Water curtain air purifier

Abstract

To provide a water curtain type air purifier that solves the problem of loud water flow noise. [Solution] A water curtain type air purifier 100 includes an external cylinder 10, a housing component 1, a water sealing component 2, and a flow guide structure 3. The housing component is arranged inside the external cylinder and includes a first air intake port 111. The outer wall of the housing component and the inner wall of the external cylinder form a first annular exhaust port 122. A part of the water sealing component is located inside the housing component and communicates with the water at the bottom of the external cylinder. It is configured to spray a curtain of water onto the inner wall of the housing component to form a water seal with the inner wall of the housing component. The flow guide structure is arranged on the inner wall of the housing component and / or the water sealing component, and guides water flowing along the inner wall of the housing component and / or the water sealing component to the bottom of the housing component.

Description

[Technical Field]

[0001] The present invention relates to the technical field of air purification, and specifically provides a water curtain type air purification device. [Background technology]

[0002] Currently, as people's requirements for air quality continue to increase, the applications of air purifiers are becoming increasingly widespread, among which water curtain type air purifiers, which purify air using a water washing method, are environmentally friendly, and when water is used to purify air, water can be recycled, which not only further improves the environmental performance of water curtain type air purifiers but also reduces the operating costs of water curtain type air purifiers.In addition, water curtain type air purifiers generally have the advantage of being simple in structure.

[0003] However, in the case of conventional water curtain type air purifiers, when the water curtain comes into contact with the water curtain plate and then flows down due to its own gravity, it generally generates a loud noise, which is likely to cause noise pollution in the living environment. If people are in a noisy environment for a long period of time, it poses a potential safety risk to the human body, which affects the comfort of work and brings many inconveniences to daily life.

[0004] Accordingly, the field needs new technical solutions to solve the above problems. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to solve the above-mentioned technical problem, that is, the problem of the loud water flow noise of the conventional water curtain type air purifier. [Means for solving the problem]

[0006] The present invention provides a water curtain type air purifying device, which comprises: An outer cylinder; a housing component provided on the external cylinder and including a first air inlet, the housing component and the external cylinder forming an annular first air outlet; a water sealing component, a portion of which is inserted into the housing component, communicates with the water at the bottom of the external cylinder, and is configured to spray a curtain of water onto the inner wall of the housing component to form a water seal with the inner wall of the housing component; and a guide structure provided on the inner wall of the housing component and / or the water sealing component, configured to guide water flowing down along the inner wall of the housing component and / or the water sealing component to the bottom of the housing component, thereby reducing noise caused by water flow in the air purification device.

[0007] When the above technical solution is adopted, a water seal is formed between the curtain of water sprayed by the water seal component onto the inner wall of the housing component and the inner wall of the housing, allowing the curtain of water to purify the air that passes through.In addition, in the water curtain type air purifier of this invention, the inner wall of the housing component and / or the liquid seal component are further provided with a flow guide structure, so that the water flowing down along the inner wall of the housing component and / or the water seal component gradually flows to the bottom of the housing component under the action of the flow guide structure and is collected in the outer tube, reducing the volume of the water flow in the water curtain type air purifier, and thereby reducing the noise of the water flow in the water curtain type air purifier.

[0008] In the preferred technical solution of the above water curtain type air purifying device, the housing components are: a first sleeve having the first air intake port and a second air exhaust port, the first air intake port being provided at a tip end of the first sleeve and the second air exhaust port being provided at a bottom end of the first sleeve; a second sleeve including a second air intake port and the first air exhaust port, wherein the second air intake port is provided in a side wall of the second sleeve and the first air exhaust port is formed between an outer wall of the second sleeve and an inner wall of the external cylinder; The first sleeve is coaxially fitted into the second sleeve, and the first sleeve and the second sleeve are detachably connected to each other.

[0009] When the above technical solution is adopted, the housing component includes a first sleeve and a second sleeve, and the first sleeve and the second sleeve are installed in order from top to bottom, thus reducing the difficulty in designing and processing the housing component, and thereby reducing the manufacturing cost of the housing component.

[0010] In the preferred technical solution of the water curtain type air purifying device, the radial size of the first sleeve and / or the second sleeve gradually decreases from top to bottom.

[0011] When the above technical solution is adopted, the radial sizes of the first sleeve and the second sleeve gradually decrease from top to bottom. In this way, when water flows downward, it can flow along the gradually decreasing inner wall of the first sleeve. This avoids the situation where the water falls directly from the first housing to the bottom end of the second housing, which would make the sound of flowing water louder, and thus further reduces the noise of the water flow in the water curtain type air purifier.

[0012] In the preferred technical solution of the water curtain type air purifying device, in the assembled state, the second exhaust port is located below the first exhaust port.

[0013] When the above technical solution is adopted, the second exhaust port of the first sleeve is located below the first exhaust port of the second sleeve, and thus, when the water flows out from the second exhaust port of the first sleeve, the position is located below the first exhaust port of the second sleeve, thus reducing the risk of water flowing out of the second sleeve along with the flowing air, and thereby reducing the risk of water entering the room along with the flowing air.

[0014] In a preferred technical solution of the above-mentioned water curtain type air purifier, the first sleeve and the second sleeve are both stepped sleeves in which cylinders and cones are alternately arranged, and in the conical parts, the diameters of the first sleeve and the second sleeve gradually decrease from top to bottom.

[0015]

[0009] When the above technical solution is adopted, the first and second sleeves are both installed on stepped sleeves, which further reduces the difficulty in designing and processing the housing component and thus the manufacturing cost of the housing component. In addition, the first and second sleeves are both stepped sleeves with alternating cylindrical and conical sections, and the diameters of the first and second sleeves gradually decrease from top to bottom in the conical sections. This installation method reduces the volume of impact between the water flow and the first and second sleeves when water flows down along the inner walls of the first and second sleeves, thereby further reducing the noise of the water flow in the water curtain type air purifier.

[0016] In a preferred technical solution of the above-mentioned water curtain type air purifying device, the water curtain type air purifying device further includes a fan installed in the first sleeve, and when the first sleeve is in the installation position, the fan is located above the water sealing component and can blow air onto the water curtain sprayed from the water sealing component.

[0017]

[0004] When the above technical solution is adopted, the air pressure at the first air inlet can be made greater than the air pressure at the first air outlet when the fan rotates, and the differential pressure allows air to flow from above the water curtain to below the water curtain, thereby purifying the air with the water curtain. Furthermore, the water seal component continuously sprays the water curtain onto the inner wall of the sleeve, so that the air is purified in an intercepted manner as it passes through the water curtain, thereby ensuring the purification efficiency of the water curtain type air purifier. Furthermore, since the fan is mounted on the first sleeve and positioned above the water seal component, water can be prevented from entering the fan, thereby ensuring the service life of the fan. Furthermore, the above installation method simplifies the structure of the water curtain type air purifier.

[0018] In the preferred technical solution of the above water curtain type air purifying device, the water sealing component: a riser pipe provided inside the housing component, coaxial with the first sleeve and the second sleeve, and extending downward from an upper end of the first sleeve to a bottom end of the second sleeve; a nozzle communicating with the tip of the riser pipe; a pump having a liquid outlet connected to the bottom end of the riser pipe and a liquid inlet connected to water in the outer barrel, which supplies water to the nozzle through the riser pipe so that the nozzle sprays water onto the inner wall of the first sleeve to form a water curtain.

[0019] In a preferred technical solution of the above-mentioned water curtain type air purifying device, the flow guiding structure includes a flow guiding plate installed on the outer wall of the riser, and the flow guiding plate extends spirally downward from the tip of the riser to the bottom end of the riser.

[0020] When the above technical solution is adopted, the flow guide plate extends spirally downward from the tip of the standpipe to the bottom end of the standpipe, thus increasing the flow guide distance of the flow guide plate and further reducing the volume of water flow in the water curtain type air purifier.

[0021] In the preferred technical solution of the water curtain type air purifying device, the flow guide structure further includes an at least partially inclined inner wall of the first sleeve and / or the second sleeve.

[0022] When the above technical solution is adopted, the flow guide structure includes at least partially inclined inner walls of the first sleeve and / or second sleeve, which can reduce the volume of impact between the water flow and the first sleeve and the second sleeve when the water flows down along the inner walls of the first sleeve and the second sleeve, thereby further reducing the noise of the water flow in the water curtain type air purifier.

[0023] In a preferred technical solution of the above-mentioned water curtain type air purifying device, the first sleeve includes, from top to bottom, a first cylindrical portion and a first conical portion, and the second sleeve includes, from top to bottom, a second cylindrical portion, a second conical portion, a third cylindrical portion, a third conical portion and a fourth cylindrical portion, the taper of the first conical portion is greater than that of the second conical portion, and in an assembled state, the outer wall of the first conical portion and the inner wall of the second conical portion are sealed and locked together.

[0024] When the above technical solution is adopted, when the first sleeve and the second sleeve are assembled, the outer wall of the first conical portion can be sealed and engaged with the inner wall of the second conical portion, thus ensuring a sealed connection and reducing the difficulty of attaching the first sleeve and the second sleeve, thereby improving the assembly efficiency of the first sleeve and the second sleeve. [Brief explanation of the drawings]

[0025] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0026] [Figure 1] 1 is a half-sectional view taken along the axis of a housing component of a water curtain type air purifying device according to the present invention; [Figure 2] 1 is an exploded view of the water curtain type air purifier of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Those skilled in the art will understand that these embodiments are not intended to limit the scope of protection of the present invention, but are merely used to explain the technical principles of the present invention. Those skilled in the art can adjust them according to their needs to meet specific application scenarios.

[0028] In the description of the present invention, the directions or positional relationships indicated by terms such as "inside" and "outside" are based on the directions or positional relationships shown in the drawings, and do not indicate or imply that the device or element must have a particular orientation or be configured and operated in a particular direction. These are for ease of explanation only and should not be understood as limiting the present invention. Furthermore, the terms "first" and "second" should not be understood as indicating or implying relative importance, but are merely for explanatory purposes. In the description of the present invention, unless there is a clear and specific limitation, "plurality" means two or more than two.

[0029] Furthermore, in the description of the present invention, unless otherwise clearly specified or limited, the terms "connection" and "connection" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection, and may be directly connected or indirectly connected via an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0030] 1 is a half-sectional view of the water curtain type air purifying device of the present invention along the axis of the housing component, and FIG. 2 is an exploded view of the water curtain type air purifying device of the present invention.

[0031] It is intended to solve the problem of the loud water flow noise of the conventional water curtain air purifying device.

[0032] As shown in Figure 1 and also referring to Figure 2, the present invention provides a water curtain type air purifying device 100, which includes an external cylinder 10, a housing component 1, a water sealing component 2, and a flow guide structure 3, wherein the housing component 1 is disposed within the external cylinder 10 and includes a first air inlet 111, and the outer wall of the housing component 1 and the inner wall of the external cylinder 10 form an annular first air outlet 122, allowing air to enter through the first air inlet 111 and flow out through the first air outlet 122. A portion of the water sealing component 2 is located inside the housing component 1 and communicates with the water at the bottom of the external cylinder 10, and the water sealing component 2 is configured to spray a curtain of water onto the inner wall of the housing component 1 to form a water seal with the inner wall of the housing component 1. The flow guide structure 3 is provided on the water sealing component 2, and is configured so that water flowing down from the inner wall of the water sealing component 2 and / or the housing component 1 gradually flows to the bottom of the housing component due to the flow guide action of the flow guide structure 3, and finally flows into the water at the bottom of the outer tube 10, thereby reducing the noise of the water flow in the water curtain type air purifying device 100 and thereby reducing the interference of the operating noise of the water curtain type air purifying device 100 with the surrounding environment.

[0033] Here, the above-mentioned flow guide structure 3 described in conjunction with Figure 1 is provided on the water sealing component 2, but this is not limiting. In other embodiments of the present invention, the flow guide structure 3 may be provided on the inner wall of the housing component 1, which is also not limiting. Those skilled in the art can also install the flow guide structure 3 on the inner walls of the water sealing component 2 and the housing component 1 simultaneously according to their needs, so that the flow guide structure 3 can reduce the volume of water flow in the water curtain type air purifying device 100. Such adjustment does not deviate from the basic principles of the present invention and is therefore also within the scope of protection of the present invention.

[0034] In addition, although the external cylinder described above contains water, this is not limiting, and when specifically implementing the present invention, the external cylinder may contain other liquid substances as long as the liquid substances purify the air and do not cause any damage to the water curtain type air purifying device 100.

[0035] 1, referring also to FIG. 2, the housing component 1 includes a first sleeve 11 and a second sleeve 12, the first sleeve 11 is coaxially fitted into the second sleeve 12, and the first sleeve 11 and the second sleeve 12 are detachably connected. Specifically, the first sleeve 11 has a first air inlet 111 and a second air outlet 112, the first air inlet 111 being located at the top end of the first sleeve 11 and the second air outlet 112 being located at the bottom end of the first sleeve 11. The second sleeve 12 has a second air inlet 121 and a first air outlet 122, the second air inlet 121 being located in a side wall of the second sleeve 12, and the first air outlet 122 being formed between the outer wall of the second sleeve 12 and the inner wall of the outer cylinder 10.

[0036] Here, the above-mentioned housing component 1 described in conjunction with Figure 1 includes a first sleeve 11 and a second sleeve 12, but this is not limiting, and a person skilled in the art may install the housing component 1 to include an integrally molded third sleeve (not shown), so that the water sprayed from the water seal component 2 flows downward along the inner wall of the third sleeve. However, this is also not limiting, and a person skilled in the art may install the housing component 1 in a non-sleeve form, for example, as long as the curtain-like water sprayed from the water seal component 2 can form a liquid seal with the housing component 1, and the position of the liquid seal is located between the first air intake port 111 and the first air exhaust port 122 of the housing component 1.

[0037] Furthermore, although the first sleeve 11 and the second sleeve 12 described above in conjunction with Figure 1 are both circular sleeves, this is not limiting. In other embodiments of the present invention, the first sleeve 11 and the second sleeve 12 may be rectangular sleeves or sleeves with polygonal inner walls, but this is also not limiting. Those skilled in the art may install the first sleeve 11 and the second sleeve 12 in irregularly shaped sleeves according to their needs, as long as the curtain of water sprayed from the water seal component 2 can form a liquid seal with the inner wall of the sleeve.

[0038] As one possible embodiment, as shown in FIG. 1 and also referring to FIG. 2, the first sleeve 11 and the second sleeve 12 are both circular sleeves, and the radial sizes of both sleeves gradually decrease from top to bottom. Specifically, the first sleeve 11 includes, from top to bottom, a first cylindrical portion 113 and a first conical portion 114, and the second sleeve 12 includes, from top to bottom, a second cylindrical portion 123, a second conical portion 124, a third cylindrical portion 125, a third conical portion 126, and a fourth cylindrical portion 127. The taper of the first conical portion 114 is greater than that of the second conical portion 124. In the assembled state, the outer wall of the first conical portion 114 and the second conical wall (not shown) of the second conical portion 124 are sealed and locked together. More specifically, a seal ring 5 is provided on the first conical portion of the first sleeve 11, and the seal ring 5 is positioned so that it can abut against a second conical wall (not shown) of the second conical portion 124 when the first sleeve 11 and the second sleeve 12 are in the assembled position. This allows the first sleeve 11 to be sealed and connected to the second sleeve 12 when the first sleeve 11 and the second sleeve 12 are in the attached position. This installation method reduces the risk of water leaking out of the water curtain type air purifier 100 through the gap between the first sleeve 11 and the second sleeve 12. Furthermore, this installation method ensures that the outer wall of the first sleeve 11 and the inner wall of the second sleeve 12 are sealed and connected when the fan 4 is connected to the first exhaust port 122, thereby ensuring a sufficient air pressure difference between the first intake port 111 and the first exhaust port 122 and thereby ensuring the purification efficiency of the water curtain type air purifier 100.

[0039] The above installation method not only reduces the difficulty in designing and processing the housing component 1 and reduces the manufacturing cost of the housing component 1, but also improves the installation efficiency of the first sleeve 11 and the second sleeve 12. Furthermore, because the radial sizes of the first sleeve 11 and the second sleeve 12 gradually decrease from top to bottom, when water flows downward, it can flow along the gradually decreasing inner wall of the first sleeve 11. This prevents the water from directly falling from the first housing to the bottom end of the second housing, which would make the sound of water flowing louder, and therefore further reduces the sound of water flowing in the water curtain type air purifier 100.

[0040] Here, the first sleeve 11 and the second sleeve 12 described above in conjunction with Figure 1 are both stepped sleeves, but this is not limiting. In other embodiments of the present invention, the first sleeve 11 may be a conical sleeve whose radial size gradually decreases from top to bottom, and in this case, the second sleeve 12 may be a circular stepped sleeve whose radial size gradually decreases from top to bottom, but this is also not limiting. In other embodiments of the present invention, the first sleeve 11 may be a stepped sleeve whose radial size gradually decreases from top to bottom, and the second sleeve 12 may be a conical sleeve whose radial size gradually decreases from top to bottom, but this is also not limiting. In other embodiments of the present invention, the first sleeve 11 and the second sleeve 12 may both be conical sleeves whose radial size gradually decreases from top to bottom.

[0041] In one possible embodiment, as shown in FIG. 1, when the first sleeve 11 and the second sleeve 12 are both in the installed position, the second exhaust port 112 is located below the first exhaust port 122, and thus, the position at which water flows out from the second exhaust port 112 of the first sleeve 11 is located below the first exhaust port 122 of the second sleeve 12, thereby reducing the risk of water flowing out of the second sleeve 12 along with the flowing air, and thereby reducing the risk of water entering the room along with the flowing air.

[0042] As shown in FIG. 1 and also referring to FIG. 2, in one possible embodiment, the water curtain type air purifying device 100 further includes a fan 4 mounted on the first sleeve 11. When the first sleeve 11 is in the installed position, the fan 4 is located above the water sealing component 2 and can blow air onto the water sprayed from the water sealing component 2. Specifically, the fan 4 is connected to the inner wall of the first sleeve 11 by a connecting arm (not shown). With this installation method, when the fan 4 rotates, the air pressure at the first air intake port 111 can be made greater than the air pressure at the first air exhaust port 122. This allows air to flow from above the water curtain to below the water curtain due to the pressure difference, thereby purifying the air through the water curtain. Furthermore, the water sealing component 2 continuously sprays water in the form of a curtain onto the inner wall of the sleeve. In this way, the air is purified in an intercepted manner as it passes through the water curtain, thereby ensuring the purification efficiency of the water curtain type air purifying device 100.

[0043] As shown in FIG. 1 and also referring to FIG. 2 , one possible embodiment of the water seal component 2 includes a riser 22, a nozzle 21, and a pump 23. The riser 22 is disposed inside the housing component 1 and is coaxial with the first sleeve 11 and the second sleeve 12, extending downward from the upper end of the first sleeve 11 to the bottom end of the second sleeve 12. The nozzle 21 is connected to the end of the riser 22. The liquid outlet of the pump 23 is connected to the bottom end of the riser 22, and the liquid inlet of the pump 23 is connected to the water in the outer cylinder 10. The pump 23 provides water to the nozzle 21 through the riser 22, allowing the nozzle 21 to spray water onto the inner wall of the first sleeve 11 to form a water curtain. The water curtain can seal the passage formed between the nozzle 21 and the inner wall of the first sleeve 11, and thereby purify the air passing through the first air inlet 111.

[0044] 1, with reference also to FIG. 2, the flow guide structure 3 is a flow guide plate 31 provided on the outer wall of the standpipe 22, which extends spirally downward from the top of the standpipe 22 to the bottom of the standpipe 22. This installation method increases the flow guide distance of the flow guide plate 31, thereby further reducing the volume of water flow in the water curtain type air purifying device 100. Specifically, when the present invention is specifically implemented, the standpipe 22 is made of a hard material, which allows the flow guide plate 31 to be stably fixed to the outer wall of the standpipe 22.

[0045] Here, the riser 22 described above in conjunction with FIG. 1 is made of a hard material, but this is not limiting. In other embodiments of the present invention, the riser 22 may be made of a soft material, and such adjustments do not deviate from the principles of the present invention, as long as the flow guide plate 31 can be attached to the outer wall of the riser 22.

[0046] As shown in FIG. 1 and also referring to FIG. 2, in one possible embodiment, the flow guide structure 3 further includes at least partially inclined inner walls of the first sleeve 11 and the second sleeve 12. Specifically, the flow guide structure 3 further includes a first conical wall 32 of the first conical portion 114 and a third conical wall 33 of the third conical portion 126. In this way, as the water flows downward along the inner wall of the first sleeve 11, the first conical wall 32 can help the water adhere to the inner wall of the first sleeve 11 as much as possible, allowing the water to flow downward slowly along the inner wall of the first sleeve 11. This reduces the risk of the water escaping from the inner wall of the first sleeve 11 and falling freely downward, thereby reducing the noise of the water flow of the water curtain type air purifying device 100. Similarly, when water flows out of the first sleeve 11 and enters the second sleeve 12, and flows downward along the inner wall of the second sleeve 12, the water flowing downward along the inner wall of the second sleeve 12 can adhere to the inner wall of the second sleeve 12 as much as possible due to the action of the third conical wall 33, so that the water flows downward slowly along the inner wall of the second sleeve 12, thereby reducing the risk of the water escaping from the inner wall of the second sleeve 12 and falling freely downward, and thereby reducing the noise of the water flow of the water curtain type air purifier 100.

[0047] Preferably, the outer diameter of the flow guide plate 31 is equal to the inner diameter of the second exhaust port 112, or is smaller than the inner diameter of the second exhaust port 112, with the difference between the two being smaller than a predetermined first difference threshold, so that as much of the water flowing down along the inner wall of the first sleeve 11 as possible will flow into the flow guide plate 31 when it flows out of the second exhaust port 112, and the flow guide effect of the flow guide plate 31 will allow it to flow to the bottom of the second sleeve 12, thereby further reducing the volume of water flowing in the water curtain type air purifier 100.

[0048] Here, the first difference threshold may be determined by the designer through experience, experiment, calculation, etc. For example, the value of the first difference threshold may be set to 0.5 mm, 1 mm, or 1.5 mm. In this way, when water flows along the inner wall of the first sleeve 11 and flows out of the second exhaust port 112, the risk of water dripping from the gap between the flow guide plate 31 and the second exhaust port 112 to the bottom end of the second sleeve 12 can be reduced.

[0049] Preferably, in a specific implementation of the present invention, if the second sleeve 12 is a stepped sleeve, the inner diameter of the fourth cylindrical section 127 of the second sleeve 12 is set to be equal to or slightly larger than the outer diameter of the flow guide plate 31, with the difference between the two diameters being smaller than a predetermined second difference threshold, thereby reducing the risk of water dripping through the gap between the flow guide plate 31 and the inner wall of the second sleeve 12 to the bottom end of the second sleeve 12 and further reducing the volume of water flowing in the water curtain type air purifier 100.

[0050] Preferably, when the present invention is specifically implemented, the external cylinder 10 further includes a water inlet 101 and a water outlet 102, and the external cylinder 10 is connected to a water source through the water inlet 101 and to the outside of the water curtain type air purifying device 100 through the water outlet 102, thereby discharging water from the external cylinder 10 through the water outlet 102.

[0051] Although the technical solution of the present invention has been described above by combining the preferred embodiments shown in the drawings, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. As long as it does not deviate from the principle of the present invention, those skilled in the art can make equivalent modifications and substitutions to the relevant technical features, and the technical solutions after such modifications or substitutions all fall within the scope of protection of the present invention. [Explanation of symbols]

[0052] 100 Water curtain air purifier 10 External cylinder 101 Water inlet 102 Water outlet 1 Housing Components 11 First Sleeve 111 First air intake 112 Second exhaust port 113 First cylindrical part 114 First cone part 12 Second Sleeve 121 Second intake 122 First exhaust port 123 Second cylindrical part 124 Second cone part 125 Third cylindrical part 126 Third cone part 127 Fourth Cylinder 2 Water seal components 21 nozzles 22 Standpipe 23 Pump 3 Direction structure 31 Flow guide plate 32 First Conical Wall 33 Third Cone Wall 4 Fans 5 seal ring

Claims

1. A water curtain type air purifying device (100), comprising: An outer cylinder (10); a housing component (1) provided in the external cylinder (10) and having a first air inlet (111), wherein an outer wall of the housing component (1) and an inner wall of the external cylinder (10) form an annular first air outlet (122); a water sealing component (2) partially located inside the housing component (1) and communicating with the water at the bottom of the outer tube (10) so as to spray a curtain of water onto the inner wall of the housing component (1) to form a water seal with the inner wall of the housing component (1); and a water curtain type air purification device (100), characterized in that it includes a water guide structure (3) provided on the inner wall of the housing component (1) and / or the water sealing component (2), and configured to guide water flowing down along the inner wall of the housing component (1) and / or the water sealing component (2) to the bottom of the housing component (1), thereby reducing noise caused by the water flow in the air purification device (100).

2. The housing component (1) comprises: a first sleeve (11) having the first air intake port (111) and a second air exhaust port (112), wherein the first air intake port (111) is provided at a tip end of the first sleeve (11) and the second air exhaust port (112) is provided at a bottom end of the first sleeve (11); a second sleeve (12) having a second air intake port (121) and the first air exhaust port (122), wherein the second air intake port (121) is provided in a side wall of the second sleeve (12) and the first air exhaust port (122) is formed between an outer wall of the second sleeve (12) and an inner wall of the external cylinder (10); The water curtain type air purifying device (100) according to claim 1, characterized in that the first sleeve (11) is coaxially fitted into the second sleeve (12), and the first sleeve (11) and the second sleeve (12) are removably connected.

3. The water curtain type air purifying device (100) according to claim 2, characterized in that the radial size of the first sleeve (11) and / or the second sleeve (12) gradually decreases from top to bottom.

4. The water curtain type air purifying device (100) according to claim 2, wherein, in an assembled state, the second exhaust port (112) is located below the second intake port (121).

5. The water curtain type air purifying device (100) according to claim 2, characterized in that the first sleeve (11) and the second sleeve (12) are both stepped sleeves in which cylindrical and conical portions are alternately arranged, and in the conical portions, the diameters of the first sleeve (11) and the second sleeve (12) gradually decrease from top to bottom.

6. The water curtain type air purifying device (100) according to claim 2, further comprising a fan (4) provided within the first sleeve (11), wherein when the first sleeve (11) is in an installed position, the fan (4) is positioned above the water seal component (2) and is capable of blowing air onto the water curtain sprayed from the water seal component (2).

7. The water sealing component (2) a riser (22) provided inside the housing component (1), coaxially arranged with the first sleeve (11) and the second sleeve (12), and extending downward from the upper end of the first sleeve (11) to the bottom end of the second sleeve (12); a nozzle (21) communicating with the tip of the riser pipe (22); and a pump (23) having a liquid outlet connected to the bottom end of the riser pipe (22) and a liquid inlet connected to water in the outer cylinder (100), and supplying water to the nozzle (21) through the riser pipe (22) so that the nozzle (21) can spray water onto the inner wall of the first sleeve (11) to form a water curtain.

8. The water curtain type air purifying device (100) according to claim 7, characterized in that the flow guide structure (3) includes a flow guide plate (31) provided on the outer wall of the riser pipe (22), and the flow guide plate (31) extends spirally downward from the tip of the riser pipe (22) to the bottom end of the riser pipe (22).

9. The water curtain type air purifying device (100) according to claim 8, characterized in that the flow guide structure (3) further comprises at least partially inclined inner walls of the first sleeve (11) and / or the second sleeve (12).

10. 6. The water curtain type air purifying device (100) according to claim 5, wherein the first sleeve (11) comprises, from top to bottom, a first cylindrical portion (113) and a first conical portion (114); the second sleeve (12) comprises, from top to bottom, a second cylindrical portion (123), a second conical portion (124), a third cylindrical portion (125), a third conical portion (126), and a fourth cylindrical portion (127); the taper of the first conical portion (114) is greater than the taper of the second conical portion (124); and in an assembled state, the outer wall of the first conical portion (114) and the inner wall of the second conical portion (124) are sealed and engaged with each other.

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