Air purifying device from the lower side

Abstract

The present application belongs to the field of air purification, and particularly relates to an air purification device with air inlet from the lower side. The air purification device with air inlet from the lower side comprises a base body with an air inlet facing downward; a water tank arranged in the base body, the base body being provided with an air inlet channel, the water tank being provided with an air inlet and an air outlet, the air inlet of the water tank being arranged on the side wall of the water tank, and the air inlet of the water tank being communicated with the air inlet channel; a water curtain assembly arranged in the water tank and used for cleaning the gas flowing from the air inlet of the water tank to the air outlet of the water tank by using the water in the water tank; and a fan used for driving the gas outside the water tank to enter the water tank from the air inlet of the water tank. Through the above arrangement, the air is inhaled from the lower side, the internal space of the device is reasonably utilized, and the space occupied by the device is reduced.

Description

Technical Field

[0001] This invention belongs to the field of air purification technology, specifically relating to an air purification device that draws air in from the bottom. Background Technology

[0002] An air purifier is a product that can adsorb, decompose, or transform various air pollutants, effectively improving air cleanliness.

[0003] Currently, air purifiers used in homes employ dry, multi-layer filtration adsorption methods (such as electrostatic adsorption, activated carbon adsorption, and HEPA filtration) to purify the air. When these air purifiers are working, pollutants accumulate directly on the filter screen. Over time, this accumulation can clog the pores, affecting the air filtration effect. Furthermore, the dust accumulated on the filter screen can become a breeding ground for bacteria, causing secondary pollution. Therefore, water-washable air purifiers have emerged.

[0004] Existing water-washing air purification devices include a water tank and a water curtain assembly. The water curtain assembly is located inside the water tank and, driven by a power unit, forms a water curtain from the water in the tank. Dust-laden gas enters the water tank and comes into contact with the water curtain, thus being purified. The purified gas is then discharged from the air outlet, thereby achieving the purification of dust-laden gas and improving the surrounding air quality.

[0005] Among them, the existing water-washing air purification devices adopt a side air intake method, that is...

[0006] Dust-laden gas enters the water tank from the side of the device. During installation, a gap needs to be left on the air inlet side of the device, which increases the installation space required for the device. Summary of the Invention

[0007] To address the aforementioned problems in the prior art, namely the large installation space required by existing devices, this invention provides an air purification device with bottom-intake airflow, comprising: a base having a downward-facing air inlet; a water tank disposed within the base, the base having an air intake channel, the water tank having an air inlet and an air outlet, the air inlet of the water tank being located on a side wall of the water tank and communicating with the air intake channel; a water curtain assembly disposed within the water tank and used to clean the gas flowing from the air inlet to the air outlet of the water tank using water from the water tank; and a fan for driving gas outside the water tank to enter the water tank through the air inlet.

[0008] In the preferred embodiment of the air purification device with air intake from the bottom, the air outlet of the water tank is located on the side wall of the water tank, and the air outlet of the water tank is higher than the air inlet of the water tank.

[0009] In the preferred embodiment of the air purification device with bottom air intake described above, the top of the water tank is open, and the air purification device with bottom air intake also includes a cover, which is used to cover the open of the water tank and to guide the gas in the water tank to flow to the air outlet of the water tank.

[0010] In the preferred embodiment of the air purification device that draws air from the bottom, the cover is provided with a guide recess, the guide recess has an upward opening, and the cross-section of at least a portion of the guide recess gradually decreases from top to bottom.

[0011] In the preferred embodiment of the air purification device with air intake from the bottom, an air outlet hood is further provided on the outside of the water tank. The air outlet hood has an air inlet and an air outlet. The air inlet of the air outlet hood is connected to the air outlet of the water tank. From the air inlet of the air outlet hood to the air outlet of the air outlet hood, at least a portion of the air outlet hood is gradually expanded outward in the axial direction of the water tank.

[0012] In the preferred embodiment of the air purification device with air intake from the bottom, at least a portion of the air outlet hood is gradually tapered in the circumferential direction of the water tank from the air inlet to the air outlet.

[0013] In the preferred embodiment of the air purification device that draws air from the bottom, the air inlet of the substrate is provided with a primary filter device, which is used to adsorb some impurities in the filtered gas.

[0014] In the preferred embodiment of the air purification device that draws air from the bottom, the bottom end of the base is connected to a first guide protrusion arranged in a ring shape. The first guide protrusion is located below the fan and bends toward the inside of the fan.

[0015] In the preferred embodiment of the air purification device with air intake from the bottom, the top of the base is located between the air inlet and the air outlet of the water tank, and the top of the base is used to guide the gas in the air intake channel into the air inlet of the water tank.

[0016] In the preferred embodiment of the air purification device that draws air from the bottom, a first support plate is provided in the air intake channel, and the first support plate is used to evenly distribute the gas in the air intake channel.

[0017] Those skilled in the art will understand that the air purification device of the present invention, which introduces air from the bottom instead of from the side, and by setting an air intake channel in the base, allows the air entering from the bottom to be guided into the water tank, which is beneficial for making reasonable use of the internal space of the device and reducing the space occupied by the device. Attached Figure Description

[0018] Figure 1 An air purification device with side air intake is shown;

[0019] Figure 2 A three-dimensional schematic diagram of an air purification device is shown;

[0020] Figure 3 A three-dimensional schematic diagram of a washing section is shown;

[0021] Figure 4 Show Figure 3 Enlarged view at point A;

[0022] Figure 5 A schematic diagram of a water washing assembly for forming a water curtain is shown;

[0023] Figure 6 A cross-sectional view of the cylinder and power unit is shown;

[0024] Figure 7 A three-dimensional schematic diagram of another air purification device;

[0025] Figure 8 A partial cross-sectional view of the power unit of an air purification device is shown;

[0026] Figure 9 An exploded view of an air purification device is shown;

[0027] Figure 10 Show Figure 7 A longitudinal three-dimensional sectional view;

[0028] Figure 11 Show Figure 10 Enlarged view at point I;

[0029] Figure 12 A partial transverse perspective sectional view of the second base shell is shown;

[0030] Figure 13 A longitudinal sectional view of the second base shell in the fixing ring section is shown;

[0031] Figure 14 A partial transverse perspective sectional view of a carrier section and a primary filter assembly thereon is shown.

[0032] Figure 15 Show Figure 14 A magnified view at point G;

[0033] Figure 16 A partial three-dimensional schematic diagram of a carrier section and a primary filter assembly is shown;

[0034] Figure 17 Show Figure 16Enlarged view at point H;

[0035] Figure 18 A top view of a substrate is shown;

[0036] Figure 19 A schematic diagram of another type of washing section is shown;

[0037] Figure 20 Show Figure 2 Partial diagram of the explosion;

[0038] Figure 21 Show Figure 2 A vertical three-dimensional schematic diagram;

[0039] Figure 22 Show Figure 2 A cross-sectional view of the middle section of the air vent hood;

[0040] Figure 23 A three-dimensional schematic diagram of an air outlet shroud and a base is shown. Detailed Implementation

[0041] Figure 1 This invention discloses an air purification device that draws air from the side, such as... Figure 1 As shown, the side-entry air purification device includes a water washing section 100, a power unit, an air inlet section 300, and an air outlet section 400. The water washing section 100 includes a water tank and a water curtain assembly, the power unit includes a motor, and the air outlet section 400 includes a fan. The water curtain assembly is located inside the water tank. Driven by the motor, the water curtain assembly forms a water curtain from the water in the tank. Dust-laden gas, under the action of the fan, enters directly into the water tank through the air inlet located on the side wall and comes into contact with the water curtain formed by the water curtain assembly, thus being purified. The purified clean gas is discharged from the air outlet section 400.

[0042] Understandably, since the air enters from the side, a gap should be maintained between the air inlet of the device and the wall during use to allow the dust-laden air to be introduced. Therefore, the placement of the air purification device with the side air intake has certain requirements. In addition, the fan and motor are located on the upper and lower sides of the water tank, requiring separate power supplies and control systems for each, which leads to cumbersome control of the device and high energy consumption.

[0043] To solve the above problems, the air purification device of the present invention, which introduces air from the bottom, replaces the side air intake by introducing air from the bottom. By setting an air intake channel in the base, the air entering from the bottom is guided into the water tank by the air intake channel, which is conducive to the rational use of the internal space of the device and reduces the space occupied by the device.

[0044] The technical solution of the air purification device with bottom air intake of the present invention will be described below with reference to the accompanying drawings.

[0045] Figure 2 A three-dimensional schematic diagram of an air purification device is shown, such as Figure 2 As shown, the device includes an air inlet 3, a water washing section 1, and an air outlet 4, according to the gas flow direction. The air inlet 3 is located at the bottom of the entire device, the water washing section 1 is located above the air inlet 3, and the air outlet 4 is located above the water washing section 1. Dust-laden gas from the outside enters the air inlet 3 from below and is guided into the water tank 11 of the water washing section 1. After being purified by the water curtain assembly in the water tank 11, clean gas is obtained and flows out to the outside through the air outlet 4.

[0046] exist Figure 2 In this air purification device, a base 5 is also provided for supporting the water tank 11. The air inlet 3 and the power unit 2 can be mounted on the base 5 to achieve modular and integrated configuration. In other words, the air inlet 3 can be formed as a single piece with the base 5 by molding. For example, the side wall or bottom wall of the single piece serves as the air inlet 3, while the bottom wall of the single piece is used to install the power unit 2 and support the water tank 11.

[0047] The water tank 11 has an air inlet communicating with the air inlet 3 and an air outlet communicating with the air outlet 4. Exemplarily, the air outlet 4 may include an air outlet hood 41, which covers the air outlet of the water tank 11. The purified gas enters the air outlet hood 41 from the air outlet of the water tank 11, thereby guiding the purified gas in any desired direction through the air outlet hood 41. For example, Figure 2 The diagram shows the purified air discharged from the outlet of the water tank 11 being directed through the air outlet hood 41 to... Figure 2 The left, right, and back sides of the middle.

[0048] The following sections provide a detailed description of each part of the air purification device.

[0049] The water tank 11 will be described first below.

[0050] Figure 3 A three-dimensional schematic diagram of a washing section is shown; such as Figure 3 As shown, the water tank 11 can be made of a transparent material, such as transparent plastic molded from it. The water tank 11 can contain a cleaning fluid for cleaning the air, which can be clean water, but is not limited to clean water; for example, it can also be water mixed with disinfectant. For simplicity, water is used as an example in the following description, but this should not be considered a specific limitation on the scope of protection.

[0051] like Figure 3As shown, the upper part of the water tank 11 is used for gas flow, and the lower part of the water tank 11 is used for holding water. The air inlet 111 of the water tank 11 can be provided on the upper side wall of the water tank 11.

[0052] Continue as Figure 3 As shown, the top of the water tank 11 can be open to serve as an air outlet, allowing gas entering the water tank 11 to flow out from the top opening. An upper water-blocking structure 15 can be provided at the air outlet, as described below.

[0053] It should be noted that the positions of the air inlet 111 and the air outlet can also be set differently. Figure 3 As shown. For example, the positions of the air inlet 111 and the air outlet can be interchanged, or in some examples, the air inlet 111 and the air outlet can both be located on opposite side walls of the water tank 11. The air purification device of this solution will be described below with the air inlet 111 located on the side wall of the water tank as an example. For other arrangements of the air outlet, those skilled in the art can refer to the following description, and will not be elaborated here.

[0054] Continue to refer to Figure 3 The number of air inlets 111 can be multiple, or only one can be set. The shape and size of each air inlet 111 can be set according to actual needs. For example... Figure 3 As shown, when there are multiple air inlets 111, these air inlets 111 can be evenly distributed along the circumference of the side wall of the water tank 11 in order to evenly distribute the gas and make the gas entering the water tank 11 evenly distributed.

[0055] It is worth noting that when the air inlet is located on the side wall of the water tank 11 and the air outlet is located on the top of the water tank 11, the upper surface of the air inlet should be lower than the plane of the water curtain formed by the washing assembly. This ensures that the dust-laden air entering the water tank 11 from the air inlet can only flow out of the water tank 11 from the air outlet after being cleaned by the water curtain. It should be noted that since water is affected by gravity, the plane of the water curtain here is a general term; in principle, the upper surface of the air inlet should be below the intersection of the water curtain and the side wall.

[0056] As shown above, the lower part of water tank 11 is used to hold water, therefore, graduation lines can be provided on the lower side wall of the water tank so that users can observe and control the liquid level in water tank 11. It is easy to understand that water tank 11 can also be made of transparent material only in the part with the graduation lines, while the rest is made of opaque material, so that users can observe the water level in water tank 11 through the graduation lines on the transparent part. (Reference) Figure 3 As shown, the scale lines may include the lowest liquid level line, which can be represented by "0"; or the highest liquid level line, which can be represented by "max". Understandably, the scale line marked "max" is located below the air inlet.

[0057] Figure 5 A schematic diagram of a water washing assembly for forming a water curtain is shown, such as... Figure 5 As shown, the water washing assembly can lift the water stored in the water tank 11 upwards and spray the water towards the inner wall of the water tank 11. Specifically, the water washing assembly may include a hollow cylinder 12, the lower end of which is connected to the lower end of the water tank 11. Exemplarily, the lower end of the cylinder 12 is open. There is a gap between the lower opening of the cylinder 12 and the bottom wall of the water tank 11, so that water in the water tank 11 can enter the interior of the cylinder 12 through the gap. The power unit 2 can rotate the cylinder 12 about its own axis, so that the water entering the cylinder 12 gradually moves upwards along the inner wall of the cylinder 12 under the action of rotational force. Multiple water-throwing holes 121 are provided circumferentially on the side wall near the top of the cylinder 12. These water-throwing holes 121 are higher than the highest liquid level of the washing liquid contained in the water tank 11, so that water raised from the inner wall of the cylinder 12 is thrown out through 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 hole 121), gradually approaching the inner wall of the water tank 11, thereby forming a water curtain to clean the air entering from the air inlet. It should be noted that the multiple water-throwing holes 121 can be arranged in a circle uniformly or non-uniformly along the circumference of the cylinder 12, and in some examples, multiple circles of water-throwing holes 121 can be arranged along the axis of the cylinder 12 to improve the water washing and purification effect.

[0058] Continue to refer to Figure 5 The side wall of the cylinder 12 can be gradually inclined from top to bottom toward the direction away from the axis of the cylinder 12. That is to say, the cylinder 12 is set in a roughly conical shape, with the small diameter end of the cone at the bottom and the large diameter end at the top, so as to facilitate water to climb up along the inner wall of the cylinder 12.

[0059] Continue to refer to Figure 5 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. A water-throwing hole 121 can be provided in the upper section 122. The upper and lower sections can be manufactured into a single piece by means of integral molding 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, which are then assembled together by means of screwing, swivel, or welding. Moreover, the lower end of the upper section 122 and the upper end of the lower section 123 can be nested 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.

[0060] 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 step can be used to connect the upper section 122 and the lower section 123. By forming a step between the upper and lower sections, a temporary storage area can be provided for water to climb up the inner wall of the cylinder 12, which is beneficial to increasing the amount of water thrown out from the water-throwing hole 121.

[0061] Optionally, Figure 6 A cross-sectional view of a cylinder and a power unit is shown to illustrate the connection between an upper section 122 and a 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.

[0062] The lower segment 123 can be embedded within the flange. Exemplarily, the lower segment 123 may include a lower cylinder and an outer flange. The outer flange can be fitted onto the outer side of the upper end of the lower cylinder, and one end of the outer flange can be higher than the upper end of the lower cylinder. The axial section of the inner flange abuts against the top of the lower cylinder, 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 located on the same curved surface as the lower cylinder. This provides a smooth climbing surface for the droplet. Furthermore, the outer flange and the inner flange cooperate with each other and mutually block gaps, which facilitates improved sealing between the upper segment 122 and the lower segment 123. (The remaining text appears to be a list of components and is not translated.)

[0063] It is worth noting that, in order to achieve a seal between the upper section 122 and the lower section 123, a sealing element can also be provided between the lower section 123 and the upper section 122. The sealing element includes, but is not limited to, sealing rings and gaskets.

[0064] Optionally, the angle between the sidewall of the lower section 123 and the axis of the cylinder 12 can be greater than the angle between the sidewall of the upper section 122 and the sidewall of the cylinder 12. Water rises rapidly in the lower section 123, while in the upper section 122, it is easier to break free from the supporting or adhesive forces of the inner wall of the upper section 122, making it easier to be ejected from the water-throwing hole 121. Furthermore, the change in the tilt angle of the upper section 122 can also be considered in relation to the size of the air inlet opening. Understandably, the direction of the initial velocity of the water ejected from the water-throwing hole 121 as it leaves the upper section 122 can be related to the cross-section of the upper section 122. The direction of the initial velocity affects the trajectory of the ejected water, and consequently, the contact area between the ejected water and the gas. By rationally setting one or more of the positions of the water-throwing holes 121 on the cylinder 12, the rotation speed of the cylinder 12, and the cross-section of the cylinder 12 at the location of the water-throwing holes 121, the quality of the water curtain formed by the water washing assembly can be improved, thereby enhancing the air purification effect.

[0065] like Figure 6 As shown, the upper end of the cylinder 12 may be open, and a top cover 13 may be provided at the upper end of the cylinder 12. The top cover 13 can be used to close the upper opening of the cylinder 12. In addition, when the water in the cylinder 12 rises to the upper end face of the cylinder 12 as the cylinder 12 rotates, the water can be blocked by the upper end face and fall down, so that at least part of the water blocked by the upper end face flows out from the water-throwing hole 121, thereby increasing the water output of the water-throwing hole 121.

[0066] Optionally, the top cover 13 may include a bottom wall and a side wall. The bottom wall of the top cover 13 may abut against the upper end face of the cylinder 12, and the side wall of the top cover 13 may be fitted onto the outside of the cylinder 12. The lower end face of the side wall of the top cover 13 is located above the water-throwing hole 121 to block at least a portion of the water with an upward tendency. It is understood that at least a portion of the water thrown out from the water-throwing hole 121 has an initial velocity with an upward tendency. The trajectory of this portion of water may be above the movement range of the gas, and this portion of water may not come into contact with the gas. By appropriately providing a flange extending away from the cylinder 12 on the side wall of the top cover 13, the ability to intercept 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 can fall onto the outer wall of the upper section 122 below the side wall of the upper cover 13, and can be thrown out towards the inner 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.

[0067] Alternatively, the cylinder 12 and the top cover 13 can be integrally formed by injection molding or other integral molding methods. In this case, an upper water-blocking protrusion can be provided above the water-slinging hole 121. The upper water-blocking protrusion extends from the outer side wall of the cylinder 12 toward the direction away from the cylinder 12 so as to block at least part of the water that tends to move toward the top of the water tank 11.

[0068] Alternatively, the upper end of the cylinder 12 is open. The water-throwing hole 121 of the cylinder 12 is served by the opening at its top, while the water-throwing hole 121 may or may not be provided on its side wall. When the cylinder 12 is driven to rotate, the water drawn into the cylinder 12 rises up along its side wall, and all or part of the water that rises up can be thrown out from the opening at the top of the cylinder 12 to form a water curtain.

[0069] Optionally, such as Figure 5 and Figure 6As shown, a lower water-blocking protrusion 14 can also be provided below the water-throwing hole 121. The lower water-blocking protrusion 14 extends from the outer wall of the cylinder 12 toward the direction away from the cylinder 12, so as to block the water sprayed from the water-throwing hole 121 that moves toward the bottom of the water tank 11. Understandably, at least part of the water thrown out from the water-throwing hole 121 has an initial velocity that tends to move towards the bottom of the water tank 11. On the one hand, the trajectory of this part of the water may be outside the 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 setting the lower water-blocking 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-blocking protrusion 14 and be thrown out under the action of centrifugal force as the cylinder 12 rotates, so as to form a water curtain, which is beneficial to improving the air purification effect. On the other hand, this part of the water is easy to fall from the air inlet on the side wall of the water tank 11 to the outside of the water tank 11. By setting the lower water-blocking protrusion 14, water can be prevented from splashing out of the water tank 11 from the air inlet to a certain extent.

[0070] like Figure 3 As shown, an upper water-blocking structure 15 is provided at the air outlet of the water tank 11 to block the air outlet of the water tank 11. By providing the upper water-blocking structure 15, water thrown out from the water-throwing hole 121 can be blocked, preventing it from splashing out of the air outlet of the water tank 11 onto the outside of the water tank 11. It should be noted that the water blocked by the upper water-blocking structure 15 can include water directly thrown out from the water-throwing hole 121, or water carried by the gas passing through the water curtain.

[0071] For example, Figure 4 yes Figure 3 A magnified view at point A, as shown Figure 4 As shown, the upper water-blocking structure 15 includes a water-absorbing component 151. The water-absorbing component 151 can be made of a material that can block water droplets from passing through but allows gas to pass through. For example, it can be a porous polymer material such as mesh polyurethane foam or sponge.

[0072] Furthermore, to facilitate the installation and support of the water-absorbing component 151 and prevent excessive sagging after water absorption, the upper water-blocking structure 15 may also include a support frame. The support frame may be a hollow column, and the water-absorbing component 151 may be installed inside the support frame. The support frame may be installed at the top of the water tank 11 by means of screws, snap-fit ​​connections, or other suitable methods. For example, a placement groove 112 may be provided at the top of the water tank 11, and the support frame may be embedded in the placement groove 112. Exemplarily, the bottom wall of the placement groove 112 may be used to support the bottom wall of the support frame, and the side wall of the support frame may be interference-fitted with the side wall of the placement groove 112 to restrict the displacement of the support frame in the circumferential direction.

[0073] The support frame can also be configured as a mesh structure, which can be installed on the top of the water tank 11 in the same manner as the hollow columnar support frame described above. By configuring the support frame as a mesh structure, not only can the supporting force of the support frame on the water suction element 151 be improved, but the passage of purified gas will not be affected. Optionally, the mesh of the mesh structure can be hexagonal to improve the stability of the support frame.

[0074] Optionally, the support frame may include a support section 152 and a cover section 153. The support section 152 may include a bottom wall and a side wall. The side wall of the support section 152 may be connected to the outer periphery of the bottom wall of the support section 152 and extends upward. The cover section 153 may include a top wall and a side wall. The side wall of the cover section 153 may be connected to the outer periphery of the top wall of the cover section 153 and extends downward. The side wall of the support section 152 may be fitted over the outside of the side wall of the cover section 153. The absorbent 151 can be located within the receiving space enclosed 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 absorbent 151 is supported by the support section 152, the upper end of the absorbent 151 is covered by the covering section 153 to limit the upper part of the absorbent 151, and the circumference of the absorbent 151 is limited by the side wall of the covering section 153 and the side wall of the support section 152, so as to maintain the structural shape of the absorbent 151 and facilitate the installation of the absorbent 151.

[0075] Additionally, the support section 152 and / or the cover section 153 may have a certain degree of elasticity to improve the sealing performance between the side walls of the support section 152 and the cover section 153, thereby preventing water from splashing out of the water tank 11 from between the side walls of the support section 152 and the cover section 153. Furthermore, the sealing performance can be improved by providing a sealing element, or by an interference fit between the cover section 153 and the support section 152.

[0076] Continue to refer to Figure 4 When the covering section 153 and the supporting section 152 are interference-fitted, the outer periphery of the top wall of the covering section 153 may be provided with a mounting groove, and the upper end of the side wall of the supporting section 152 may be connected with a mounting protrusion, which can be fitted into the mounting groove. For example, the mounting protrusion may face the axial direction of the supporting section 152, and the lower end face of the mounting protrusion may abut against the bottom wall of the mounting groove to prevent movement of the upper end of the covering section 153. Optionally, there may be one or more mounting grooves, and multiple mounting grooves may be evenly distributed on the outer periphery of the covering section 153.

[0077] The following describes the power unit 2.

[0078] The following text is incomplete and cannot be translated. Figure 6The structure shown will be used as an example to explain the power unit 2 and its cooperation with the cylinder 12. That is to say, the following will use the example of an upper cover 13 provided on top, with the side wall of the upper cover 13 fitted onto the outside of the cylinder 12, to illustrate the situation where the power unit 2 drives the cylinder 12 to rotate. However, it should be understood that the structure of the cylinder 12 is not limited to this. Figure 6 The structure in the text can also be any of the other structures mentioned above.

[0079] like Figure 6 As shown, the power unit 2 may include a rotating shaft 21, a reducer, and a motor 22. The motor 22 can be electrically connected to an external power source and has a motor shaft 221. The base 5 may include a base 51. The reducer may include a first helical gear 23 rotatably mounted 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 is understood that the structure of the reducer may include, but is not limited to, the above-described structure. By adopting a separable engagement method such as the first helical gear 23 and the second helical gear 24, the water tank 11 and the base 51 can be easily disassembled, thereby facilitating 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, it is only necessary to separate the first helical gear 23 and the second helical gear 24.

[0080] Additionally, the motor shaft 221 can 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 can be coaxially connected to the second helical gear 24, and the second end of the rotating shaft 21 can be connected to the cylinder 12. Referring to the figure, the first end of the rotating shaft 21 can be the lower end of the rotating shaft 21, and the second end of the rotating shaft 21 can be the upper end of the rotating shaft 21. Understandably, 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 thus drive the rotating shaft 21 connected to the second helical gear 24 to rotate, causing the cylinder 12 connected to the rotating shaft 21 to rotate, thereby realizing the functions of the cylinder 12 in drawing water from the water tank 11, lifting water, and spraying water.

[0081] Installation of motor 22:

[0082] like Figure 6The motor 22 may include a motor body 222 and a motor shaft 221. The motor body 222 can be suspended on the base 51 to reduce the impact of motor 22 vibration on the components below it. Exemplarily, mounting claws 223 extending outward from the side wall of the motor body 222 may be connected to the side wall of the motor body 222. The mounting claws 223 may have fastening holes, through which fasteners can pass and connect to the base 51. Schematically, multiple mounting claws 223 may be arranged circumferentially on the outer side of the motor body 222. These mounting claws 223 may be evenly distributed around the outer periphery of the motor body 222 to balance the force on the motor 22 base. Fasteners include, but are not limited to, bolts, screws, and locating pins. Additionally, the base 51 may be thickened at the connection point with the fasteners to improve the load-bearing capacity of the base 51. Exemplarily, the base 51 may have a connecting post 511. The end of the connecting post 511 away from the base 51 may abut against the mounting claw 223, and fasteners can pass through the through holes of the mounting claw 223 and connect to the connecting post 511. The number of connecting posts 511 can be the same as the number of mounting claws 223.

[0083] Furthermore, a vibration damping structure can be provided between the upper end of the motor body 222 and the base 51 to reduce the impact of vibrations generated by the motor 22 on the base 51. The vibration damping structure may include a first vibration damping sleeve, which may be located between the upper end of the motor body 222 and the lower end face of the base 51. The first vibration damping sleeve may be made of an elastic material such as rubber to reduce vibration.

[0084] Installation of the first helical gear 23:

[0085] like Figure 6 As shown, the first helical gear 23 is rotatably mounted above the base 51, and the motor shaft 221 can pass through the base 51 and connect to the first helical gear 23. The upper end of the motor shaft 221 can be threaded to achieve the installation of the motor shaft 221 and the first helical gear 23. Exemplarily, the motor shaft 221 may include a first segment and a second segment connected together. The first segment of the motor shaft 221 is connected to the motor body 222, and the second segment of the motor shaft 221 is threaded to the first helical gear 23. The cross-sectional radius of the first segment of the motor shaft 221 is larger than the cross-sectional radius of the second segment. The lower end of the first helical gear 23 can abut against the upper end face of the first segment of the motor shaft 221 to prevent the first helical gear 23 from moving downwards. Furthermore, the rotation direction of the motor shaft 221 allows the first helical gear 23 to be threaded onto the motor shaft 221, so that the motor shaft 221 can drive the first helical gear 23 to rotate.

[0086] Optionally, a vibration damping structure may be provided between the first helical gear 23 and the second helical gear 24 to reduce the impact of vibration on the first helical gear 23 on the second helical gear 24. The vibration damping structure may include a second vibration damping sleeve, which may be fitted onto the first helical gear 23 to increase the contact surface between the second vibration damping sleeve and the first helical gear 23.

[0087] Installation of the second helical gear 24:

[0088] like Figure 6 As shown, the second helical gear 24 can be installed at the lower end of the water tank 11. To isolate the power unit 2 from the water in the water tank 11, a mounting recess 114 can be provided on the bottom wall of the water tank 11. The mounting recess 114 has a downward-facing opening, and the second helical gear 24 is at least partially installed in the mounting recess 114. The mounting recess 114 extends into the water tank 11 and is located inside the cylinder 12.

[0089] Optionally, to simplify the processing and / or assembly process, a base plate 115 may be installed at the bottom of the water tank 11. The base plate 115 may have an insertion port 1151 coaxial with the mounting recess 114. Exemplarily, the base plate 115 is detachably connected to the water tank 11, for example, the base plate 115 and the water tank 11 are assembled together by screws.

[0090] The second helical gear 24 can be disposed inside the insertion port 1151 to enable modular installation. For example, a limiting plate 1152 may be provided within the insertion port 1151, and the limiting plate 1152 and the area below it define the installation space for the second helical gear 24. The second helical gear 24 is rotatably disposed within this installation space to limit its range of motion.

[0091] Based on the above, the insertion port 1151 is located outside the first helical gear 23. Thus, the activity areas of the first helical gear 23 and the second helical gear 24 can be defined by the limiting plate 1152, the insertion port 1151 and the base 51. That is to say, the upper part of the second helical gear 24 is limited by the limiting plate 1152 and the lower part of the second helical gear 24 is limited by the first helical gear 23. Therefore, the longitudinal movement of the second helical gear 24 will be restricted, thereby preventing the second helical gear 24 and the first helical gear 23 from disengaging and ensuring the reliability of the transmission.

[0092] The lower end of the rotating shaft 21 can be threaded to the second helical gear 24. For example, the motor 22 causes the second helical gear 24 to rotate, and the rotation direction of the second helical gear 24 is such that the second helical gear 24 and the rotating shaft 21 are mutually tightened. That is, the direction of movement of the second helical gear 24 driven by the motor 22 can be opposite to the direction in which the rotating shaft 21 disengages from the second helical gear 24, so that the second helical gear 24 drives the rotating shaft 21 to rotate.

[0093] Installation of shaft 21:

[0094] like Figure 6 As shown, the lower end of the rotating shaft 21 can be connected to the second helical gear 24, and the rotating shaft 21 can pass through the insertion port 1151 and the mounting recess 114 from bottom to top and be connected to the upper end of the cylinder 12. That is to say, the rotating shaft 21 can be rotatably installed in the insertion port 1151 and the mounting recess 114. The mounting recess 114 or the insertion port 1151 can radially limit the rotating shaft 21 to prevent the rotating shaft 21 from bending and being damaged. For example, a bearing 25 can be provided in the insertion port 1151, and the rotating shaft 21 can be rotatably installed inside the insertion port 1151 through the bearing 25, and the bearing 25 can provide radial support for the rotating shaft 21. Optionally, the limiting plate 1152 can divide the insertion port 1151 into a first area and a second area arranged side by side in the vertical direction. The second helical 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 achieve modular installation.

[0095] Optionally, an oil seal 27 and a gasket 26 may be provided in the second region, with the gasket 26 located between the bearing 25 and the oil seal 27. The gasket 26 isolates the oil seal 27 and the bearing 25 and prevents the rolling elements of the bearing 25 from slipping out. The oil seal 27 seals the shaft 21 to prevent dust, liquids, etc. from entering.

[0096] Optionally, a bearing 25 may also be provided at the upper end of the mounting recess 114 to provide radial support for the rotating shaft 21. The upper end of the mounting recess 114 may also be provided with the gasket 26 and oil seal 27 mentioned above.

[0097] It should be noted that the bearings 25, gaskets 26, and oil seals 27 on the mounting recess 114 and insertion port 1151 can be arranged symmetrically.

[0098] like Figure 6 As shown, a connector 28 may be provided between the upper side wall of the rotating shaft 21 and the inner wall of the cylinder 12, so as to connect the rotating shaft 21 and the cylinder 12 together through the connector 28. The connector 28 may be provided above the mounting recess 114 (e.g., Figure 6 As shown, the connector 28 may include a sleeve 281 and a connecting piece 282. The sleeve 281 can be sleeved on the outer side of the first end of the rotating shaft 21, and the two sides of the connecting piece 282 are respectively connected to the outer side of the sleeve 281 and the inner wall of the cylinder 12, thus realizing the connection between the rotating shaft 21 and the cylinder 12. In order to improve the sealing performance, the sleeve 281 can be formed as a whole with the bottom wall of the water tank 11 by means of integral molding such as injection molding.

[0099] One or more connecting pieces 282 may be provided. When multiple connecting pieces 282 are provided, the multiple connecting pieces 282 can be evenly distributed around the circumference of the rotating shaft 21 in order to improve the connection strength between the connector 28 and the cylinder 12. At the same time, the connecting pieces 282 can also play a supporting role for the cylinder 12 in order to improve the structural strength of the cylinder 12.

[0100] Continue to refer to Figure 6 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. For example, the inner wall of the upper cover 13 can be provided with a mounting block, which extends downward, and the upper end of the rotating shaft 21 can be threaded to the mounting block.

[0101] In addition, such as Figure 6 As shown, a reinforcing rib may be provided between the outer wall of the mounting block and the upper cover 13 to support the mounting block and enhance its strength. Exemplarily, one end of the reinforcing rib is connected to the outer wall of the mounting block, and the other end extends toward the inner wall of the upper cover 13 and connects to the inner wall of the upper cover 13. Optionally, the reinforcing rib may be arranged circumferentially around the mounting block to enhance its circumferential strength.

[0102] Optionally, such as Figure 6 As shown, an annular protrusion may be connected to the bottom wall of the upper cover 13, and the annular protrusion may extend toward the bottom end of the cylinder 12. There is a gap between the annular protrusion and the side wall of the upper cover 13, and the top end of the side wall of the cylinder 12 may extend into the gap.

[0103] When air is introduced from below, the dust-laden gas enters the water tank 11 from below, guided by the air inlet 3. The fan can be installed in the lower air inlet 3 or the upper air outlet 4. When the fan is located in the lower air inlet 3, the center of gravity of the air purification device is lowered, making the device more stable. The following description uses the example of the fan being installed in the air inlet 3 to illustrate the distribution of the components of the device when air is introduced from below.

[0104] Understandably, when the fan is located in the air inlet 3, since the air inlet 3 is located at the lower end of the device, and as mentioned above, the power unit 2 is also located at the lower end of the device, the problems that need to be solved are how to install the fan and the motor 22 of the power unit 2, and how to guide the gas entering from below upward.

[0105] The installation methods for the fan and motor 22 include, but are not limited to, the following possible implementation methods:

[0106] In one possible implementation, Figure 8 A partial cross-sectional view of the power unit of an air purification device is shown, such as Figure 8As shown, motor 22 is a dual-axis motor 29, which includes a dual-axis motor body 291, a first motor shaft 292, and a second motor shaft 293. The fan may include a fan 32.

[0107] Exemplarily, a first motor shaft 292 extends upward from the dual-shaft motor body 291, and a second motor shaft 293 extends downward from the dual-shaft motor body 291. The first motor shaft 292 can be connected to a first helical gear 23 so that the cylinder 12 rotates to throw water to form a water curtain in the water tank 11. The second motor shaft 293 is connected to a fan 32 so as to drive the fan 32 to rotate, thereby sending dust-laden gas from below into the water tank 11 above. Understandably, both the first helical gear 23 and the fan 32 can be driven by the same motor 22, which can reduce cost and weight and facilitate installation.

[0108] Optionally, the dual-axis motor 29 can be suspended and mounted on the base 51. For specific implementation details, refer to the installation of the motor 22 and base 51 described above. That is, mounting claws 223 are evenly distributed around the outer periphery of the dual-axis motor body 291. The mounting claws 223 may have through holes, through which fasteners can pass to connect to the base 51. Additionally, since the fan 32 is connected to the lower end of the dual-axis motor body 291, its weight increases. To improve connection stability, the distances from the through holes on at least two mounting claws 223 to the sidewall of the motor 22 base are set unequally. For example, multiple first mounting claws 223 may be evenly distributed around the circumference of the dual-axis motor body 291, and a second mounting claw 223 may be provided between two adjacent first mounting claws 223. The first mounting claw 223 may have a first through hole, and the second mounting claw 223 may have a second through hole. The distance from the first through hole to the sidewall of the dual-axis motor body 291 is less than the distance from the second through hole to the sidewall of the dual-axis motor body 291. In addition, the first mounting claw 223 and the second mounting claw 223 can be set at the same axial position or different axial positions of the dual-axis motor body 291.

[0109] Optionally, the fan 32 may include a fan 32 housing and at least two fan 32 blades 161 connected to the side wall of the fan 32 housing. To reduce the height of the base 5 in the longitudinal direction, the fan 32 housing may be fitted onto the lower end of the dual-axis motor body 291, and the fan 32 housing may rotate relative to the dual-axis motor body 291. For example, a limiting ring 294 is fitted onto the second motor shaft 293, and one end of the second motor shaft 293 away from the dual-axis motor body 291 may pass through the fan 32 housing from top to bottom. A nut 295 may be threadedly connected to one end of the second motor shaft 293 extending out of the fan 32 housing, and the limiting ring 294 may abut against the upper end of the bottom wall of the fan 32 housing. By rotating the nut 295, the bottom wall of the fan 32 housing can be clamped between the limiting ring 294 and the nut 295.

[0110] To improve the strength of the fan 32 housing at the connection point, a reinforcing block 233 may optionally be provided on the fan 32 housing. The reinforcing block 233 may include a first end and a second end. The first end of the reinforcing block 233 may be located inside the fan 32 housing, and a retaining ring 294 may abut against the upper end face of the reinforcing block 233. The second end of the reinforcing block 233 may protrude from the fan 32 housing and abut against the upper end face of the nut 295. The end of the second motor shaft 293 away from the dual-shaft motor body 291 may protrude from the reinforcing block 233 and be threadedly connected to the nut 295. Furthermore, a reinforcing rib 1651 may be provided between the side wall of the reinforcing block 233 and the bottom wall of the fan 32 housing to improve the strength of the reinforcing block 233. The connection between the first motor shaft 292 and the first helical gear 23 is described above and will not be repeated here.

[0111] Optionally, the radius of the fan 32 casing can be gradually increased from bottom to top in order to guide the gas entering from below toward the outside and top of the fan.

[0112] It is worth noting that the fan 32 can also have other structures; this is just an example and does not impose any specific limitations on the structure of the fan 32. The fan 32 is sufficient as long as it can cause the gas entering the base 5 from below to move upwards.

[0113] The following section explains how a bottom-intake air purification device, as mentioned above, guides airflow.

[0114] Figure 9 An exploded view of an air purification device is shown, such as Figure 9 As shown, the base 5 includes a second base shell 54 and a base 51. The second base shell 54 may be cylindrical, and both ends of the second base shell 54 may be open. The lower end of the base 51 is used to install the motor 22 and the fan, and the upper end of the base 51 is used to place the water tank 11. The second base shell 54 may be fitted over the outside of the base 51, and a preset gap may be provided between the second base shell 54 and the base 51 so that air entering from below the second base shell 54 can enter the water tank 11 through the air inlet of the water tank 11 via the preset gap.

[0115] For ease of description, the direction of arrow X indicates the width direction of the second base shell 54, the direction of arrow Y indicates the length direction of the second base shell 54, and the direction of arrow Z indicates the height direction of the second base shell 54. Exemplarily, the water tank 11 can be detached from the base 51 along the length direction of the second base shell 54.

[0116] Figure 10 Show Figure 7 A longitudinal three-dimensional sectional view, such as Figure 9 and Figure 10As shown, the second base shell 54 may include, from bottom to top, a support section 541, a fan mounting section 542, and a base 51 mounting section. The support section 541 is located at the bottom of the entire device and is used to support the weight of the dual-shaft motor 29, the fan, and the water tank 11 in the device; the fan mounting section 542 corresponds to the position where the fan is installed in order to achieve better air intake effect; the base 51 mounting section is used to fix the base 51; and the base 51 mounting section can also be used to guide gas into the water tank 11.

[0117] Regarding bearing section 541:

[0118] Optionally, Figure 12 A partial transverse perspective sectional view of the second base shell 54 is shown, as follows: Figures 9-12 As shown, the bearing section 541 may be hollow and prismatic in shape. A reinforcing structure may be provided on the outer wall of the bearing section 541 to improve its load-bearing capacity. For example, the side wall of the bearing section 541 may be provided with a first bearing flange 5411 arranged axially to improve the ability of the side wall of the bearing section 541 to bear axial forces. Multiple first bearing flanges 5411 may be provided, or only one may be provided. Figure 9 Taking multiple first bearing flanges 5411 as an example, the multiple first bearing flanges 5411 can be evenly distributed on the side wall of the bearing section 541.

[0119] In addition, an outer peripheral flange 5412 may be connected to the outer periphery of the side wall of the bearing section 541 to strengthen the side wall circumferentially. The two ends of the first bearing flange 5411 may be connected to the outer peripheral flange 5412 respectively to improve the overall integrity of the multiple first bearing flanges 5411 and further improve the stress on the side wall of the bearing section 541.

[0120] In addition, the upper end of the side wall of the bearing section 541 may be provided with a support groove 5413, and the upper end of the first bearing flange 5411 may extend into the support groove 5413 in order to improve the connection strength between the bearing protrusion and the side wall of the bearing section 541.

[0121] Optionally, a second bearing flange 5414 may also be connected to the inner wall of the bearing section 541. The second bearing flange 5414 may be arranged along the axial direction of the bearing section 541 to further improve the structural strength of the bearing section 541. In addition, the cross-section of the second bearing flange 5414 gradually decreases from top to bottom.

[0122] Regarding the air intake grille 544:

[0123] Optionally, an air inlet grille 544 may also be provided on the support section 541 to isolate the fan blades 43111 and prevent injury to personnel. Exemplarily, the air inlet grille 544 may be disposed within the support section 541 and located below the fan to allow air to enter while preventing hand contact. Additionally, a filter screen may be provided on the air inlet grille 544 for primary air filtration. The air inlet grille 544 may include a ring-shaped fixing ring 5441, within which a first grid 5442 and a second grid 5443 arranged in two directions may be provided. The first grid 5442 and the second grid 5443 may intersect to form mesh openings for uniform air distribution.

[0124] For example, as shown in the figure, the first grid strip 5442 may be arranged radially along the bearing section 541, and the second grid strip 5443 may be arranged circumferentially along the bearing section 541. There may be one or more second grid strips 5443, and when there are multiple second grid strips 5443, the multiple second grid strips 5443 may be arranged concentrically.

[0125] It is worth noting that the retaining ring 5441 is detachably connected to the supporting section 541. The retaining ring 5441 can be inserted into the supporting section 541 along its length so that it can move along the length of the supporting section 541 during disassembly or installation, allowing it to detach from or be inserted into the supporting section 541. Furthermore, for consistency in disassembly or installation, the direction of movement of the water tank 11 from the base 51 and the direction of movement of the retaining ring 5441 from the base 51 can be aligned.

[0126] Figure 13 A longitudinal sectional view of the second base shell 54 at the fixing ring 5441 portion is shown, as follows. Figure 10 and Figure 13 As shown, exemplarily, the inner wall of the bearing section 541 in the width direction may be connected with an upper flange 5415 and a lower flange 5416. In the axial direction of the bearing section 541, a preset gap may be provided between the upper flange 5415 and the lower flange 5416. A retaining ring 5441 may extend between the upper flange 5415 and the lower flange 5416, and the retaining ring 5441 is restricted between the upper flange 5415 and the lower flange 5416 to achieve the positioning and installation of the retaining ring 5441.

[0127] It should be noted that along the direction in which the fixing ring 5441 enters the bearing section 541 ( Figure 10 and Figure 9 (In the direction indicated by the middle arrow Y), the two ends of the bearing section 541 along its length direction may be provided with a first sidewall and a second sidewall in sequence. That is, when the fixing ring 5441 is installed onto the bearing section 541, the fixing ring 5441 passes through the first sidewall and is connected to the second sidewall.

[0128] Among them, such as Figure 13 As shown, the upper flange 5415 may be located below the lower flange 5416. The lower flange 5416 may include an introduction section 54161 and a positioning section 54162 connected to the introduction section 54161. The introduction section 54161 is disposed near the first sidewall of the bearing section 541. Along the direction in which the retaining ring 5441 enters the bearing section 541, the introduction section 54161 may gradually tilt upward. The introduction section 54161 may serve as a guide, allowing the retaining ring 5441 to enter the bearing section 541 along the introduction section 54161 and tilt upward into the preset gap formed by the positioning section 54162 and the upper flange 5415.

[0129] In addition, such as Figure 12 As shown, a locking block may be provided on the side wall of the bearing section 541 between the upper flange 5415 and the lower flange 5416, and an inner recess 5444 extending toward the inner side of the fixing ring 5441 may be provided on the fixing ring 5441. The locking block can be engaged with the inner recess 5444 to achieve a locking fixation between the fixing ring 5441 and the inner wall of the bearing section 541.

[0130] Furthermore, one end of the retaining ring 5441 extending into the bearing section 541 can abut against the second sidewall of the bearing section 541 to restrict the position of the retaining ring 5441. It is worth noting that, as... Figure 12 As shown, in conjunction with the description of the first bearing flange 5411 and the second bearing flange 5414 mentioned above, the first bearing flange 5411 can be disposed on the outer side of the sidewall in the width direction of the bearing segment 541 to facilitate the installation of the mounting ring. The second bearing flange 5414 can be disposed on the inner side of the second sidewall of the bearing segment 541, and the upper shell of the second bearing flange 5414 is provided with a groove, and one end of the fixing ring 5441 extending into the bearing segment 541 can be engaged in the groove to further secure the fixing ring 5441 and the bearing segment 541. At least one of the second bearing flanges 5414 may not be provided with a groove to maintain the structural strength of the sidewall of the bearing segment 541. In this case, one end of the fixing ring 5441 extending into the bearing segment 541 can abut against the inner side of the second bearing flange.

[0131] Optionally, such as Figure 12 and Figure 13As shown, the retaining ring 5441 may be provided with a pull-out protrusion 5445, which may be located on the outside of the supporting section 541 for easy removal by the user. The first sidewall of the supporting section 541 may be provided with an insertion groove 5417. Along the axial direction of the supporting section 541, the opening size of the insertion groove 5417 may be larger than the height of the retaining ring 5441, allowing the retaining ring 5441 to pass through the insertion groove 5417. The retaining ring 5441 can pass through the insertion groove 5417 into the interior of the supporting section 541. The lower end face of the insertion groove 5417 may be flush with the introduction section 54161, allowing the retaining ring 5441 to smoothly transition from the insertion groove 5417 to the introduction section 54161.

[0132] Additionally, a locking block 5446 may be connected to one end of the retaining ring 5441 near the first sidewall of the bearing section 541. The locking block 5446 may abut against the lower end face of the insertion groove 5417 to limit the position of the retaining ring 5441 near the first sidewall of the bearing section 541 within the insertion groove 5417. Furthermore, the locking block 5446 may slide relative to the insertion groove 5417 to guide the retaining ring 5441 when it disengages from the bearing section 541.

[0133] It is worth noting that, when air is introduced from below, a primary filter assembly 31 can be installed in the bearing section 541 to perform primary filtration of the dust-laden gas. The structure of the primary filter assembly 31 can be either the filter screen installed on the air inlet grille 544 mentioned above, or the structure described below.

[0134] For example, Figure 14 A partial transverse perspective sectional view of a carrier section 541 and a primary filter assembly 31 thereon is shown. Figure 16 A partial perspective view of a carrier section 541 and a primary filter assembly 31 is shown; as follows: Figure 14 and Figure 16 As shown, a filter groove is provided on the support section 541, and the filter groove is arranged along the length direction of the support section 541. The primary filter assembly 31 includes a filter shell 315 and a filter element 316 disposed within the filter shell 315. The filter shell 315 has several through holes to allow gas to pass through. The primary filter assembly 31 is inserted into the filter groove along the length direction of the support section 541. The bottom of the filter groove supports the filter shell 315, and the walls of the filter groove restrict the circumferential position of the filter shell 315.

[0135] Optionally, the filter housing 315 may be provided with a pull handle 317 to provide a position for the user to apply force and facilitate the pulling out of the primary filter assembly 31.

[0136] Optionally, Figure 15 Show Figure 14 A magnified view at point G, as shown Figure 14 and Figure 15As shown, an upper limiting block 318 may be connected to the sidewall of the supporting section 541. The upper limiting block 318 may abut against the upper end of the primary filter assembly 31 to limit the position of the primary filter assembly 31 in the longitudinal direction. Exemplarily, the upper limiting block 318 may extend from the wall of the filter tank toward the interior of the filter tank. In addition, an inlet block 3181 may be connected to the upper limiting block 318, and the inlet block 3181 may be bent upward relative to the upper limiting block 318. Along the direction in which the primary filter assembly 31 extends into the filter tank, the inlet block 3181 may gradually move toward the upper limiting block 318 and tilt downward. Furthermore, two adjacent sidewalls of the upper limiting block 318 may be respectively connected to two adjacent tank walls to improve the connection strength of the upper limiting block 318.

[0137] Optionally, Figure 17 Show Figure 16 A magnified view at point H, as shown Figure 16 and Figure 17 As shown, a lower limiting block 319 is provided on the bottom of the filter tank, and a lower limiting groove 3151 is provided on the upper shell of the filter shell 315. The lower limiting block 319 can be engaged with the lower limiting groove 3151 to achieve positioning restriction between the filter shell 315 and the filter tank along the length direction of the bearing section 541.

[0138] Optionally, when the primary filter assembly 31 is installed using the filter tank mentioned above, the first bearing flange 5411 can be connected to the two outer sides in the width direction of the bearing section 541, and the second bearing flange 5414 can be connected to an outer side wall in the length direction of the bearing section 541. The second bearing flange 5414 gradually tilts towards the rear end of the bearing section 541 from top to bottom, so as to improve the stability of the bearing section 541.

[0139] In summary, the support section 541 not only supports the weight of the entire device but also provides installation space for the primary filter assembly 31. Furthermore, the sidewalls of the support section 541 can restrict the first inlet passage for the outgoing gas.

[0140] Next, we will introduce the fan installation section 542.

[0141] like Figure 10 and Figure 12As shown, the fan mounting section 542 can be sleeved on the outside of the fan. The fan mounting section 542 may include a first section and a second section connected to the first section. The first section of the fan mounting section 542 can be connected to the upper end of the supporting section 541. From top to bottom, the first section of the fan mounting section 542 gradually bends towards the inside of the fan mounting section 542. In addition, the second section of the fan mounting section 542 can be cylindrical. The cross-sectional radius of the second section of the fan mounting section 542 is smaller than that of the supporting section 541, so that when the gas passes through the fan, due to the change in cross-section, the second section of the fan mounting section 542 is closer to the fan, causing the gas to concentrate towards the fan, so that the fan can guide the gas. In addition, the first section of the fan mounting section 542 can also serve to connect the supporting section 541 and the second section of the fan mounting section 542, so that the gas is guided towards the center.

[0142] Optionally, such as Figure 9 As shown, a stabilizing plate 5421 can be connected to the outside of the fan mounting section 542. The stabilizing plate 5421 can span the first and second sections of the fan mounting section 542 to improve the load-bearing capacity of the fan mounting section 542.

[0143] Optionally, such as Figure 9 As shown, a fixing plate 545 can be connected to the fan mounting section 542, and the fixing plate 545 can extend outward from the side wall of the fan mounting section 542. The fixing plate 545 can be connected to other components using fasteners, so that the fan mounting section 542 can be connected to other components.

[0144] Optionally, the fixing plate 545 is provided with a through hole or a threaded hole, and the fixing plate 545 may be provided with a hole position rib 5451. The hole position rib 5451 may be arranged around the outer periphery of the through hole or the threaded hole in order to improve the structural strength at the location of the through hole or the threaded hole.

[0145] Optionally, the fixing plate 545 may also be provided with peripheral ribs 5452, which can be arranged around the outer periphery of the fixing plate 545 to improve the structural strength of the fixing plate 545.

[0146] Optionally, the fixing plate 545 may also be provided with crisscrossing stabilizing ribs 5453. The stabilizing ribs 5453 may have at least two directions, and a stabilizing rib 5453 in one direction may intersect with at least one stabilizing rib 5453 in another direction, so as to further improve the structural strength of the fixing plate 545.

[0147] Optionally, the hole-position ribs 5451, the outer ribs 5452, and the stabilizing ribs 5453 can be connected in pairs. That is, at least one stabilizing rib 5453 is connected to either the hole-position rib 5451 or the outer rib 5452 to improve the overall integrity of the fixing plate 545.

[0148] Optionally, a connecting rib 5455 may be provided between the fixed plate 545 and the stabilizing plate 5421. The connecting rib 5455 may extend from the stabilizing plate 5421 toward the fixed plate 545, which can not only support the fixed plate 545, but also improve the overall integrity of the fan installation section 542.

[0149] It is worth noting that the bearing section 541 or the base 51 mounting section may also be provided with the fixing plate 545 mentioned above, so as to realize the connection between the bearing section 541 or the base 51 mounting section and other components.

[0150] In summary, the fan mounting section 542 is used to gradually concentrate and guide the gas towards the fan location, thereby improving the fan's efficiency. Additionally, the sidewall of the fan mounting section 542 can define a second air inlet channel 34, which is connected to the first air inlet channel 33.

[0151] The following describes the mounting section of base 51.

[0152] like Figure 10 As shown, the mounting section of the base 51 can be cylindrical and located on the outside of the base 51. A fixing plate 5431 can be provided inside the mounting section. The two sides of the fixing plate 5431 can be connected to the side wall of the base 51 and the mounting section, respectively, to facilitate the installation of the base 51 and the mounting section. One or more fixing plates 5431 can be provided. Multiple fixing plates can be evenly distributed around the circumference of the base 51 to improve the stability of the connection between the base 51 and the mounting section, and to ensure uniform gas distribution.

[0153] Optionally, such as Figure 10 As shown, the cross-sectional radius of the mounting section of the base 51 is larger than that of the fan mounting section 542 to increase the gas flow channel. Exemplarily, the lower end of the mounting section of the base 51 may be provided with an extension plate 5432, which extends from the mounting section of the base 51 toward the second section of the fan mounting section 542 and connects to the upper end of the second section of the fan mounting section 542. A predetermined distance 5436 is provided between the extension plate 5432 and the side wall of the base 51 to allow gas passage.

[0154] Additionally, the upper end face of the stabilizing plate 5421 mentioned above can be connected to the extension plate 5432 to improve the connection strength between the mounting section of the base 51 and the fan mounting section 542. Furthermore, the lower end of the fixing piece 5431 can be connected to the upper end face of the extension plate 5432, and the extension plate 5432 can support the fixing piece 5431 to improve its structural strength.

[0155] Optionally, Figure 11 Show Figure 10 A magnified view at point I, as shown Figure 10 and Figure 11As shown, the second section of the fan mounting section 542 can be connected to a guide protrusion 5422, which can extend upward to guide the gas upward.

[0156] In addition, such as Figure 10 As shown, the upper end of the mounting section of the base 51 can extend beyond the upper surface of the air inlet of the water tank 11, and can be covered by the lower end of the air outlet hood 41 and the upper end of the water tank 11. Therefore, the gas entering the mounting section of the base 51 can enter the water tank 11 through the air inlet opened on the side wall of the water tank 11. It is worth noting that the connection between the air outlet hood 41 and the mounting section of the base 51 can be referred to the description below. The description of the upper end of the air outlet hood 41 and the water tank 11 can be referred to the above.

[0157] Optionally, such as Figure 7 and Figure 9 As shown, an air inlet recess 5433 may be provided at the rear end of the mounting section of the base 51 near the water tank 11. The air inlet recess 5433 may extend toward the inner side of the mounting section of the base 51. Providing an air inlet recess 5433 can not only reduce the weight of the second base, but also guide the gas.

[0158] For example, Figure 18 A top view of a base 5 is shown, as follows: Figure 9 , Figure 10 as well as Figure 18 As shown, the inner side of the air inlet recess 5433 is connected to the side wall of the bottom wall, and an opening is provided on the outer side of the air inlet recess 5433. Two air inlet recesses 5433 can be provided, and the front ends of the two air inlet recesses 5433 are located at the rear end of the air inlet of the water tank 11 (since the air inlet is located in the arc-shaped part of the water tank 11, the front end of the air inlet recess 5433 can be located at the rear end of the arc-shaped part, that is, the front wall of the air inlet recess 5433 corresponds to the vertical part of the water tank 11), so as to provide air intake space for gas.

[0159] Understandably, the extension plate 5432, the mounting section of the base 51 between the two air inlet recesses 5433, the side wall of the bottom wall, the side wall of the water tank 11, and the front wall of the two air inlet recesses 5433 define a third air inlet channel 35 for the gas, which is connected to the second air inlet channel 34. Therefore, the third air inlet channel 35 should include the position corresponding to the air inlet.

[0160] Optionally, the two air inlet recesses 5433 can be symmetrically arranged along the axis of the water tank 11 to ensure the balance and symmetry of the base 5.

[0161] Optionally, a reinforcing plate 5434 may be provided inside the air inlet recess 5433 to improve the strength of the air inlet recess 5433.

[0162] For example, the two ends of the reinforcing plate 5434 can be respectively connected to the opposite sidewalls of the air inlet recess 5433, and one side of the reinforcing plate 5434 can be connected to the bottom wall of the air inlet recess 5433. Multiple reinforcing plates 5434 can be provided along the axial direction of the second base shell 54 to further improve the structural strength of the air inlet recess 5433.

[0163] Optionally, the upper end of the mounting section of the base 51 may be provided with a limiting groove 5435, and at least a portion of the upper end of the water tank 11 is located on the limiting groove 5435 to limit the position of the upper end of the water tank 11. For example, as mentioned above, the upper end of the water tank 11 is provided with a placement groove 112, and the outer side wall and bottom wall of the placement groove 112 can abut against the limiting groove 5435 to achieve the positioning of the upper end of the water tank 11.

[0164] The flow channels of gas within the second base shell 54 will now be described.

[0165] like Figure 10 As shown, external gas enters the interior of the second base shell 54 under the action of the fan. After passing through the first air inlet channel 33 enclosed by the side wall of the bearing section 541, the gas is evenly distributed by the air inlet grille 544 on it and filtered by the filter screen on the air inlet grille 544, and then enters the second air inlet channel 34 formed by the diagonal flow fan 32 and the side wall of the fan mounting section 542. After exiting the second air inlet channel 34, the gas enters the third air inlet channel 35 enclosed by the side wall of the base 51 mounting section and the side wall of the base 51, and is evenly distributed by the fixing plate 5431 before entering the fourth air inlet channel 36 enclosed by the side wall of the base 51 mounting section and the side wall of the water tank 11. The gas enters the interior of the water tank 11 from the air inlet of the water tank 11 through the fourth air inlet channel 36. In this way, the gas flow in the second base shell 54 is completed.

[0166] It is worth noting that when air is drawn in from below, the fan and motor 22 can operate independently, meaning that the fan and motor 22 can also be driven independently of each other. This situation will be briefly described below.

[0167] Figure 20 Show Figure 2 Partial diagram of the explosion. Figure 21 Show Figure 2 A vertical three-dimensional schematic diagram, such as Figure 20 and Figure 21 As shown, another type of air purification device has a base 5 including a base 51 and a third base shell 55. The third base shell 55 is sleeved on the outside of the base 51 and is used to support the base 51. The third base shell 55 has an air inlet facing downward, and an air inlet channel for gas to pass through is provided between the third base shell 55 and the base 51.

[0168] Optionally, an isolation cover 555 is connected to the bottom end of the base 51. The motor 22 includes a motor body 222 and a motor shaft 221. The isolation cover 555 is sleeved on the outside of the motor body 222 and is used to isolate the motor body 222 from the gas in the air inlet channel. The motor body 222 can be suspended on the base 51 as described above to reduce vibration.

[0169] Optionally, the isolation cover 555 and the base 51 are detachably connected to allow for maintenance of the motor body 222 inside the isolation cover 555. For example, the installation method of the isolation cover 555 and the base 51 can be obtained by referring to the installation method of the base 51 and the motor body 222 mentioned above.

[0170] Optionally, the isolation cover 555 may include a first section and a second section. The first section of the isolation cover 555 abuts against the bottom end of the base 51 and is sleeved on the outside of the motor body 222. The second section of the isolation cover 555 is located at the lower end of the motor body 222 and is used to cover the first section of the isolation cover 555. The fan is connected to the second section of the isolation cover 555.

[0171] The top of the first section of the isolation cover 555 may be provided with a positioning groove, and the bottom of the base 51 may be connected with a positioning flange. When the base 51 and the first section of the isolation cover 555 are connected, the positioning flange on the base 51 is inserted into the positioning groove to achieve quick positioning and installation of the base 51 and the first section of the isolation cover 555.

[0172] In addition, in order to improve the structural strength of the second section of the isolation cover 555 and make it suitable for the installation of the fan, the side of the second section of the isolation cover 555 facing the base 51 may be provided with a fan reinforcement structure. The method of setting the fan reinforcement structure can be found above.

[0173] Furthermore, in order to install a fan reinforcement structure on the second section of the isolation cover 555, the first section and the second section of the isolation cover 555 can be machined separately. For example, the bottom end of the first section and the top end of the second section of the isolation cover 555 can be positioned and installed using the positioning groove and positioning flange mentioned above.

[0174] Optionally, the second section of the isolation cover 555 can be suspended and mounted on the base 51 by fasteners. The first section of the isolation cover 555 can be suspended and mounted on the base 51 by fasteners to improve the connection strength between the base 51 and the isolation cover 555; the first section of the isolation cover 555 can also simply abut against the bottom end of the base 51 and be pressed against the base 51 by the clamping force between the second section of the isolation cover 555 and the base 51.

[0175] like Figure 20 and Figure 21As shown, the third base shell 55 can be compared to the second base shell 54, and from bottom to top, it may also include a fan mounting section 551, a fan mounting section 552, and a base mounting section 553.

[0176] The fan mounting section 551 defines a first air inlet channel 33. The fan mounting section 551 may be equipped with the aforementioned primary filter assembly to perform preliminary adsorption and filtration on the gas entering the first air inlet channel 33. The fan mounting section 552 defines a second air inlet channel 34. The upper end of the fan mounting section 551 may be connected to a first guide protrusion arranged in a ring shape. The first guide protrusion is located below the fan and bends inward toward the fan to guide the gas smoothly into the fan.

[0177] The base mounting section 553 defines a third air inlet channel 35, which connects to the air inlet of the water tank 11. The difference between the third base shell 55 and the second base shell 54 is that the fan mounting section 552 and the base mounting section 553 are machined separately. An isolation seat 554 is provided between the fan mounting section 552 and the base mounting section 553. The isolation seat 554 is fitted onto and connected to the outside of the isolation sleeve. The isolation seat 554, the fan mounting section 552, and the base mounting section 553 are arranged opposite to and connected to each other. The fan mounting section 552 supports the isolation seat 554, and the fan mounting section 552 and the isolation seat 554 can be connected together by fasteners. The isolation seat 554 and the base mounting section 553 can be positioned and installed using the positioning groove and positioning flange mentioned above.

[0178] Optionally, a first support plate 556 is provided between the isolation sleeve and the isolation seat 554, which can connect the isolation sleeve and the isolation seat 554 together. One or more first support plates 556 can be provided, which can divide the gap between the isolation sleeve and the isolation seat 554 into several areas to facilitate the passage of gas and to evenly distribute the gas entering the third air inlet channel 35 so that it enters the air inlet of the water tank 11 evenly.

[0179] Furthermore, the first support plate 556 is inclined relative to the axial direction of the isolation cover 555, and the inclination direction of the first support plate 556 is the same as the rotation direction of the fan to facilitate the passage of gas. In addition, a second support plate 557 is provided between the isolation cover 555 and the isolation seat 554, and the second support plate 557 is connected to the first support plate 556 to improve the connection strength between the isolation cover 555 and the isolation seat 554. From bottom to top, the second support plate 557 gradually inclines away from the first support plate 556, so that an acute angle is formed between the first support plate 556 and the second support plate 557 to facilitate the passage and positioning of wires.

[0180] Understandably, for a situation where the fan and motor 22 do not share a common drive source, a possible airflow path for the gas is as follows: Under the action of the fan, the dust-laden gas from the outside enters the first air intake channel 33 through the air inlet below the third base shell 55, i.e., the air intake of the bearing section 551, and is filtered by the primary filter assembly. It then enters the second air intake channel 34, is guided by the fan in the second air intake channel 34 to flow circumferentially towards the fan, continues to rise into the third air intake channel 35, and enters the water tank 11 through the third channel.

[0181] The following describes the air outlet 4 with a bottom air inlet:

[0182] First, for devices that draw air from below, the fan can be located at either the lower or upper end of the water tank 11. The air outlet hood 41 is a component that guides the gas flowing out of the water tank 11. The air outlet hood 41 is generally located at the upper end of the water tank 11, therefore the fan can be installed inside or outside the air outlet hood 41. The configuration of the fan being installed inside the air outlet hood 41 can be found above. The following description mainly focuses on the case where no fan is installed inside the air outlet hood 41.

[0183] Secondly, depending on the location of the air outlet of the water tank 11, the air outlet cover 41 can have at least two different configurations. Of course, the configuration of the air outlet cover 41 is not limited to this; the following are just examples.

[0184] One possible implementation is, such as Figure 9 and Figure 10 As shown, an air outlet hood 41 may be provided at the upper end of the water tank 11, and the air outlet hood 41 may cover the upper end of the base mounting section 543. The air outlet hood 41 may cover the upper openings of the water tank 11 and the base mounting section 543. Therefore, the air outlet hood 41 located at the upper end of the base mounting section 543 and the water tank 11 may be equivalent to the air inlet baffle mentioned above. The air outlet hood 41 may include a first guide shell 435 and a second guide shell 436 communicating with the side wall of the first guide shell 435. The first guide shell 435 is sleeved on the upper end of the water tank 11 and is sealed to the upper side wall of the water tank 11. Exemplarily, a sealing element is provided between the first guide shell 435 and the upper end of the water tank 11, and the sealing element includes, but is not limited to, a sealing gasket.

[0185] Optionally, a second guide shell 436 extends from the first guide shell 435 toward the outside of the air outlet shroud 41. The second guide shell 436 has an opening toward the outside of the air outlet shroud 41, which serves as the air outlet of the air outlet shroud 41. Additionally, an annular mounting protrusion 413 is connected to the upper shell of the second guide shell 436, extending downwards. The upper end of the base mounting section 543 is embedded inside the mounting protrusion 413. The base mounting section 543 and the mounting protrusion 413 are sealed together to prevent gas leakage.

[0186] Optionally, from the axis of the first guide shell 435 to the outer periphery of the first guide shell 435, the upper wall of the second guide shell 436 gradually slopes upward in order to increase the air outlet area of ​​the second guide shell 436.

[0187] Optionally, such as Figure 9 As shown, the air outlet of the air outlet hood 41 may include a first air outlet and a second air outlet. There may be two first air outlets, which may be symmetrically arranged with respect to the axis of the air outlet hood 41. There may be two second air outlets between the two first air outlets, which may also be symmetrically arranged with respect to the axis of the air outlet hood 41, so as to direct the purified air to the left, right, and rear (or front) sides as shown in the figure.

[0188] Optionally, the first guide shell 435 may be provided with a reinforcing structure to improve the structural strength of the air outlet shroud 41. The reinforcing structure may also include a ring-shaped reinforcing protrusion and a radially arranged radial protrusion.

[0189] In another possible implementation, Figure 19 A schematic diagram of another type of washing section is shown, such as Figure 2 , Figures 19-21 As shown, the air inlet and air outlet of water tank 11 can both be located on the side wall of the water tank, and the air outlet of water tank 11 is higher than the air inlet of water tank 11. The upper water-blocking structure 15 mentioned above is provided between the air inlet and air outlet of water tank 11 so that the air inlet and air outlet of water tank 11 will not interfere with each other.

[0190] Optionally, the top of the base 5 is located between the air inlet and the air outlet of the water tank 11, and the top of the base 5 is used to guide the gas in the air inlet channel into the air inlet of the water tank 11. The top of the base 5 is also the top of the base mounting section 543, and the top of the base mounting section 543 is connected to the top of the base 51 to form a third air inlet channel 35. This can block the upward flow of gas in the third air inlet channel 35, turning it into a horizontal flow, and then allowing it to enter the water tank 11 from the air inlet.

[0191] Optionally, the top of the water tank 11 is open, and the top of the water tank 11 is provided with a cover 44 for covering the opening of the water tank 11. The cover 44 is used to guide the gas in the water tank 11 to flow towards the air outlet of the water tank 11. The cover 44 may be provided with a guide recess 441, which has an upward opening. From top to bottom, at least part of the cross-section of the guide recess 441 gradually decreases so that the gas flowing out from the middle of the water tank 11 can flow towards the side wall of the water tank 11.

[0192] Optionally, an air outlet hood 41 is fitted onto the outside of the air outlet of the water tank 11. The air outlet hood 41 has an air inlet and an air outlet. The air inlet of the air outlet hood 41 is connected to the air outlet of the water tank 11. From the air inlet to the air outlet of the air outlet hood 41, at least a portion of the air outlet hood 41 gradually expands outward in the axial direction of the water tank 11 to increase the airflow at the air outlet of the air outlet hood 41. Furthermore, Figure 22 Show Figure 2 A cross-sectional view at the center of the air vent, as shown below. Figure 22 As shown, from the air inlet of the air outlet 41 to the air outlet of the air outlet 41, at least part of the air outlet 41 is gradually tapered in the circumferential direction of the water tank 11 so that the gas flows out to the air outlet in a concentrated manner.

[0193] Optionally, Figure 23 A three-dimensional schematic diagram of an air outlet shroud and a base is shown, such as Figure 23 As shown, the air outlet cover 41 and the base 5 can be connected together by fasteners. The air outlet cover 41 and the base 5 can be connected by the positioning edge strip and positioning groove mentioned above to achieve the positioning and assembly of the air outlet cover 41 and the base 5.

Claims

1. An air purification device that draws air in from the bottom, characterized in that, include: The substrate has an air inlet facing downwards; A water tank is disposed within the substrate, and the substrate is provided with an air inlet channel. The water tank has an air inlet and an air outlet. The air inlet of the water tank is disposed on the side wall of the water tank and is connected to the air inlet channel. A water curtain assembly is disposed inside the water tank and is used to clean the gas flowing from the air inlet to the air outlet of the water tank using water in the water tank. A fan is used to drive the gas outside the water tank into the water tank through the air inlet. The top of the water tank is open, and the air purification device that draws air from the bottom also includes a cover. The cover is used to seal the opening of the water tank and to guide the gas in the water tank to flow to the air outlet of the water tank. The cover is provided with a guide recess, the guide recess having an upward opening, and the cross-section of at least a portion of the guide recess gradually decreases from top to bottom; The washing assembly includes a hollow cylinder, the lower end of which is connected to the lower end of a water tank; The air purification device also includes a power unit that causes the cylinder to rotate about its own axis, so that the water entering the cylinder gradually moves upward along the inner wall of the cylinder under the action of rotational force. The power unit includes a rotating shaft, a reducer, and a motor, the motor having a motor shaft; The reducer includes a first helical gear rotatably mounted on the base and a second helical gear rotatably connected to the bottom of the water tank. The first helical gear and the second helical gear mesh with each other, and the second helical gear is located above the first helical gear. The motor shaft is coaxially connected to the first helical gear. The rotating shaft includes a first end and a second end. The first end of the rotating shaft is coaxially connected to the second helical gear, and the second end of the rotating shaft is connected to the cylinder.

2. The air purification device with bottom air intake according to claim 1, characterized in that, The air outlet of the water tank is located on the side wall of the water tank, and the air outlet of the water tank is higher than the air inlet of the water tank.

3. The air purification device with bottom air intake according to claim 1, characterized in that, It also includes an air outlet cover fitted on the outside of the water tank. The air outlet cover has an air inlet and an air outlet. The air inlet of the air outlet cover is connected to the air outlet of the water tank. From the air inlet of the air outlet cover to the air outlet of the air outlet cover, at least part of the air outlet cover is gradually expanded outward in the axial direction of the water tank.

4. The air purification device with bottom air intake according to claim 3, characterized in that, From the air inlet of the air outlet hood to the air outlet of the air outlet hood, at least a portion of the air outlet hood is gradually tapered in the circumferential direction of the water tank.

5. The air purification device with bottom air intake according to claim 1, characterized in that, The air inlet of the substrate is equipped with a primary filter device, which is used to adsorb some impurities in the filtered gas.

6. The air purification device with bottom air intake according to claim 1, characterized in that, The bottom end of the substrate is connected to a first guide protrusion arranged in a ring shape. The first guide protrusion is located below the fan and bends toward the inside of the fan.

7. The air purification device with bottom air intake according to claim 2, characterized in that, The top of the base is located between the air inlet and the air outlet of the water tank, and the top of the base is used to guide the gas in the air inlet channel into the air inlet of the water tank.

8. The air purification device with bottom air intake according to claim 1, characterized in that, The air inlet channel is provided with a first support plate, which is used to evenly distribute the gas in the air inlet channel.

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