Side water retaining structure and air purification device

Abstract

The present invention belongs to the technical field of household appliances, and particularly relates to a side water retaining structure and an air purification device. The side water retaining structure of the present invention is used for a water tank, the water tank has an air inlet, the side water retaining structure straddles the air inlet and is used to block at least part of the air inlet, and the side water retaining structure includes: a water retaining blade, at least part of the cross-section of the water retaining blade is inclined with respect to the air inlet, and the water retaining blade and the air inlet form a channel for the gas outside the water tank to enter the water tank. Through the above arrangement, the water curtain is blocked from passing through the gap between two adjacent blades, so that the water curtain will not be thrown out of the water tank, which is beneficial to reducing the waste of water in the water tank, facilitating the full contact between air and the water curtain, and beneficial to improving the efficiency of the air purification device.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and particularly relates to a side water retaining structure and an air purification device. Background Art

[0002] With the increasingly deteriorating environment, the problem of air pollution has attracted more and more extensive attention from people. Therefore, various air purifiers have emerged as the times require. An air purifier refers to a product that can adsorb, decompose or transform various air pollutants and can effectively improve the air cleanliness.

[0003] At present, the air purifiers used in households all purify the air by using the method of dry multi-layer filtration and adsorption (such as electrostatic adsorption, activated carbon adsorption, HEPA filtration, etc.). When such air purifiers are working, pollutants will directly accumulate on the filter screen of the filtering device. If accumulated for a long time, the pores on the filter screen will be blocked, affecting the air filtration effect, and the dust accumulated on the filter screen will become a breeding ground for bacteria and cause secondary pollution. Therefore, water-washing air purification products have emerged as the times require.

[0004] The existing water-washing air purification device includes a water tank and a water-washing component. The water-washing component is rotatably arranged in the water tank and is used for forming a water curtain. The water tank has an air inlet, and the dust-containing gas from the outside enters the water tank through the air inlet and is fully contacted with the water curtain to be purified. Among them, when the water-washing component rotates to form a water curtain, the water curtain may be thrown out of the water tank from the air inlet, resulting in waste of water in the water tank. Summary of the Invention

[0005] In order to solve the above problems in the prior art, that is, to solve the problem that the water curtain of the existing water-washing air purification device is thrown out of the water tank from the air inlet, resulting in waste of water in the water tank, the present invention provides a side water retaining structure and an air purification device. Among them, a side water retaining structure is used for the water tank. The water tank has an air inlet. The side water retaining structure straddles the air inlet and is used for blocking at least part of the air inlet. The side water retaining structure includes: a water retaining blade, at least part of the cross-section of the water retaining blade is inclined with respect to the air inlet, and the water retaining blade and the air inlet form a channel for the gas outside the water tank to enter the water tank.

[0006] In a preferred technical solution of the above side water retaining structure, at least two water retaining blades are provided, and there is a preset gap between two adjacent water retaining blades. An intercepting piece is connected to the water retaining blade, and the intercepting piece extends towards the adjacent water retaining blade.

[0007] In a preferred technical solution of the above side water retaining structure, the intercepting piece includes a second intercepting piece and a first intercepting piece. The first intercepting piece extends towards the downstream water retaining blade, and the second intercepting piece extends towards the upstream water retaining blade.

[0008] In the preferred technical solution of the above side water retaining structure, on two adjacent water retaining vanes, the second intercepting piece and the first intercepting piece, which are arranged on different water retaining vanes, have an overlapping part in the projection on the air inlet.

[0009] In the preferred technical solution of the above side water retaining structure, at least two second intercepting pieces are connected to the water retaining vane; at least one first intercepting piece connected to the upstream water retaining vane is located between the two second intercepting pieces connected to the downstream water retaining vane.

[0010] In the preferred technical solution of the above side water retaining structure, at least two first intercepting pieces are connected to the water retaining vane; at least one second intercepting piece connected to the downstream water retaining vane is located between the two first intercepting pieces connected to the upstream water retaining vane.

[0011] In the preferred technical solution of the above side water retaining structure, the air inlet of the water tank is configured as a long strip extending along the circumferential direction of the side wall of the water tank, and the water retaining vane is arranged along the length direction, width direction or diagonal direction parallel to the length of the long strip air inlet.

[0012] In the preferred technical solution of the above side water retaining structure, the projections of two adjacent water retaining vanes on the air inlet have an overlapping part.

[0013] In the preferred technical solution of the above side water retaining structure, in the axial direction of the water tank, the length between the two ends of the water retaining vane is greater than the length between the two ends of the air inlet.

[0014] An air purification device includes a water tank, a water washing component located in the water tank, and the side water retaining structure as described in any one of the above, and the side water retaining structure includes a water retaining vane.

[0015] Those skilled in the art can understand that for the side water retaining structure and the air purification device of the present invention, by providing a water retaining vane and inclining the water retaining vane with respect to the air inlet, the water retaining vane blocks at least part of the air inlet, so that the gas outside the water tank enters the water tank through the channel formed by the water retaining vane and the air inlet and contacts the water curtain in the water tank, thereby being purified. The water curtain in the water tank is blocked by the water retaining vane and will not be thrown out of the water tank, which is beneficial to reducing the waste of water in the water tank, facilitating the full contact between the air and the water curtain, and improving the efficiency of the air purification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional schematic diagram showing an air purification device;

[0017] Figure 2Shows a three-dimensional schematic diagram of a water washing section;

[0018] Figure 3 Shows Figure 2 An enlarged view at A;

[0019] Figure 4 Shows a schematic diagram of a water washing component for forming a water curtain;

[0020] Figure 5 Shows a cross-sectional view of a cylinder and a power section;

[0021] Figure 6 Shows a three-dimensional schematic diagram of a water tank and a side water retaining structure;

[0022] Figure 7 Shows a transverse three-dimensional cross-sectional view of a side water retaining structure;

[0023] Figure 8 Shows another transverse three-dimensional cross-sectional view of a side water retaining structure;

[0024] Figure 9 Shows a three-dimensional cross-sectional view of a water tank and a side water retaining structure;

[0025] Figure 10 Shows Figure 9 An enlarged view at B. Detailed implementation manners

[0026] First of all, those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios. For example, although the side water retaining structure of the present invention is described in combination with an air purification device, this is not a limitation. Other devices with water retaining use requirements can be configured with the side water retaining structure of the present invention, such as air humidifiers, etc.

[0027] Secondly, it should be noted that in the description of the present invention, terms such as "inner" and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0028] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] In Figure 1 the air purification device is further provided with a base body 5 for carrying the water tank 11, and the air inlet part 3 and the power part 2 can be arranged relying on the base body 5 so as to realize modular and integrated arrangement. In other words, the air inlet part 3 and the base body 5 can be formed as an integral part by means of molding. For example, the side wall or the bottom wall of the integral part serves as the air inlet part 3, and the bottom wall of the integral part is used to install the power part 2 and support the water tank 11.

[0030] The water tank 11 has an air inlet communicating with the air inlet part 3 and an air outlet communicating with the air outlet part 4. Exemplarily, the air outlet part 4 may include an air outlet hood, and the air outlet hood can cover the air outlet of the water tank 11. The purified gas enters the air outlet hood from the air outlet of the water tank 11, so that the purified gas can be guided to any required direction through the air outlet hood. For example, Figure 1 shows that the purified air discharged from the air outlet of the water tank 11 is guided to the Figure 1 left side, right side and rear side in

[0031] The following will separately describe each part of the air purification device in detail.

[0032] First, the water tank 11 will be described below.

[0033] Figure 2 shows a three-dimensional schematic diagram of a water washing part; as Figure 2 shown, the water tank 11 can be made of a transparent material, for example, it can be made of transparent plastic by molding. The water tank 11 can hold the air washing liquid for cleaning the air. The washing liquid can be clean water, but is not limited to clean water. For example, it can also be water mixed with a disinfectant. For the sake of simplicity of description, water will be used as an example in the following description, but this should not be regarded as a specific limitation on the protection scope.

[0034] As Figure 2 shown, the upper part of the water tank 11 is for gas flow, and the lower part of the water tank 11 is for holding water. The air inlet 111 of the water tank 11 can be arranged on the upper side wall of the water tank 11, and a side water retaining structure can be provided inside the air inlet as described below.

[0035] Continuing as Figure 2As shown, the top end of the water tank 11 can be open to serve as an air outlet, and the gas entering the interior of the water tank 11 can flow out from the opening at the top end of the water tank 11. An upper water-blocking structure 15 can be provided at the air outlet as described below.

[0036] It should be noted that the positions of the air inlet 111 and the air outlet can also be set differently from Figure 2 that shown. For example, the positions of the air inlet 111 and the air outlet can be swapped, or in some examples, the air inlet 111 and the air outlet can also be provided on the opposite side walls of the water tank 11. Hereinafter, the air purification device of this solution will be described by taking the air inlet 111 provided on the side wall of the water tank as an example. For other setting methods of the air outlet, those skilled in the art can refer to the following to obtain, and will not be elaborated here.

[0037] Continuing to refer to Figure 2 , the number of the air inlets 111 can be multiple, but only one can also be provided, and the shape and size of each air inlet 111 can be set according to actual needs. As Figure 2 shown, when there are multiple air inlets 111, these air inlets 111 can be evenly distributed along the circumferential direction of the side wall of the water tank 11 to evenly divide the gas, so that the gas entering the water tank 11 is evenly distributed.

[0038] It is worth noting that when the air inlet is provided on the side wall of the water tank 11 and the air outlet is located at the top of the water tank 11, the upper end surface of the air inlet should be lower than the plane where the water curtain formed by the water washing assembly is located, so that the dust-containing air entering the water tank 11 from the air inlet can only flow out from the air outlet of the water tank 11 after being washed by the water curtain. It should be noted that since water is affected by gravity, the plane where the water curtain is located here is a general reference. In principle, the upper end surface of the air inlet should be below the intersection line of the water curtain and the side wall.

[0039] As can be seen from the above, the lower part of the water tank 11 is used to hold water, so scale lines can be provided on the lower side wall of the water tank to facilitate users to observe and control the liquid level of the water tank 11. It is easy to understand that the water tank 11 can also be made of transparent material only in the part where the scale lines are provided, and the rest is made of non-transparent material, so that users can observe the water level in the water tank 11 through the scale lines of the transparent part. Referring to Figure 2 shown, the scale lines can include a minimum liquid level line, which can be shown as "0"; or can also include a maximum liquid level line, which can be shown as "max". It can be understood that the scale line marked with "max" is located below the air inlet.

[0040] To understand the inventive content of this solution more quickly, the water washing assembly will be described first below. Among them, the structure of the water washing assembly includes, but is not limited to, the following possible implementation manners:

[0041] In one possible implementation, Figure 4 A schematic diagram of a water washing component for forming a water curtain is shown. As Figure 4 shown, the water washing component can lift the water stored in the water tank 11 upward and spray the water toward the inner wall direction of the water tank 11. Specifically, the water washing component can include a hollow cylinder 12, and the lower end of the cylinder 12 is communicated with the lower end of the water tank 11. Exemplarily, the lower end of the cylinder 12 is provided with an opening. There is a gap between the lower end opening of the cylinder 12 and the bottom wall of the water tank 11, so that the water in the water tank 11 can enter the inside of the cylinder 12 from this gap. The power unit 2 can rotate the cylinder 12 around its own axis, so that the water entering the cylinder 12 gradually moves upward along the inner wall of the cylinder 12 under the action of the rotational force. A plurality of water throwing holes 121 are provided along the circumferential direction on the side wall of the cylinder 12 near the top end. These water throwing holes 121 are higher than the highest liquid level of the washing liquid contained in the water tank 11, so that the water lifted from the inner wall of the cylinder 12 is thrown out from the water throwing holes 121 and moves away from the cylinder 12 with a certain initial velocity (the initial velocity is the linear velocity at the position of the water throwing holes 121) and gradually approaches the inner wall of the water tank 11, thereby forming a water curtain for cleaning the gas entering from the air inlet. It should be noted that the plurality of water throwing holes 121 can be arranged in a circle uniformly or non-uniformly along the circumferential direction of the cylinder 12, and in some examples, multiple circles of water throwing holes 121 can also be arranged along the axis of the cylinder 12 to improve the water washing and purification effect.

[0042] In another possible implementation, the water washing component includes a water pipe, the water pipe can include a first end and a second end, the first end of the water pipe can extend into the water stored in the water tank to suck the water at the lower end of the water tank; the second end of the water pipe can extend to the upper end of the water tank. A water pump can be provided on the water pipe, and the water pump can make the water in the water tank flow from the first end to the second end. The water washing component further includes a rotatable disc-shaped member. After the water flowing down from the second end of the water pipe falls on the rotating disc-shaped member, it can be thrown out under the action of centrifugal force, thereby forming a water curtain.

[0043] In still another possible implementation, a hollow rotating body can also be used to replace the rotatable disc-shaped member. The upper end of the rotating body is provided with an opening, and a plurality of through holes are provided on the side wall of the rotating body. The water flowing out from the second end of the water pipe can enter the inside of the rotating body from the upper end opening of the rotating body and be thrown out from the through holes along the tangential direction of the rotating body, thereby forming a water curtain.

[0044] In still some other possible implementations, a rotating water curtain, a water pipe provided with a plurality of water outlets along the length direction, two oppositely arranged spray head structures, an atomizer, etc. can also be used to form a water curtain, a water curtain, a water mist, etc. in the water tank, so that the air entering the water tank can be washed and purified.

[0045] In summary, there are various water washing components for forming a water curtain with the water in the water tank 11. Hereinafter, the solution of this application will be introduced by taking the water washing component including the cylinder 12 and the power unit 2 driving the cylinder 12 to rotate as an example. The structures of other water washing components can be obtained with reference to this application and will not be elaborated here.

[0046] Continuing to refer to Figure 4 , the side wall of the cylinder 12 can be gradually inclined away from the axis of the cylinder 12 from top to bottom. That is to say, the cylinder 12 is arranged in a generally conical shape, with the small-diameter end of the cone at the bottom and the large-diameter end of the cone at the top, so as to facilitate the water to climb upward along the inner wall of the cylinder 12.

[0047] Continuing to refer to Figure 4 , the cylinder 12 can be divided into an upper section 122 and a lower section 123 connected to the lower end of the upper section 122, and the water throwing holes 121 can be arranged on the upper section 122. The upper and lower sections can be made into an integral part by an integral molding method such as injection molding to facilitate the structural stability of the cylinder 12. Of course, the upper and lower sections of the cylinder 12 can also be separate parts, and the two are assembled together by means such as screwing, screwing or welding. Moreover, the lower end of the upper section 122 and the upper end of the lower section 123 can be sleeved together. For example, the upper end of the lower section 123 can extend into the lower end of the upper section 122 to enhance the sealing between the upper section 122 and the lower section 123.

[0048] It should be noted that when the diameter of the lower end of the upper section 122 is larger than the diameter of the upper end of the lower section 123, a stepped portion can be used to connect the upper section 122 and the lower section 123. By forming a stepped portion between the upper and lower sections, a temporary storage area can be provided for the water to climb on the inner wall of the cylinder 12, which is beneficial to increasing the amount of water thrown out from the water throwing holes 121.

[0049] Optionally, Figure 5 shows a cross-sectional view of a cylinder and a power unit to illustrate the connection between the upper section 122 and the lower section 123. The upper section 122 may include an upper cylinder and an inner flange. The inner flange may include a radial section and an axial section. The radial section may abut against the upper end face of the outer flange mentioned below, and the axial section may be bent downward relative to the radial section.

[0050] The lower section 123 can be embedded within the flange. Exemplarily, the lower section 123 can include a lower cylinder body and an outer flange. The outer flange can be sleeved on the outside of the upper end of the lower cylinder body, and one end of the outer flange can be higher than the upper end of the lower cylinder body. The axial section of the inner flange abuts against the top end of the lower cylinder body, and the radial section of the inner flange abuts against the outer flange. Thus, the side of the axial section away from the radial section can be on the same curved surface as the lower cylinder body. This provides a gentle climbing surface for the droplets. Additionally, the outer flange and the inner flange cooperate with each other and block the gaps, which can facilitate improving the sealing performance between the upper section 122 and the lower section 123. Lower cylinder body Outer flange Outer flange Lower cylinder body Outer flange Lower cylinder body Lower cylinder body Upper cylinder body Inner flange Inner flange Radial section Axial section Radial section Outer flange Axial section Axial section Radial section Lower cylinder body Outer flange Inner flange

[0051] It should be noted that, in order to achieve the sealing performance between the upper section 122 and the lower section 123, it is also possible to set a sealing member between the lower section 123 and the upper section 122. The sealing member includes but is not limited to sealing rings, gaskets, etc.

[0052] Optionally, the angle between the side wall of the lower section 123 and the axis of the cylinder body 12 can be greater than the angle between the side wall of the upper section 122 and the side wall of the cylinder body 12. Water rises rapidly in the lower section 123. In the upper section 122, it is convenient for the water to break away from the supporting force or adhesion force of the inner wall of the upper section 122, and it is more convenient to be thrown out from the water throwing holes 121. Additionally, the change in the inclination angle of the upper section 122 can also be considered from the opening size of the air inlet. It can be understood that the direction of the initial velocity of the water thrown out from the water throwing holes 121 is related to the cross-section of the upper section 122, and the direction of the initial velocity affects the movement trajectory of the thrown-out water, and further affects the contact area between the thrown-out water and the gas. By reasonably setting one or more of the position of the water throwing holes 121 on the cylinder body 12, the rotation speed of the cylinder body 12, and the cross-section of the cylinder body 12 at the position where the water throwing holes 121 are located, the quality of the water curtain formed by the water washing assembly can be improved, thereby improving the air purification effect.

[0053] As Figure 5 shown, the upper end of the cylinder body 12 can be provided with an opening, and an upper cover 13 can be provided at the upper end of the cylinder body 12. The upper cover 13 can be used to close the upper end opening of the cylinder body 12. In addition, when the water in the cylinder body 12 rises to the upper end surface of the cylinder body 12 as the cylinder body 12 rotates, the water can be blocked by the upper end surface and fall, so that at least part of the water blocked by the upper end surface flows out from the water throwing holes 121, so as to increase the water output of the water throwing holes 121.

[0054] Optionally, the upper cover 13 may include a bottom wall and a side wall. The bottom wall of the upper cover 13 may abut against the upper end face of the cylinder body 12, and the side wall of the upper cover 13 may be sleeved on the outer side of the cylinder body 12. The lower end face of the side wall of the upper cover 13 is located above the water throwing hole 121 to block at least part of the water having an upward movement tendency. It can be understood that at least part of the initial velocity of the water thrown out from the water throwing hole 121 has an upward movement tendency, and the movement trajectory of this part of the water may be above the dynamic range of the gas, and this part of the water may not come into contact with the gas. By appropriately arranging a flange extending away from the cylinder body 12 on the side wall of the upper cover 13, the ability to intercept the water thrown out from the water throwing hole 121 and moving towards the top of the water tank 11 can be improved. The intercepted water may fall onto the outer side wall of the upper section 122 below the side wall of the upper cover 13 and may be thrown out towards the inner side wall of the water tank 11 under the action of centrifugal force as the upper section 122 rotates, so as to form a water curtain, thereby improving the air purification effect.

[0055] Alternatively, the cylinder body 12 and the upper cover 13 may be formed as an integral part by an integral molding method such as injection molding. At this time, an upper water blocking protrusion may be provided above the water throwing hole 121, and the upper water blocking protrusion extends from the outer side wall of the cylinder body 12 in a direction away from the cylinder body 12 to block at least part of the water having a tendency to move towards the top end of the water tank 11.

[0056] Alternatively, the upper end of the cylinder body 12 is open. The water throwing hole 121 of the cylinder body 12 is served by the opening at its top end, and the water throwing hole 121 may or may not be provided on its side wall. When the cylinder body 12 is driven to rotate, the water sucked into the cylinder body 12 climbs up along its side wall, and all or part of the climbing water may be thrown out from the top opening of the cylinder body 12 to form a water curtain.

[0057] Optionally, as Figure 4 and Figure 5As shown, a lower water retaining protrusion 14 may be provided below the water throwing holes 121. The lower water retaining protrusion 14 extends from the outer side wall of the cylinder 12 in a direction away from the cylinder 12 to block the water sprayed from the water throwing holes 121 and moving towards the bottom of the water tank 11. It can be understood that at least part of the initial velocity of the water thrown out from the water throwing holes 121 has a tendency to move towards the bottom of the water tank 11. On the one hand, the movement trajectory of this part of the water may be outside the movement range of the gas entering the water tank 11 from the air inlet, and this part of the water may not come into contact with the gas. By providing the lower water retaining protrusion 14, a part of the water moving towards the bottom of the water tank 11 can be intercepted. The intercepted water can accumulate above the lower water retaining protrusion 14 and be thrown out under the action of centrifugal force as the cylinder 12 rotates to form a water curtain, which is beneficial to improving the air purification effect. On the other hand, this part of the water is likely to fall from the air inlet on the side wall of the water tank 11 to the outside of the water tank 11. By providing the lower water retaining protrusion 14, water splashing out of the water tank 11 from the air inlet can be avoided to a certain extent.

[0058] As Figure 2 shown, an upper water retaining structure 15 for blocking the air outlet of the water tank 11 is provided at the air outlet of the water tank 11. By providing the upper water retaining structure 15, the water thrown out from the water throwing holes 121 can be blocked so that it will not splash out of the water tank 11 from the air outlet of the water tank 11. It should be noted that the water blocked by the upper water retaining structure 15 may include the water directly thrown out from the water throwing holes 121 and the water carried by the gas passing through the water curtain.

[0059] Exemplarily, Figure 3 is Figure 2 an enlarged view at A, as Figure 3 shown, the upper water retaining structure 15 includes a water absorbing member 151. The water absorbing member 151 can be made of a material that can block the passage of water droplets but allow the passage of gas, such as porous polymer materials in the prior art. In some examples, the water absorbing member 151 needs to be made of a material that blocks water in one direction. For example, it can be reticulated polyurethane foam, sponge, etc.

[0060] In addition, in order to facilitate the installation and support of the water absorbing member 151 and prevent the water absorbing member 151 from sagging excessively after absorbing water, the upper water retaining structure 15 may further include a support frame. The support frame can be provided in a hollow columnar shape, and the water absorbing member 151 can be installed inside the support frame. The support frame can be installed at the top of the water tank 11 by suitable means such as screw connection and snap connection. For example, a placement groove 112 can be provided at the top of the water tank 11, and the support frame can be embedded in the placement groove 112. Exemplarily, the bottom wall of the placement groove 112 can be used to support the bottom wall of the support frame, and the side wall of the support frame can be in interference fit with the side wall of the placement groove 112 to restrict the displacement of the support frame circumferentially.

[0061] The support frame can also be configured as a mesh structure, and the support frame of this mesh structure can be installed at the top of the water tank 11 in the same manner as the above-mentioned hollow columnar support frame. By configuring the support frame as a mesh structure, not only can the supporting force of the support frame on the water absorption member 151 be improved, but it will also not affect the passage of the purified gas. Optionally, the mesh openings of the mesh structure can be hexagonal to improve the stability of the support frame.

[0062] Optionally, the support frame can include a support section 152 and a covering section 153. The support section 152 can include a bottom wall and a side wall. The side wall of the support section 152 can be connected to the outer periphery of the bottom wall of the support section 152 and extend upward. The covering section 153 can include a top wall and a side wall. The side wall of the covering section 153 can be connected to the outer periphery of the top wall of the covering section 153 and extend downward. The side wall of the support section 152 can be sleeved outside the side wall of the covering section 153. The water absorption member 151 can be located in the accommodation space surrounded by the bottom wall of the support section 152, the side wall of the covering section 153, and the top wall of the covering section 153, so that the lower part of the water absorption member 151 is supported by the support section 152, the upper end of the water absorption member 151 is covered by the covering section 153 to define the upper part of the water absorption member 151, and the circumferential direction of the water absorption member 151 is defined by the side wall of the covering section 153 and the side wall of the support section 152 to maintain the structural shape of the water absorption member 151 and facilitate the installation of the water absorption member 151.

[0063] In addition, the support section 152 and / or the covering section 153 can have a certain elasticity to improve the sealing performance between the side wall of the support section 152 and the side wall of the covering section 153, so as to prevent water from splashing out of the water tank 11 between the side walls of the support section 152 and the covering section 153. In addition, the sealing performance can also be improved by providing a sealing member between the two, or it can also be achieved by the interference fit between the covering section 153 and the support section 152.

[0064] Continue to refer to Figure 3 When the covering section 153 and the support section 152 are in interference fit, an installation groove can be provided on the outer periphery of the top wall of the covering section 153, and an installation protrusion can be connected to the upper end of the side wall of the support section 152. The installation protrusion can be fitted and connected to the installation groove. Exemplarily, the installation protrusion can be oriented in the axial direction of the support section 152, and the lower end surface of the installation protrusion can be abutted against the bottom wall of the installation groove for installation to prevent the upper end of the covering section 153 from moving. Optionally, the number of installation grooves can be one or more, and multiple installation grooves can be evenly distributed on the outer periphery of the covering section 153.

[0065] Figure 6 Shows a three-dimensional schematic diagram of a water tank 11 and a side water retaining structure 16, as Figure 6As shown, a side water baffle structure 16 may be provided at the air inlet of the water tank 11 to prevent water from splashing out of the air inlet to the outside of the water tank 11. The side water baffle structure 16 may be located inside the water tank 11 and can block the air inlet. For example, the side water baffle structure 16 may be connected to the inner wall of the water tank 11 and be located between the cylinder 12 and the inner wall of the water tank 11. It should be understood that the side water baffle structure 16 provided at the air inlet cannot block the normal entry of the air outside the water tank 11 into the water tank 11 through the air inlet. Several implementation manners of the side water baffle structure 16 are briefly introduced below, but this is not a specific limitation on the side water baffle structure 16:

[0066] In one possible implementation manner, Figure 7 is a transverse partial sectional view of a side water baffle structure 16, Figure 8 is another transverse perspective view of the side water baffle structure 16, as Figures 6 - 8 shown, the side water baffle structure 16 may include at least two water baffle blades 161, and there is a gap between two adjacent water baffle blades 161. In a cross-section perpendicular to the axial direction of the water tank 11, one end of the water baffle blade 161 facing the axial direction of the water tank 11 and the end of the water baffle blade 161 away from the axial direction of the water tank 11 are located in different radial directions of the cross-section.

[0067] For the sake of description, it is convenient to take the axial direction of the water tank 11 as the height direction of the water baffle blade 161, and the circumferential direction of the water tank 11 as the width direction of the water baffle blade 161. The cross-section of the water tank 11 is the cross-section obtained by using a plane parallel to the upper end face of the water tank 11 to cut the water baffle blade 161, and the length direction of this cross-section is the length direction of the water baffle blade 161.

[0068] It can be understood that from the axis of the water tank 11 to the edge of the water tank 11, at least part of the cross-section of the water baffle blade 161 may be inclined towards one side, so that when looking from the outside of the water tank 11 into the water tank 11, the end of the water baffle blade 161 away from the cylinder 12 can block the end of the water baffle blade 161 close to the cylinder 12, increasing the probability of water droplets hitting the side wall of the water baffle blade 161, so as to intercept the scattered water droplets and prevent the water droplets from flying out of the air inlet.

[0069] In addition, two adjacent water baffle blades 161 may be inclined in the same direction ( Figures 6 - 8Taking the case where the inclination directions of the two water baffle blades 161 are the same as an example (shown in the figure), they can also be inclined in different directions. It should be noted that the inclination direction of the water baffle blade 161 refers to the position direction of the end of the water baffle blade 161 far from the axis of the water tank 11 relative to the end of the water baffle blade 161 close to the axis of the water tank 11. When the inclination directions of the two water baffle blades 161 are the same, the distance between the two water baffle blades 161 is relatively large, facilitating air circulation, and the structure is relatively simple, which is beneficial to design and processing; when the inclination directions of the two water baffle blades 161 are different, the distance between the two water baffle blades 161 is relatively small, which is conducive to blocking water droplets from passing through and can improve the water blocking effect.

[0070] In summary, the side water blocking structure 16 is provided with at least two water baffle blades 161, and there is a distance between adjacent two water baffle blades 161, and at least a part of the water baffle blade 161 is gradually inclined toward one side from the axis of the water tank 11 to the edge of the water tank 11, so that the air entering from the air inlet of the water tank 11 passes through the gap between the two water baffle blades 161 and enters the water tank 11, and then forms a water curtain with the water curtain passing through the water curtain assembly, thereby being purified. In addition, the water baffle blade 161 inclined toward one side can block water droplets from passing through the gap between adjacent two water baffle blades 161, so that the water droplets will not splash out of the water tank 11, which is beneficial to avoiding affecting other components and also helps to reduce the waste of water in the water tank 11.

[0071] Optionally, the inclination direction of the water baffle blade 161 can be opposite to the rotation direction of the cylinder 12 to improve the water blocking effect of the water baffle blade 161. For example, as Figure 7 and Figure 8 shown, when the cylinder 12 is configured to throw water counterclockwise, the inclination direction of the water baffle blade 161 can be clockwise.

[0072] Optionally, the distance between adjacent two water baffle blades 161 at the end close to the axis of the water tank 11 can be greater than the distance between adjacent two water baffle blades 161 at the end far from the axis of the water tank 11. That is to say, the water baffle blade 161 can include a first end and a second end, the first end is close to the axis of the water tank 11, and the second end is far from the axis of the water tank 11. The distance between the first ends of adjacent two water baffle blades 161 can be greater than the distance between the second ends of these two water baffle blades 161, so as to better intercept water droplets and avoid water droplets from splashing outside the water tank 11.

[0073] It should be noted that the width of a water retaining blade 161, that is, the projection length of the water retaining blade 161 along the circumferential direction of the water tank 11, can be equal to or greater than the distance between the first ends of two adjacent water retaining blades 161. That is to say, the second end of a water retaining blade 161 can block the first end of the next water retaining blade 161, that is, the second end of the water retaining blade 161 located upstream can block the first end of the water retaining blade 161 located downstream. The downstream water retaining blade 161 here refers to that along the inclination direction of the water retaining blade 161 as the indication direction, the first water retaining blade 161 along the downstream of the current water retaining blade 161 in this indication direction is the downstream water retaining blade 161 (along the inclination direction of the water retaining blade 161, the front is upstream and the rear is downstream). Specifically, as shown in the first water retaining blade 1611 and the second water retaining blade 1612 in the figure, the second water retaining blade 1612 is the downstream water retaining blade 161 of the first water retaining blade 1611. When looking into the water tank 11 from the outside of the water tank 11, the first end of the second water retaining blade 1612 is blocked by the second end of the first water retaining blade 1611.

[0074] The following introduces several ways to achieve the second end of the upstream water retaining blade 161 blocking the first end of the downstream water retaining blade 161, but these implementation methods are not restrictive:

[0075] In a possible implementation method, as Figures 7 - 8 shown, an intercepting piece is connected to the water retaining blade 161, and the intercepting piece extends towards the adjacent water retaining blade 161. The intercepting piece may include a first intercepting piece 163, and the first intercepting piece 163 extends towards the downstream water retaining blade. The end of the water retaining blade 161 close to the axis of the water tank 11 is the first end of the water retaining blade 161, and the end of the first intercepting piece 163 away from the water retaining blade 161 is the second end of the water retaining blade 161. In this way, by setting the first intercepting piece 163 to block the first end of the next water retaining blade 161, not only the interception efficiency is improved, but also the length of the water retaining blade 161 can be reduced, making the overall structure more compact.

[0076] In another possible implementation method, the intercepting piece may not be provided, and the width of the water retaining blade 161 can be wide enough so that its width can block the first end of the next water retaining blade 161. With such a setting, the structure of the water retaining blade 161 can be simple and easy to process.

[0077] As Figure 6 and Figure 7As shown, the side water baffle structure 16 may further include a retaining ring 162. The retaining ring 162 is located between two adjacent water baffle vanes 161, and the projection of the water throwing hole 121 is located within the retaining ring 162 to intercept the water droplets thrown out from the water throwing hole 121. Additionally, the retaining ring 162 can also connect several water baffle vanes 161 together, thereby strengthening the connection between two adjacent water baffle vanes 161 and improving the stability and structural strength of the side water baffle structure 16. It should be noted that in the height direction of the water baffle vane 161, there is a certain distance between the upper and lower end faces of the retaining ring 162 and the upper and lower end faces of the water baffle vane 161. That is to say, the retaining ring 162 is connected to a position approximately in the middle of several water baffle vanes 161. Of course, in some examples, the retaining ring 162 can be arranged at a position slightly above the middle of the water baffle vane 161 to reduce the obstruction of the retaining ring 162 to the air intake of the water tank 11.

[0078] Optionally, as Figure 8 shown, the above-mentioned retaining ring 162 can be replaced by a second intercepting piece 166 arranged between two adjacent water baffle vanes 161. Exemplarily, the second intercepting piece 166 extends from the downstream water baffle vane 161 towards the upstream water baffle vane 161. On two adjacent water baffle vanes 161, the second intercepting piece 166 and the first intercepting piece 163, which are arranged on different water baffle vanes 161, have an overlapping part in the projection on the air inlet. That is to say, the end of the second intercepting piece 166 on the downstream water baffle vane 161 away from the water baffle vane 161 can block the end of the first intercepting piece 163 on the upstream water baffle vane 161 away from the water baffle vane 161, so that there is an overlapping part between the second intercepting piece 166 and the first intercepting piece 163 between the upstream water baffle vane 161 and the downstream water baffle vane 161, facilitating the interception of the water droplets splashing towards the air inlet position. Exemplarily, the two sides in the thickness direction of one water baffle vane 161 can be respectively connected with a second intercepting piece 166 and a first intercepting piece 163.

[0079] In addition, the water baffle vane 161 is at least connected with two second intercepting pieces 166; at least one first intercepting piece 163 connected to the upstream water baffle vane 161 is located between the two second intercepting pieces 166 connected to the downstream water baffle vane 161.

[0080] The water baffle vane 166 is at least connected with two first intercepting pieces 163; at least one second intercepting piece 166 connected to the downstream water baffle vane is located between the two first intercepting pieces 163 connected to the upstream water baffle vane 161. In this way, the traveling distance of the gas between two adjacent water baffle vanes 161 can be increased, and then the contact area between the gas and the thrown liquid droplets can be increased. Additionally, the upper and lower intercepting pieces block each other, effectively blocking the thrown liquid droplets.

[0081] Exemplarily, at least two second intercepting pieces 166 and at least two first intercepting pieces 163 may be connected to the water blocking blade. Figure 8 Taking the example that there are two first intercepting blades 163 and two first intercepting pieces 163 on one water blocking blade 161. Among them, the second end of the water blocking blade 161 may be connected with a first intercepting piece 163 to block the first end of the downstream water blocking blade 161; the first end of the water blocking blade 161 may be connected with a second intercepting piece 166 to increase the travel distance of the gas between two adjacent water blocking blades 161, thereby increasing the contact area between the gas and the droplets thrown out. In addition, the second intercepting piece 166 may also block each other with the first intercepting piece 163 of the downstream water blocking blade 161, thereby blocking the droplets thrown out.

[0082] In addition, the middle part of the water blocking blade may also be connected with a second intercepting piece 166 and a first intercepting piece 163, and the first intercepting piece 163 located in the middle of the water blocking blade 161 is arranged closer to the second end of the water blocking blade 161 than the second intercepting piece 166.

[0083] Among them, multiple second intercepting pieces 166 connected to the first end of the water blocking blade 161 may be located on the same circumference, so as to correspond to the trajectory of the water thrown out by the water throwing holes 121, thereby improving the water blocking effect.

[0084] Optionally, as Figures 6 - 8 shown, in the axial direction of the water tank 11, both ends of the water blocking blade 161 may extend beyond both ends of the air inlet, that is, the upper end of the water blocking blade 161 extends upward from the upper end surface of the air inlet by a part, and the lower end of the water blocking blade 161 extends downward from the lower end surface of the air inlet by a part. In other words, in the axial direction of the water tank 11, the length between both ends of the water blocking blade 161 may be greater than the length between both ends of the air inlet. It can be understood that the water droplets intercepted by the water blocking blade 161 or the retaining ring 162 or the second intercepting piece 166 or the first intercepting piece 163 will flow down along the surface of the water blocking blade 161 or the retaining ring 162 or the first intercepting piece 163 or the second intercepting piece 166 to the bottom of the water tank 11. It should be understood that the lower part of the water blocking blade 161 needs to be lower than the air inlet of the water tank 11 to prevent water from flowing out of the water tank 11; moreover, since the water blocking blade 161 will partially block the air inlet of the water tank 11 to intercept the water droplets splashing towards the air inlet of the water tank 11, there needs to be a gap between two adjacent water blocking blades 161 or between the water blocking blade 161 and the inner wall of the air inlet.

[0085] Optionally, the part of the lower end of the water baffle blade 161 that extends beyond the air inlet may have an inclined surface 1613, which is inclined downward from the edge of the water tank 11 towards the axis direction of the water tank 11. So that the air entering from the air inlet of the water tank 11 is guided by this inclined surface 1613 and moves towards the bottom of the water tank 11, thus can first contact the water at the bottom of the water tank 11, and can be purified accordingly through this surface contact.

[0086] Optionally, as Figures 6 - 8 shown, the inclined part of the water baffle blade 161 may have a certain arc. That is to say, the air entering from the air inlet has to pass through the gap between two adjacent water baffle blades 161 first and then enter the water tank 11. The gap between two adjacent water baffle blades 161 has a guiding effect on the air, so it is set as an arc to facilitate the air flow and reduce the resistance of the water baffle blade 161 to the air.

[0087] Figure 9 shows a three-dimensional sectional view of a water tank 11 and a side water baffle structure 16, Figure 10 shows Figure 9 an enlarged view at D, as Figure 6 、 Figure 9 and Figure 10 shown, the side water baffle structure 16 may further include a mounting cover 164. The upper end of the water baffle blade 161 is connected to the mounting cover 164, and the mounting cover 164 is detachably connected to the inner side wall of the water tank 11. By providing the mounting cover 164, the tops of all the water baffle blades 161 can be connected together to increase the overall structural strength of the side water baffle structure 16. In addition, by assembling multiple water baffle blades 161 into one body through the mounting cover 164, it is convenient for the assembly of the side water baffle structure 16.

[0088] The following introduces several optional connection methods between the mounting cover 164 and the inner side wall of the water tank 11, but is not limited to the following implementation methods:

[0089] Optionally, as Figure 9 and Figure 10 shown, the inner wall of the water tank 11 is provided with a limiting groove 113, the circumferential direction of the limiting groove 113 straddles a part of the air inlet, the mounting cover 164 is connected with a limiting flange 1642, and the limiting flange 1642 is cooperatively connected to the limiting groove 113. Exemplarily, the limiting groove 113 includes a bottom wall and two side walls. The limiting flange 1642 can be inserted into the limiting groove 113 from top to bottom, and one side of the limiting flange 1642 abuts against the side wall of the limiting groove 113 close to the water washing part 1. In addition, the edge of the mounting cover 164 away from the water washing part 1 can abut against the inner wall of the water tank 11 (the other side wall of the limiting groove 113). Based on the above, the displacement of the mounting cover 164 in the lateral direction of the water tank 11 can be restricted.

[0090] AsFigure 6 As shown, the side wall of the water tank 11 may include an arc portion and a vertical portion, and the air inlet may be opened on the arc portion of the water tank 11. It can be understood that since the cylinder 12 rotates, the water throwing holes 121 provided thereon also move circumferentially along with the cylinder 12. By providing the arc portion, the water ejected from the water throwing holes 121 can contact more air. As Figure 9 and Figure 10 shown, the limit groove 113 may be provided on the arc portion, and the limit flange 1642 is correspondingly provided in an arc shape with a matching shape. In this way, the mounting cover 164 can be restricted from moving circumferentially.

[0091] By adopting the structure in which the limit flange 1642 and the limit groove 113 cooperate, not only are fasteners not required, but also the installation is convenient and fast. Of course, the water tank 11 and the mounting cover 164 can also be fixed by fasteners, where the fasteners include but are not limited to bolts, screws, fixing pins, etc.

[0092] Continue to refer to Figure 6 , a diversion groove 1641 may also be provided on the upper end surface of the mounting cover 164. The diversion groove 1641 is communicated with the inside of the water tank 11, so that the water falling on the top end of the mounting cover 164 can flow back to the bottom of the water tank 11 under the action of the diversion groove 1641. In addition, Figure 3 shows Figure 2 an enlarged view at A, as Figure 2 、 Figure 3 and Figure 6 shown, a guiding groove 117 may also be provided on the inner wall of the water tank 11. The guiding groove 117 may extend along the vertical direction of the water tank 11, so that when the thrown water falls into the gap between the mounting cover 164 and the inner wall of the water tank 11, the water can flow down along the guiding groove 117 to the bottom of the water tank 11.

[0093] Optionally, as Figure 7 and Figure 8 shown, the side water retaining structure 16 further includes a reinforcing flange 165. The lower end of the water retaining blade 161 is connected to the reinforcing flange 165, so as to strengthen the connection strength between the water retaining blades 161 and improve the strength and stability of the water retaining structure. Among them, reinforcing ribs 1651 are provided on the reinforcing flange 165, and the reinforcing ribs 1651 extend in the axial direction of the water tank 11. The reinforcing ribs 1651 may be provided at the lower end of the reinforcing flange 165 to facilitate the collection of water droplets intercepted by the water retaining blades 161 and the retaining ring 162.

[0094] Continue to refer to Figure 7 and Figure 8, the side water retaining structure 16 may further include a vertical wall 1643. The vertical wall 1643 may extend from the position of the mounting cover 164 towards the bottom of the water tank 11 and may intersect with the reinforcing flange 165 to enhance the strength of the side water retaining structure 16. One side of the vertical wall 1643 may be fixed to the adjacent water retaining blade 161 to improve the integrity of the structure.

[0095] Next, the power unit 2 will be described.

[0096] In the following text, Figure 5 taking the structure shown as an example, the power unit 2 and its cooperation mode with the cylinder 12 will be explained. That is to say, in the following text, taking the upper cover 13 being provided above and the side wall of the upper cover 13 being sleeved outside the cylinder 12 as an example, the situation where the power unit 2 drives the cylinder 12 to rotate will be described. However, it should be understood that the structure of the cylinder 12 is not limited to Figure 5 the structure form in, and it can also be other structures mentioned above.

[0097] As Figure 5 shown, the power unit 2 may include a rotating shaft 21, a speed reducer, and a motor 22. The motor 22 may be electrically connected to an external power supply. The motor 22 includes a motor shaft 221 and a motor body 222. The base 5 may include a base 51. The speed reducer may include a first helical gear 23 rotatably arranged on the base 51 and a second helical gear 24 rotatably connected to the bottom of the water tank 11. The first helical gear 23 and the second helical gear 24 mesh with each other, and the second helical gear 24 may be located above the first helical gear 23. It can be understood that the structural form of the speed reducer may include but is not limited to the above structure. By adopting a separable cooperation mode such as the first helical gear 23 and the second helical gear 24, it is convenient to disassemble the water tank 11 and the base 51, which is beneficial to the cleaning and / or water filling of the water tank 11. Specifically, when it is necessary to separate the water tank 11 and the base 51, only the first helical gear 23 and the second helical gear 24 need to be separated.

[0098] In addition, the motor shaft 221 may be coaxially connected to the first helical gear 23. The rotating shaft 21 includes a first end and a second end. The first end of the rotating shaft 21 may be coaxially connected to the second helical gear 24, and the second end of the rotating shaft 21 may be connected to the cylinder 12. Referring to the figure, the first end of the rotating shaft 21 may be the lower end of the rotating shaft 21, and the second end of the rotating shaft 21 may be the upper end of the rotating shaft 21. It can be understood that after the motor 22 is powered on and started, the motor shaft 221 of the motor 22 can drive the first helical gear 23 to rotate. The first helical gear 23 can drive the second helical gear 24 to rotate, and then drive the rotating shaft 21 connected to the second helical gear 24 to rotate, so that the cylinder 12 connected to the rotating shaft 21 rotates, realizing the functions of sucking water, lifting water, and spraying water from the water tank 11 by the cylinder 12.

[0099] As Figure 5As shown, the lower end of the rotating shaft 21 can be connected to the second bevel gear 24, and the rotating shaft 21 can sequentially pass through the insertion opening 1151 and the installation recess 114 from bottom to top and be connected to the upper end of the cylindrical body 12. That is to say, the rotating shaft 21 can be rotatably installed in the insertion opening 1151 and the installation recess 114, and the installation recess 114 or the insertion opening 1151 can radially limit the rotating shaft 21 to prevent the rotating shaft 21 from being bent and damaged. Exemplarily, a bearing 25 can be provided in the insertion opening 1151, and the rotating shaft 21 can be rotatably arranged inside the insertion opening 1151 through the bearing 25, and the bearing 25 can play a role in radially supporting the rotating shaft 21. Optionally, the limiting plate 1152 can divide the insertion opening 1151 into a first area and a second area arranged side by side in the up-down direction. The second bevel gear 24 can be located in the first area below the limiting plate 1152, and the bearing 25 can be located in the second area above the limiting plate 1152 to facilitate modular installation.

[0100] Optionally, an oil seal 27 and a gasket 26 can be provided in the second area. The gasket 26 can be located between the bearing 25 and the oil seal 27. The gasket 26 can isolate the oil seal 27 and the bearing 25 and prevent the rolling elements of the bearing 25 from slipping out. The oil seal 27 can seal the rotating shaft 21 to prevent dust, liquid, etc. from entering.

[0101] Optionally, a bearing 25 can also be provided at the upper end of the installation recess 114 to radially support the rotating shaft 21. The gasket 26 and the oil seal 27 mentioned above can also be provided at the upper end of the installation recess 114.

[0102] It should be noted that the bearings 25, gaskets 26, and oil seals 27 on the installation recess 114 and the insertion opening 1151 can be symmetrically arranged.

[0103] As Figure 5 shown, a connecting member 28 can be provided between the side wall of the upper end of the rotating shaft 21 and the inner wall of the cylindrical body 12 to connect the rotating shaft 21 and the cylindrical body 12 together through the connecting member 28. The connecting member 28 can be provided above the installation recess 114 (as Figure 5 shown). The connecting member 28 can include a sleeve 281 and a connecting piece 282. The sleeve 281 can be sleeved on the outside of the first end of the rotating shaft 21, and both sides of the connecting piece 282 are respectively connected to the outside of the sleeve 281 and the inner wall of the cylindrical body 12. In this way, the connection between the rotating shaft 21 and the cylindrical body 12 can be realized. To improve the sealing performance, the sleeve 281 can be integrally formed with the bottom wall of the water tank 11 by means such as injection molding to form an integral part.

[0104] The connecting piece 282 can be provided with one or more. When there are multiple connecting pieces 282, the multiple connecting pieces 282 can be evenly distributed in the circumferential direction of the rotating shaft 21 to improve the connection strength between the connecting member 28 and the cylinder body 12. At the same time, the connecting piece 282 can also play a supporting role for the cylinder body 12 to improve the structural strength of the cylinder body 12.

[0105] Continue to refer to Figure 5 , the top end of the rotating shaft 21 can be connected to the upper cover 13 to drive the upper cover 13 to rotate simultaneously. Exemplarily, an installation block can be provided on the inner wall of the upper cover 13, the installation block extends downward, and the upper end of the rotating shaft 21 can be threadedly connected to the installation block.

[0106] In addition, as Figure 5 shown, a reinforcing rib can be provided between the outer side wall of the installation block and the upper cover 13 to support the installation block and strengthen the strength of the installation block. Exemplarily, one end of the reinforcing rib is connected to the outer side wall of the installation block, and the other end of the reinforcing rib extends towards the inner wall of the upper cover 13 and is connected to the inner wall of the upper cover 13. Optionally, the reinforcing rib can be arranged around the circumference of the installation block to enhance the circumferential strength of the installation block.

[0107] Optionally, as Figure 5 shown, a ring-shaped protrusion can be connected to the bottom wall of the upper cover 13, and the ring-shaped protrusion can extend towards the bottom end of the cylinder body 12. There is a gap between the ring-shaped protrusion and the side wall of the upper cover 13, and the top end of the side wall of the cylinder body 12 can extend into this gap.

Claims

1. A side water retaining structure for a water tank, the water tank having an air inlet, characterized in that, The side water-blocking structure straddles the air inlet and is used to block at least part of the air inlet. The side water-blocking structure includes: Water-blocking blades, at least part of the cross-section of the water-blocking blades is inclined with respect to the air inlet, and the water-blocking blades and the air inlet form a channel for the gas outside the water tank to enter the water tank; in a cross-section perpendicular to the axial direction of the water tank, one end of the water-blocking blade facing the axial direction of the water tank and the end of the water-blocking blade away from the axial direction of the water tank are located in different radial directions of the cross-section; There are at least two of the water-blocking blades, and there is a preset gap between two adjacent water-blocking blades. An intercepting piece is connected to the water-blocking blade, and the intercepting piece extends towards the adjacent water-blocking blade; The side water-blocking structure further includes a retaining ring, the retaining ring is used to connect a plurality of the water-blocking blades together, the retaining ring is located between two adjacent water-blocking blades, and the projection of the water-throwing hole is located within the retaining ring to intercept the water droplets thrown out from the water-throwing hole.

2. The side water retaining structure according to claim 1, characterized in that The intercepting piece includes a first intercepting piece, and the first intercepting piece extends towards the downstream water-blocking blade.

3. The side water retaining structure according to claim 2, wherein At least two of the first intercepting pieces are connected to the water-blocking blade.

4. The side water retaining structure according to claim 1, characterized in that, The air inlet of the water tank is configured as a long strip extending along the circumferential direction of the side wall of the water tank, and the water-blocking blade is arranged along the length direction, width direction or diagonal direction of the long-strip air inlet.

5. The side water retaining structure according to claim 1, characterized in that The projections of two adjacent water-blocking blades on the air inlet have an overlapping part.

6. The side water retaining structure according to claim 1, characterized in that, In the axial direction of the water tank, the length between the two ends of the water-blocking blade is greater than the length between the two ends of the air inlet.

7. An air purification device, characterized in that, It includes a water tank, a water washing assembly located in the water tank, and the side water-blocking structure according to any one of claims 1-6, and the side water-blocking structure includes water-blocking blades.

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