TWI825026B - air purification device - Google Patents

Abstract

The invention provides an air purification device, which includes: a frame provided with an air inlet and an air outlet; a filter unit disposed in the frame to purify air; and an air supply that blows the air sucked from the air inlet through the filter unit out of the air outlet. The air supply unit includes a motor and a fan blade operating under the control of the motor. A fan blade air inlet is provided on one side of the fan blade in the axial direction, and a fan blade air outlet is provided on the outside of the fan blade in the radial direction. Wherein, the filter unit is arranged opposite to the fan blade air outlet. In the present invention, since the filter unit is arranged opposite the air outlet of the fan blade, the present invention can save the space originally occupied by the filter unit in the axial direction of the fan blade, that is, it can save the thickness of the filter unit, which is conducive to thinning. .

Description

air purification device

The invention relates to an air purification device.

As shown in Figure 1, a general air purification device includes cabinet 1, fan unit 4, high-efficiency filter 8, pre-filter 3, etc. The work of cabinet 1, fan unit 4, high-efficiency filter 8, and pre-filter 3 The axis is set parallel to the ground. Whether it is a high-efficiency filter or a pre-filter, they are respectively located in front or behind the fan unit, that is, on a surface perpendicular to the axis of the fan unit. In order to obtain better filtration effect, it is always necessary to install more filters before and after the fan unit, that is, the fan blades, or to install a thicker high-efficiency filter. Therefore, the body becomes thicker and thicker, which is not conducive to thinning.

The present invention provides an air purification device to at least partially solve the above technical problems.

The air purification device of the present invention includes: a frame provided with an air inlet and an air outlet, a filter unit installed in the frame to purify air, and an air supply unit that blows air sucked from the air inlet through the filter unit out of the air outlet. The unit includes a motor and a fan blade operating under the control of the motor, A fan blade air inlet is provided on one side of the fan blade in the axial direction, and a fan blade air outlet is provided on the outer side of the fan blade in the radial direction, wherein the filter unit is arranged opposite to the fan blade air outlet.

In some embodiments of the present invention, the filter unit is arranged around the fan blade air outlet.

In some embodiments of the present invention, the filter unit is in the shape of a cylindrical quadrilateral, with four corners of the cylindrical quadrilateral protruding and bending outward.

In some embodiments of the present invention, the frame is box-shaped, and the air inlet and the air outlet are respectively provided on parallel or intersecting surfaces of the frame.

In some embodiments of the present invention, the air inlet is provided on the side of the frame, the fan blade suction port is disposed opposite to the bottom surface of the frame, and a pre-filter is provided between the air inlet and the fan blade suction port. The pre-filter comes from the inlet. One end of the air outlet adjacent to the fan blade extends obliquely toward the center of the fan blade suction port and covers the air inlet.

In some embodiments of the present invention, in the air path from the filter unit to the air outlet, in the axial direction of the fan blade, there is a gap between the air outlet and the side of the air supply unit equipped with the motor, and the filter unit and the frame There is a gap between the sides with the air outlet.

In some embodiments of the present invention, the air inlet is provided on the front or back of the frame, and a pre-filter is provided between the air inlet and the fan blade suction port. The pre-filter is arranged parallel to the air inlet and covers the fan blade suction. mouth.

In some embodiments of the present invention, the filter unit includes a first filter unit and a second filter unit divided on the surface along the axial direction of the fan blade. The first filter unit includes a first filter for purifying air; A first bracket accommodates the first filter screen, and the second filter unit includes a second filter screen that purifies air and a second bracket accommodates the second filter screen.

In some embodiments of the present invention, a first inner side opening is provided on the surface of the first bracket opposite to the air outlet of the fan blade, and a first inner side opening is provided on the surface of the first bracket opposite to the first inner side opening. The outer side has an opening, and the second bracket is provided with a second inner side opening on the surface opposite to the fan blade air outlet. A second outer side opening is provided on the surface of the bracket opposite to the second inner side opening. There is a gap between the first bracket and the second bracket and the air supply unit. The first bracket and the second bracket are provided with a sealing portion to seal the gap. .

In some embodiments of the present invention, the first bracket is provided with a first handle for pulling the first filter unit out of the frame, and the second bracket is provided with a second handle for pulling the second filter unit out of the frame.

It can be seen from the above technical solutions that the air purification device of the present invention has at least one of the following beneficial effects: (1) Since the filter unit is arranged opposite to the air outlet of the fan blade, it can save the space that was originally used in the axial direction of the fan blade. The space occupied by the filter unit can save the thickness of the filter unit and is conducive to thinning; (2) Since the air inlet and air outlet of the frame are located on parallel or intersecting surfaces of the frame, the air blown from the air outlet will not Returning to the air inlet can prevent the generation of turbulence; (3) The pre-filter is tilted from the upper end of the air inlet on the side toward the back of the frame and the fan blade suction port, and covers the air inlet. All the inhaled air must pass through the pre-filter, which increases the filtration area of the pre-filter. Even if the air inlet on the side of the frame is relatively long and narrow compared with ordinary air purifiers, it can evenly and efficiently inlet the air for initial purification. There is no need to increase the Pre-filter area increases the thickness of the frame, which is conducive to the thinning of the air purification device; (4) After the air is blown from the fan blade outlet to the surroundings, it directly passes through the surrounding filter units. Since the filter unit is located on the side of the fan blade outlet rather than on the surface of the fan blade that is perpendicular to the axis, the air purification device can save the original cost in the axial direction of the fan blade. The space required to accommodate the filter unit can save the thickness of the filter unit and is conducive to thinning; (5) the filter unit is a cylindrical quadrilateral that surrounds the air outlet of the fan blade. The inner circumference of the filter unit is a quadrilateral. When the horizontal cross-sectional area is the same, the effective filtering area of the inner circumference of the quadrilateral is larger than that of others. The side shape is large, so setting it as a quadrilateral can ensure the effective use of the filter unit. Moreover, the corners of the quadrilateral are provided with outward protruding bends. In this way, where the edges of the inner quadrilateral of the filter unit facing the fan blade outlet meet, the part deformed due to bending is reduced to a minimum, which prevents the corners of the filter unit from becoming dense due to compression and prevents the resistance to air passage from increasing. , making it impossible for the filter unit to filter the air evenly, and even reducing the effective filtration area of the inner periphery. And because the four corners of the filter unit are rounded, it can be formed in one piece, which reduces the production cost of the filter unit and facilitates the forming and installation; (6) Since the sealing part closes the gap between the air supply unit and the first bracket and the second bracket, That is, the gap between the air supply unit and the filter unit is closed, preventing air from flowing out from the gap between the fan blade air outlet and the first bracket or the second bracket, and directly blowing out of the air outlet on the frame without passing through the filter unit. Through the above, the sealing performance is improved to prevent air from not passing through the filter unit; (7) Since the filter unit is composed of two symmetrical first filter units and a second filter unit, the first filter unit has a first outer side opening facing the first handle. Set on one side of the inspection cover. After opening the inspection cover, the user can directly pull the first handle or the second handle to pull the filter unit out of the frame to facilitate maintenance and replacement of the filter; (8) The air inlet is located on the front or back of the frame, and the air outlet is located on the front or back of the frame. When on the side, the pre-filter between the air inlet and the fan blade suction port is arranged parallel to the air inlet and covers the fan blade suction port. The air inlet of the fan blade is arranged facing the air inlet of the frame. After the air is sucked into the fan blade inlet from the air inlet on the front of the frame, it is blown out from the fan blade outlet on the side of the fan blade, then passes through the surrounding filter unit, and then blown out directly from the filter unit to the opposite air outlet, forming an "L" The glyph-shaped air path minimizes the bending of the air path, making the air path smoother when entering the fan blades and blowing out of the filter unit, reducing the loss of air volume and reducing noise; (9) Due to pre-filtration The net is set parallel to the fan blade suction port. On the basis of effectively utilizing the filtration area of the pre-filter, the overall air purification device can save the height caused by the tilt of the pre-filter, further achieve thinness, and ensure smooth airflow. road.

100:Frame

101:Air inlet

102:Air outlet

200:Air supply unit

210:Fan blade

211:Fan blade air inlet

212: Fan blade air outlet

220: Motor

230:shaft

240:Motor fixing plate

300:Filter unit

310: First filter unit

311:First filter

312:First bracket

312a: First inner side opening

312b: First outer side opening

312c: wall

312d:First in command

320: Second filter unit

321: Second filter

322:Second bracket

322a: Second inner side opening

322b: Second outer side opening

322c: wall

322d:Second in command

P1, P2: Tablet

T: convex rib

331:Sealing part

400: Pre-filter unit

A,B: gap

Figure 1 is a schematic structural diagram of an air purification device in the prior art.

Figure 2 is a schematic structural diagram of the frame part of the air purification device in the embodiment of the present invention.

Figure 3 is a schematic structural diagram of the filter unit and the air supply unit of the air purification device in the embodiment of the invention.

Figure 4 is a schematic diagram of the positional relationship between the filter unit and the air supply unit of the air purification device in the embodiment of the present invention.

FIG. 5 is a detailed schematic diagram of the first bracket and the second bracket part of the filter device in FIG. 3 .

Figure 6 is a schematic diagram of the sealing portion of the bracket and the air supply unit in the air purification device according to the embodiment of the present invention.

Figure 7 is a schematic diagram of the gap A in the air purification device according to an embodiment of the present invention.

Figure 8 is a cross-sectional view of an air purification device according to an embodiment of the present invention.

Figure 9 is a schematic diagram of the air path of the air purification device according to an embodiment of the present invention.

Figure 10 is a schematic diagram of the filter unit part of the air purification device according to an embodiment of the present invention.

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to specific embodiments and the accompanying drawings.

1. First Embodiment

First of all, it should be noted that the upper, lower, left, right, side, front, back, etc. mentioned in this embodiment are all based on the state of the air purification device when the axis of the fan blade is parallel to the ground. The front refers to the state where the axis of the fan blade is parallel to the ground. The surface of the air purifier facing the room, the thickness, etc. all refer to the length of the air purifier in the axial direction of the fan blades.

In a first embodiment of the present invention, an air purification device is provided. Figure 2 is a schematic structural diagram of the frame part of the air purification device in the embodiment of the present invention. As shown in Figure 2, the air purification device in this embodiment: frame 100, air supply unit 200, filter unit 300 and pre-filter unit 400.

The frame 100 is a hollow rectangular parallelepiped that forms the outer shell of the air purification device. It has an air inlet 101 for air to enter and an air outlet 102 for air to blow out. The air inlet 101 and the air outlet 102 are respectively disposed on parallel or intersecting surfaces of the frame 100 , that is, the air inlet 101 and the air outlet 102 are not disposed on the same surface of the frame 100 . Possible combinations include: (1) the air inlet 101 is located on the front or back of the frame 100, and the air outlet 102 is located on the side of the frame 100; or (2) the air inlet 101 is located on the side of the frame 100, and the air outlet 102 is located on the side of the frame 100. on the front or back of the frame 100; or (3) the air inlet 101 and the air outlet 102 are respectively provided on the front and back of the frame 100.

In this embodiment, the air inlet 101 of the frame 100 is located on the side, and the air outlet 102 is located on the front, as shown in FIG. 2 .

Figure 3 is a schematic structural diagram of the filter unit and the air supply unit of the air purification device in the embodiment of the invention. As shown in FIG. 3 , the air supply unit 200 includes: fan blades 210 , a motor 220 and a shaft 230 . The fan blade 210 is a turbine fan blade. Driven by the motor 220 , the fan blade 210 rotates with the shaft 230 as the center of the circle. On the surface of the fan blade perpendicular to the shaft 230, there is a fan blade suction port 211 for sucking air. The fan blade suction port 211 is located on the side close to the air inlet 101 of the frame. A fan blade air outlet 212 for blowing out air is provided on the side of the fan blade. The surface of the fan blade air outlet 212 is parallel to the shaft 230 . The air enters from the blade suction port 211 of the fan blade and is blown out from the fan blade outlet 212 on the side. The fan blade air inlet 211 is arranged opposite to the bottom surface of the frame 100 .

The filter unit 300 filters the sucked air into clean air and then blows it out. The filter unit 300 is arranged opposite to the fan blade air outlet 212 , that is, on the side of the fan blade 210 . The filter unit 300 corresponds to the fan blade output A week or part of the tuyere 212. In this embodiment, the filter unit 300 is arranged around the fan blade 210 and is in the shape of a cylindrical quadrilateral. The four corners of the cylindrical quadrilateral are protruding and bent outwards, that is, the corners are rounded.

In this embodiment, by disposing the filter unit opposite to the air outlet of the fan blade, the space originally occupied by the filter unit in the axial direction of the fan blade can be saved, that is, the thickness of the filter unit can be saved, which is conducive to thinning.

The filter unit 300 is arranged to cover the height of the fan blade air outlet 212 in the axial direction of the fan blade 210 , that is, the thickness of the filter unit 300 is greater than or equal to the height of the fan blade air outlet 212 .

The filter unit 300 includes two first filter units 310 and a second filter unit 320 that are divided in the axial direction of the fan blades. The first filter unit 310 includes: a first filter screen 311; and a first bracket 312 that accommodates the first filter screen 311. The second filter unit 320 includes: a second filter screen 321 and a second bracket 322 that accommodates the second filter screen 321. In this embodiment, the first filter unit 310 and the second filter unit 320 are evenly divided by the plane where the axis 230 of the fan blade is located, that is, the first filter unit 310 and the second filter unit 320 are symmetrical. The first filter unit 310 and the second filter unit 320 form a cylindrical quadrilateral filter unit that surrounds the fan blade 210 . The cylindrical quadrangular shape refers to a shape in which the inner circumference of the filter unit has a space capable of accommodating the fan blades 210 .

The first filter 311 and the second filter 321 are both high-efficiency filters.

FIG. 5 is a detailed schematic diagram of the first bracket and the second bracket part of the filter device in FIG. 3 . Referring to Figure 5, the first bracket 312 includes: a wall 312c surrounding a space for accommodating the first filter; a first inner side opening 312a for air to enter; and a first outer side opening 312b for air to blow out. The first inner side opening 312a is provided on the surface of the first bracket 312 opposite to the fan blade air outlet 212. The first outer side opening 312b is provided on the other side of the first bracket 312 opposite to the first inner side opening 312a. After the air is blown out from the fan blade air outlet 212 , it enters the filter through the first inner side opening 312 a , and then is blown out of the first filter unit 310 through the first outer side opening 312 b .

The second bracket 322 includes: a wall 322c surrounding a space for accommodating the second filter; a second inner side opening 322a for air to enter, and a second outer side opening 322b for air to blow out. The second inner side opening 322a is provided on the surface of the second bracket 322 opposite to the fan blade air outlet 212. The second outer side opening 322b is provided on the other side of the second bracket 322 opposite to the second inner side opening 322a. After the air is blown out from the fan blade outlet 212 , it enters the filter through the second inner side opening 322 a , and then is blown out of the second filter unit 320 through the second outer side opening 322 b .

The walls of the first bracket 312 and the second bracket 322 are composed of two upper and lower flat plates P1 and P2. The side of the flat plates facing the fan blade 210 is provided with a fan-shaped curved edge. The inner wall of the flat plate is provided with ribs T that engage the first filter 311 and the second filter 321 .

The first bracket 312 and the second bracket 322 are respectively provided with a first handle 312d and a second handle 322d for pulling the first filter unit 310 and the second filter unit 320 out of the frame 100.

There is a gap B between the first bracket 312 and the second bracket 322 and the air supply unit 200. The first bracket 312 and the second bracket 322 are provided with sealing parts that seal the gap B. The so-called sealing part is sealing cotton that seals the gap B between the first bracket 312 and the second bracket 322 and the air supply unit 200 .

The air inlet 101 of the frame, the fan blade air inlet 211, the fan blade air outlet 212, the filter unit 300, and the frame's air outlet 102 form an "S" shaped air path that the air must pass through sequentially.

The pre-filter unit 400 is a pre-filter. The pre-filter is located in the above-mentioned air path, upstream of the fan blade suction port 211 .

The pre-filter is in the shape of a flat plate, extends obliquely from the end of the air inlet 101 close to the fan blade toward the center of the fan blade, is connected to the frame 100 , and covers the air inlet 101 . The so-called coverage means that visually, when looking from the pre-filter to the air inlet 101 on the frame, the pre-filter covers the entire air inlet 101, and there is a certain distance between the pre-filter and the air inlet 101. It does not mean that The pre-filter is in contact with the air inlet 101.

Figure 7 is a schematic diagram of the gap between the fan blades and the air outlet in the air purification device according to an embodiment of the present invention. Figure 8 is a schematic diagram of a motor fixing plate in an air purification device according to an embodiment of the present invention. As shown in the picture As shown in FIGS. 7 and 8 , a gap A is provided between the back side of the fan blade 210 , that is, the side opposite to the side with the air inlet on the fan blade, and the air outlet 102 . In the air path from the filter unit 300 to the air outlet 102, in the axial direction of the fan blade, there is a gap A between the air outlet 102 and the side of the air supply unit with the motor. There is a gap A between the filter unit 300 and the frame 100. A gap A is also provided between one side of the air outlet 102. In this embodiment, the gap A is the gap between the air outlet 102 and the motor fixing plate 240, and the gap between the filter unit 300 and the side of the frame on which the air outlet 102 is provided. These two gaps form part of the air path for air to pass through. The so-called motor fixing plate 240 is a bracket provided on the back of the fan blade for fixing the motor 220. There is a gap A between the side of the frame 100 with the air outlet 102 and the upper surface of the filter unit 300.

In this embodiment, since the air inlet 101 and the air outlet 102 of the frame are located on parallel or intersecting surfaces of the frame, the air blown from the air outlet 102 will not flow back to the air inlet 101, thus preventing the generation of turbulent flow.

Due to the suction of the air supply unit 200, the air enters the frame 100 from the air inlet 101 provided on the side of the frame 100, is initially filtered by the pre-filter, and is then sucked into the fan blade through the fan blade suction port 211.

The pre-filter is tilted from the upper end of the air inlet on the side toward the back of the frame and the fan blade air inlet 211, and covers the air inlet 101. All air sucked in from the frame air inlet 101 must pass through the pre-filter, which increases Due to the filtration area of the pre-filter, even if the air inlet 101 on the side of the frame 100 is relatively long and narrow compared to a general air purifier, the air can be uniformly and efficiently purified for the first time. There is no need to increase the thickness of the frame 100 in order to increase the area of the pre-filter. , which is conducive to the thinning of the air purification device.

After the air is blown around from the fan blade outlet 212, it directly passes through the surrounding filter unit 300. Since the filter unit 300 is disposed on the side of the fan blade air outlet 212 instead of on the surface of the fan blade perpendicular to the axis 230, the air purification device can save time on the fan blade in the direction of the fan blade axis 230. The space originally required to accommodate the filter unit 300 in the axial direction can save the thickness of the filter unit, which is beneficial to thinning.

In this embodiment, the filter unit 300 is a high-efficiency filter. By adopting this technical solution, the overall thickness of the high-efficiency filter can be saved. In the same way, no matter what type of filter the filter unit is, as long as this technical solution is adopted, the overall thickness of the filter can be saved to achieve thinness.

As shown in FIG. 3 , the filter unit 300 is a cylindrical quadrangle surrounding the fan blade air outlet 212 . The inner periphery of the filter unit 300 is a quadrilateral. When the horizontal cross-sectional area is the same, the effective filtering area of the inner periphery of the quadrilateral is larger than that of other polygons. Therefore, the quadrilateral can ensure the effective use of the filter unit 300.

Moreover, the corners of the quadrilateral are provided with outward protruding bends. In this way, the deformation due to bending of the edges of the inner quadrilateral of the filter unit 300 facing the fan blade air outlet 212 is minimized, which prevents the corners of the filter unit 300 from becoming dense due to compression and preventing air from passing through. The resistance increases, making it impossible for the filter unit 300 to filter the air evenly, and even reducing the effective filtering area of the inner periphery.

In addition, since the four corners of the filter unit 300 are rounded, it can be integrally formed, which reduces the production cost of the filter unit and facilitates molding and installation.

In the same way, on the principle of not bending and compressing the filter unit, the filter unit may also be a right-angled quadrilateral or a polygon without rounded corners.

In this embodiment, it is preferable that the filter unit 300 surrounds the fan blade air outlet 212, but as long as the filter unit 300 is arranged opposite to the fan blade air outlet 212, the filter unit 300 can also be opposite to only a part of the fan blade air outlet 212. Correspondingly, that is, it is not a fully enclosed state, and even if only one side is left, the effect of thinning can be obtained.

In addition, in a general air purification device, since the filter unit 300 is arranged perpendicularly to the axis of the fan blade 210, that is to say, after the air is blown out from the fan blade outlet 212 on the side of the fan blade, it first hits the air path wall, and then turns upward. Pass through the filter unit 300. At this time, due to the high-speed flow of air blown out from the fan blade outlet 212, the air with too high wind speed hits the air path wall, causing turbulence and noise, and causing a large air volume loss.

Figure 9 is a schematic diagram of the air path of the air purification device according to an embodiment of the present invention. As shown in Figure 7, in this embodiment, after the air is blown out from the fan blade air outlet 212, it first passes through the filter unit 300, and then turns upward to the air outlet 102 provided on the front of the frame under the guidance of the air path wall. The high-speed flowing air blown out from the fan blade outlet 212 is filtered by the filter unit 300, and the wind speed is reduced. It will not hit the air path wall at high wind speed. At the same time, it can be smoothly turned to the air outlet 102 located on the front of the frame, reducing the risk of air flow. Loss and turbulence caused by collision with the wind path wall, reducing noise and making the wind path smoother. Therefore, even if the filtration area of the filter unit 300 surrounding the fan blade air outlet is smaller than that of a general flat filter unit 300, a large air volume can be ensured, thereby ensuring the filtration effect and air volume while being thinner.

Figure 6 is a schematic diagram of the filter unit part of the air purification device according to an embodiment of the present invention. As shown in FIG. 6 , there is a gap B in the horizontal direction between the first bracket 311 and the second bracket 322 and the air supply unit 200 . The first bracket 311 and the second bracket 322 are provided with a sealing portion 331 for sealing the gap. The two symmetrical first filter units 310 and the second filter unit 320 form a closed filter unit 300 surrounding the fan blade air outlet 212 . The first handle 312d and the second handle 322d are respectively provided on the inspection side of the first filter unit 310 and the second filter unit 320.

Since the sealing portion 331 closes the gap between the air supply unit 200 and the first bracket 311 and the second bracket 322, that is, the gap between the air supply unit 200 and the filter unit 300 is closed, preventing air from flowing from the fan blade air outlet 212 to the first bracket. The air flows out from the gap between the bracket 311 or the second bracket 322 and directly blows out of the air outlet 102 on the frame 100 without passing through the filter unit 300 . Through the above, the sealing performance is improved and air is prevented from not passing through the filter unit 300 .

In addition, since the filter unit 300 is composed of two symmetrical first filter units 310 and second filter units 320, the first filter unit 310 is disposed with the first outer side opening 312b and the first handle 312d facing the inspection cover. After opening the inspection cover, the user can directly pull the first handle 312d or the second handle 322d to pull the filter unit out of the frame 100 to facilitate maintenance and replacement of the filter.

In this embodiment, preferably, the filter unit 300 is composed of two symmetrical first filter units 310 and second filter units 320, but it may also be composed of two or more asymmetric or symmetric filter units.

At this point, the introduction of the air purification device according to the first embodiment of the present invention is completed.

2. Second Embodiment

In the second embodiment of the present invention, another air purification device is also provided. In the following, in this embodiment, the same structure as in Embodiment 1 will not be described again. Only the features of this embodiment will be described below.

In this embodiment, the air inlet is located on the front or back of the frame, and when the air outlet is located on the side, the pre-filter between the air inlet and the fan blade suction port is arranged parallel to the air inlet and covers the fan blade suction port. The air inlet of the fan blade is arranged facing the air inlet of the frame.

After the air is sucked into the fan blade inlet from the air inlet on the front of the frame, it is blown out from the fan blade outlet on the side of the fan blade, then passes through the surrounding filter unit, and then blown out directly from the filter unit to the opposite air outlet, forming an "L" The glyph-shaped air path minimizes the bending of the air path, making the air path smoother when entering the fan blades and blowing out of the filter unit, reducing the loss of air volume and reducing noise.

In addition, since the pre-filter is arranged parallel to the fan blade suction port, on the basis of effectively utilizing the filtration area of the pre-filter, the overall air purification device can save the height caused by the tilt of the pre-filter, further achieving thinner design. Ensures a smooth air path.

So far, two embodiments of the present invention have been described in detail with reference to the accompanying drawings. It should be noted that implementation methods not shown or described in the drawings or the text of the specification are all forms known to those of ordinary skill in the technical field and have not been described in detail. In addition, the above definitions of each element and method are not limited to the various specific structures, shapes or methods mentioned in the embodiments, which can be simply modified or replaced by those of ordinary skill in the art.

Based on the above description, those skilled in the art should have a clear understanding of the air purification device of the present invention.

It should also be noted that the directional terms mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right", etc., are only for reference to the directions of the drawings, not used to limit the scope of protection of the present invention. Throughout the drawings, the same elements are designated by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may obscure the understanding of the invention.

Moreover, the shapes and sizes of the components in the figures do not reflect the actual sizes and proportions, but only illustrate the contents of the embodiments of the present invention. Additionally, within a request, any reference symbols placed between parentheses should not be constructed as a limitation on the request.

Furthermore, the word "comprises" does not exclude the presence of elements or steps not listed in the request. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

Serial numbers used in the specification and claims, such as "first", "second", "third", etc., are used to modify the corresponding components. This does not in itself mean that the component has any serial number, nor does it mean that the component has any serial number. Representing the order of a certain component with another component, or the order of a manufacturing method, the use of these serial numbers is only used to clearly distinguish one component with a certain name from another component with the same name.

Similarly, it is to be understood that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment in order to streamline the invention and aid in the understanding of one or more of the various inventive aspects. , figure, or description thereof. This method of invention, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following patent scope reflects, inventive aspects lie in less than all features of a single embodiment of the foregoing invention. Thus, the patent scope following the Detailed Description is hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

The above-mentioned specific embodiments further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above-mentioned are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

100:Frame

101:Air inlet

102:Air outlet

Claims (7)

An air purification device includes: a frame provided with an air inlet and an air outlet; a filter unit disposed in the frame to purify air; and blowing out the air sucked from the air inlet and passing through the filter unit. An air supply unit for the air outlet; the air supply unit includes: a motor; and a fan blade operating under the control of the motor; a fan blade suction port is provided on one side of the fan blade in the axial direction; A fan blade air outlet is provided on the outside in the radial direction; it is characterized in that the filter unit is arranged opposite to the fan blade air outlet, and the filter unit is a cylindrical quadrilateral, and the four corners of the cylindrical quadrilateral are in the direction of The outer protrusion is curved; wherein the frame is box-shaped, the frame includes a front surface perpendicular to the axial direction of the fan blade, and a side surface parallel to the radial direction of the fan blade, and the air outlet is provided on the front surface The air inlet is provided on the side of the frame on a side away from the air outlet, and a certain distance is maintained between the air inlet and the air outlet in the axial direction of the fan blade. The air purification device according to claim 1, wherein the filter unit is arranged surrounding the fan blade air outlet. The air purification device according to claim 1, wherein the fan blade air inlet is arranged opposite to the bottom surface of the frame, and a pre-filter is provided between the air inlet and the fan blade air inlet, so The pre-filter extends obliquely from an end of the air inlet close to the fan blade to the center of the air inlet of the fan blade, and covers the air inlet. The air purification device according to claim 1, wherein in the air path from the filter unit to the air outlet, in the axial direction of the fan blade, the air outlet and the air supply unit are provided with motors There is a gap between one side of the filter unit and the side of the frame on which the air outlet is provided. The air purification device according to claim 2, wherein the filter unit includes a first filter unit and a second filter unit divided on a plane in the axial direction of the fan blade, and the first filter unit The unit includes a first filter that purifies the air and a first bracket that accommodates the first filter. The second filter unit includes a second filter that purifies the air and a second bracket that accommodates the second filter. The air purification device according to claim 5, wherein a first inner side opening is provided on the surface of the first bracket opposite to the air outlet of the fan blade, and the first inner side opening is provided on the first bracket. A first outer side opening is provided on the surface opposite to the inner side opening. A second inner side opening is provided on the second bracket on the surface opposite to the fan blade air outlet. The second bracket is provided with the first outer side opening. A second outer side opening is provided on the surface opposite to the second inner side opening; there is a gap between the first bracket and the second bracket and the air supply unit. A sealing portion is provided to seal the gap. The air purification device according to claim 6, wherein the first bracket is provided with a first handle for pulling the first filter unit out of the frame, and the second bracket is provided with a first handle for pulling the first filter unit out of the frame. A second handle for pulling the second filter unit out of the frame.