge and the filtered water area 312. The width of the sealing edge is determined as required, as long as it is ensured that when the humidifier is toppled, the volume formed by the sealing edge and the water filtering area 312 can completely contain all overflowed water in the water storage area 311; that is, by controlling the volume of the water storage area 311 to be smaller than the volume formed by the sealing edge and the water filtering area 312 after the humidifier is poured, and then controlling the water level in the water storage area 311 to be not larger than the volume, even if the humidifier is poured, all water in the water storage area 311 overflows into the space volume formed by the sealing edge and the water filtering area 312, the water does not flow out of the evaporation water tank 31 from the water inlet of the water tank cover 313, so that the technical effect that the water in the evaporation water tank 31 is not easily spilled when the humidifier shakes or pours is achieved. The sealing edge refers to an area on the water tank cover 313 from the side wall of the water inlet to the side wall of the water tank cover 313.

The evaporation and humidification net 6 is located above the evaporation water tank 31, and has no part immersed in water, so that the evaporation and humidification net 6 has high evaporation efficiency and large effective evaporation area.

An atomization water tank 33 is also arranged on the base 3; 2 ultrasonic atomizers 34 are arranged in the atomizing water tank 33; the atomization water tank 33 is communicated with the water tank 2 through an electromagnetic valve; an atomization cavity 21 communicated with the atomization water tank 33 is arranged in the water tank 2; the atomization cavity 21 is arranged above the ultrasonic atomizer 34;

a mist channel 22 communicating the mist outlet 13 with the atomizing cavity 21 is arranged in the water tank 2;

optionally, an automatically opening and closing communication channel may be provided between the mist channel 22 and the air duct 4.

A water column noise reduction assembly 7 is arranged in the atomization cavity 21 on the base 3; the embodiment is provided with 2 water column noise reduction assemblies 7; the water column noise reduction assembly 7 is arranged above the ultrasonic atomizer 34; the water column noise reduction assembly 7 comprises a circular bottom plate 71, a middle cylinder 72 and a top cover 73; the middle cylinder 72 is sleeved on the circular bottom plate 71, and the top cover 73 is coaxially arranged at the upper end of the middle cylinder 72; a water column conduit 74 communicated with the interior of the middle cylinder 72 is arranged on the circular bottom plate 71; the upper surface of the circular bottom plate 71 is provided with an annular spike array 75 surrounding the water column guide pipe 74; a plurality of water discharge openings 76 are formed in the circular bottom plate 71; the inner wall of the middle cylinder 72 is uniformly provided with noise reduction and flow guide ribs 77 around the axis; the noise reduction flow guide ribs 77 are vertically distributed and have cutting edges facing the axis of the middle cylinder 72; the top of the top cover 73 is provided with a mist outlet 78 coaxial with the water column conduit 74; arc-shaped noise reduction ribs 79 are uniformly arranged on the top cover 73 around the axis of the mist outlet hole 78; the water column conduit 74 is coaxially disposed above the ultrasonic atomizer 34.

Annular spine array 75's spine length is along circular bottom plate 71 edge with be normal distribution between the water column pipe 74, be located circular bottom plate 71 edge with the water column pipe 74 is middle longest, is close to circular bottom plate 71 edge or water column pipe 74 is short in the time, can realize the effect of transition guide rivers to realize dripping and fall and make an uproar. The sharp thorn is a cylinder with a conical tip.

The drain opening 76 is horizontally arranged in the opening direction in the inner part of the middle tube 72. The arrangement can avoid the generation of water dripping sound caused by the fact that water drops falling back from the water column directly drip to the liquid level. The drain opening 76 of this embodiment is located around the edge of the circular base plate 71 around the water column conduit 74.

The outer wall of the middle cylinder 72 is uniformly provided with vertical guide grooves around the axis. And guiding the liquid drops falling back from the outside.

The arc-shaped noise reduction ribs 79 have cutting edges facing the axis of the top cover 73, and the cutting edge angle is 10-45 degrees. Well section of thick bamboo 72 can prevent that the drop of water from splashing, and the water conservancy diversion muscle 77 of making an uproar that falls that has the blade on it can effectively carry out the water conservancy diversion to the drop of water that splashes, and directly spatters the cutting guide of the liquid drop of well section of thick bamboo 72 inner wall through its blade can reduce the produced noise of liquid drop front impact inner wall.

Gaps are reserved between adjacent arc-shaped noise reduction ribs 79 on the top cover 73. The outer contour of the top cover 73 is hemispherical. The clearance can guarantee that ultrasonic atomization's fog can pass through, but some drop of water can be blockked by the muscle 79 of making an uproar that falls in the arc, and the muscle 79 cross-section of making an uproar is triangle-shaped falls in the arc, is favorable to enlarging drop of water area of contact, and slides down along the wall.

The mist outlet 78 avoids restriction of the water column body and prevents direct impact at the end of the water column. Avoid producing the influence to the atomizing volume of atomizing piece.

The arc-shaped noise reduction ribs 79 can cut and guide dispersed liquid drops at the end of the water column to flow back along the inner wall and the outer wall of the middle cylinder 72, so that the liquid drops are prevented from impacting the inner wall of the atomizing cavity to generate large noise.

This embodiment the cover is equipped with circular pressurized-water plate on the water column pipe 74, circular pressurized-water plate with the coaxial setting of water column pipe 74, be equipped with the trompil just to discharge opening 76 on the circular pressurized-water plate for leak the backward flow water. The circular water pressing plate can float up and down along the water column guide pipe 74 and is used for blocking spray splash in the area except the water column generated by the ultrasonic atomizer 34, and further reducing noise sources.

The water tank 2 comprises a detachable water tank cover; a water filling port 23 is arranged on the water tank cover, and an anti-overflow valve 8 is arranged at the inner end of the water filling port 23.

The anti-overflow valve 8 comprises a movable valve core 81 and a guide base 82;

the movable valve core 81 is in an inverted round table shape and is arranged in the cavity of the guide base 82; 8 guide ribs which are in sliding fit with the side wall of the movable valve core 81 are arranged in the cavity of the guide base 82 and used for guiding the movable valve core 81 to the upper end face of the movable valve core 81 to seal the water injection port 23 when the water tank is toppled; and a gap for communicating the cavity of the guide base 82 and the interior of the water tank 2 is formed between the adjacent guide ribs.

When the water tank 2 is in a vertical state, a gap is formed between the upper end surface of the movable valve core 81 and the inner end surface of the water filling port 23; when the water tank 2 is in a dumping state, the upper end surface of the movable valve core 81 is attached to the inner end surface of the water filling port 23. The cross section of the cavity of the guide base 82 is circular, the guide ribs are arranged along the radial extension of the cavity, and the guide ribs are uniformly distributed around the axis of the cavity.

The upper end surface of the guide rib is matched with the side wall of the movable valve core 81, and the upper end surface of the guide rib and the horizontal plane have an inclination angle. The upper surface of the movable valve element 81 is circular, and when the movable valve element is attached to the inner end surface of the water filling port 23 in any posture, the upper surface of the movable valve element 81 can completely cover the water filling port 23.

A plurality of annular grooves 24 coaxial with the water injection port 23 are arranged on the inner end face of the water injection port. The annular groove 24 can enhance the sealing performance of the movable valve core 81 attached to the inner end face of the water injection port 23, and for further improving the sealing performance, the movable valve core 81 is made of silica gel or rubber.

A gap is formed between the side wall of the movable valve core 81 and the inner wall of the cavity of the guide base 82.

As shown in fig. 10 to 11, the air humidifier of this embodiment can realize that no matter which direction the air humidifier is tilted from, the guiding rib guides the movable valve element 81 to the upper end surface of the movable valve element 81 to close the water filling port 23, the upper end surface of the movable valve element 81 is attached to the inner end surface of the water filling port 23, and the sealing performance is enhanced under the action of water pressure, so that the water is effectively prevented from overflowing. This is because the movable valve element 81 is in the shape of an inverted circular truncated cone, and the guide ribs are uniformly distributed circumferentially around the tapered side wall of the movable valve element 81. When the humidifier is in a vertical state, the movable valve core 81 slides into the bottom of the guide rib under the action of gravity, and a large gap is formed between the upper end surface of the movable valve core 81 and the inner end surface of the water filling port 23; water can be injected directly through the water injection port 23; thereby effectively solving the problem that a large amount of water overflows after the humidifier is accidently dumped while conveniently adding water at any time.

The base 3 is provided with a fan 9, and the air inlet end of the fan 9 is communicated with the atmosphere, and the air outlet end of the fan is communicated with the atomizing cavity 21. The fan 9 can accelerate the fog to be discharged from the fog outlet 13, so that the humidifying efficiency is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The above are merely exemplary embodiments of the features of the present invention, and do not limit the scope of the present invention in any way. All technical solutions formed by adopting the equivalent exchange or the equivalent substitution fall within the protection scope of the present invention.

Claims

1. An air humidifier comprises a shell (1), wherein an air inlet (11), an air outlet (12) and a mist outlet (13) are formed in the shell (1); the shell (1) is also internally provided with a water tank (2) and a base (3); the air conditioner is characterized in that an air duct (4) communicated with the air outlet (12) and a turbofan (5) which is arranged in the air duct (4) and driven by a motor are arranged in the shell (1); a rotatable cylindrical evaporation humidification screen (6) with a horizontal axis is arranged on the base (3); an evaporation water tank (31) is arranged below the evaporation humidification net (6) on the base (3); a strip-shaped spray header (32) communicated with an evaporation water tank (31) is arranged below the evaporation humidification net (6) on the base (3); an atomization water tank (33) is also arranged on the base (3); at least one ultrasonic atomizer (34) is arranged in the atomization water tank (33); the atomization water tank (33) is communicated with the water tank (2); an atomization cavity (21) communicated with the atomization water tank (33) is arranged in the water tank (2); the atomization cavity (21) is arranged above the ultrasonic atomizer (34); a mist channel (22) which is communicated with the mist outlet (13) and the atomizing cavity (21) is arranged in the water tank (2); a water column noise reduction assembly (7) is arranged in the atomizing cavity (21) on the base (3); the water column noise reduction assembly (7) is arranged above the ultrasonic atomizer (34).

2. An air humidifier according to claim 1, characterized in that the evaporation humidification mesh (6) is circumferentially provided with a gear ring (61); the output shaft of the motor of the turbofan (5) is connected with the input shaft of the reduction gearbox (51); an output shaft of the reduction gearbox (51) is provided with a gear meshed with the gear ring (61) and used for driving the evaporation humidification net (6) to rotate.

3. An air humidifier according to claim 1, wherein the evaporation water tank (31) is provided with a water storage area (311), a water filtering area (312) and a water tank cover (313) from bottom to top; a water inlet pipe (314) communicated with the water tank (2) is arranged on the water storage area (311); a water outlet pipe (315) is also arranged on the water storage area (311); the water outlet pipe (315) is communicated with the strip-shaped spray header (32) through a water pump; the water filtering area (312) is internally provided with filter cotton (316) which completely covers the inlet of the water storage area (311), and the water tank cover (313) is provided with a water inlet.

4. An air humidifier according to claim 3, wherein the water supply level in the evaporation water tank (31) is not greater than the depth of the water storage area (311); the water inlet of the water tank cover (313) is arranged in the middle of the water tank cover, and a sealing edge is arranged on the water tank cover (313) and surrounds the water inlet; the amount of water in the impounded area (311) is less than the volume formed by the sealed edge and the filtered water area (312) when pouring.

5. An air humidifier according to claim 1, wherein the water column noise reduction assembly (7) comprises a circular base plate (71), a middle cylinder (72) and a top cover (73); the middle cylinder (72) is sleeved on the circular bottom plate (71), and the top cover (73) is coaxially arranged at the upper end of the middle cylinder (72); a water column conduit (74) communicated with the interior of the middle cylinder (72) is arranged on the circular bottom plate (71); an annular spine array (75) is arranged on the upper surface of the circular bottom plate (71) around the water column guide pipe (74); a plurality of water discharge openings (76) are formed in the circular bottom plate (71); noise reduction and flow guide ribs (77) are uniformly arranged on the inner wall of the middle cylinder (72) around the axis of the middle cylinder; the noise reduction flow guide ribs (77) are vertically distributed and are provided with cutting edges facing the axis of the middle cylinder (72); the top of the top cover (73) is provided with a mist outlet (78) coaxial with the water column guide pipe (74); arc-shaped noise reduction ribs (79) are uniformly arranged on the top cover (73) around the axis of the mist outlet hole (78); the water column conduit (74) is coaxially disposed above the ultrasonic atomizer (34).

6. An air humidifier according to claim 5, wherein the drain opening (76) is horizontally arranged in an opening direction inside the middle cylinder (72); the arc-shaped noise reduction ribs (79) are provided with cutting edges facing the axis of the top cover (73); gaps are reserved between adjacent arc-shaped noise reduction ribs (79) on the top cover (73).

7. An air humidifier according to claim 1, wherein the water reservoir (2) comprises a removable reservoir cap; a water filling port (23) is arranged on the water tank cover, and an anti-overflow valve (8) is arranged at the inner end of the water filling port (23); the anti-overflow valve (8) comprises a movable valve core (81) and a guide base (82); the movable valve core (81) is in an inverted round table shape and is arranged in the cavity of the guide base (82); a plurality of guide ribs which are in sliding fit with the side wall of the movable valve core (81) are arranged in the cavity of the guide base (82) and are used for guiding the movable valve core (81) to the upper end face of the movable valve core (81) to seal the water filling port (23) when the water tank is dumped; and a gap for communicating the cavity of the guide base (82) and the interior of the water tank (2) is formed between every two adjacent guide ribs.

8. The air humidifier according to claim 7, wherein when the water tank (2) is in a vertical state, a gap is provided between an upper end surface of the movable valve core (81) and an inner end surface of the water filling port (23); when the water tank (2) is in a toppling state, the upper end face of the movable valve core (81) is attached to the inner end face of the water filling port (23).

9. An air humidifier according to claim 8, wherein the upper end surface of the guide rib is engaged with the side wall of the movable valve element (81).

10. An air humidifier according to claim 9, wherein an upper end surface of said guide rib has an inclination angle with respect to a horizontal plane.

11. An air humidifier according to claim 10, wherein a gap is provided between the side wall of the movable valve core (81) and the inner wall of the cavity of the guide base (82).

12. The air humidifier according to claim 1, wherein a fan (9) is disposed on the base (3), an air inlet end of the fan (9) is communicated with the atmosphere, and an air outlet end of the fan (9) is communicated with the atomization chamber (21).