TW201915404A - Air purifying device for saving the space originally occupied by the filter unit in the axial direction of the fan blade so as to reduce the thickness of the filter unit thereby contributing to thinning - Google Patents

Abstract

The present invention provides an air purifying device, which includes: a frame provided with an air inlet and an air outlet; a filter unit disposed in the frame for purifying air; and a blowing unit for blowing the air that is sucked from the air inlet and passes through the filter unit out of the air outlet. The blowing unit includes: a motor; and fan blades rotating under the control of the motor, wherein a fan blade air inlet is disposed at one side of the fan blade in the axial direction, and a fan blade air outlet is disposed at the outer side of the fan blade in the radial direction. The filter unit and the fan blade outlet are arranged oppositely. In the present invention, since the filter unit and the fan blade air outlet are arranged oppositely, it is able to save the space originally occupied by the filter unit in the axial direction of the fan blade. Namely, the present invention can reduce the thickness of the filter unit, thereby contributing to thinning.

Description

Air purification device

The invention relates to an air purification device.

As shown in Fig. 1, a general air purification device includes a cabinet 1, a fan group 4, an efficient filter 8, a pre-filter 3, and the like. The cabinet 1, a fan group 4, an efficient filter 8, and a pre-filter 3 work. The axis is set parallel to the ground. Both the high-efficiency filter and the pre-filter are set on the front or back of the fan unit, respectively, that is, on the plane perpendicular to the axis of the fan unit. In order to obtain a better filtering effect, always install more filters or thicker high-efficiency filters in front of the fan unit, that is, the fan blades. Therefore, the body becomes thicker and thinner.

(1) Technical problems to be solved

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

(Two) technical solutions

The air purifying device of the present invention comprises a frame provided with an air inlet and an air outlet, a filter unit provided in the frame and purifying air, and an air supply unit for blowing air out of the air outlet through the filter unit after being sucked in from the air inlet, The unit includes a motor and a fan that operates under the control of a motor. A fan blade suction port is provided on one side in the axial direction of the fan blade, and a fan blade air outlet is provided on the outer side in the radial direction of the fan blade. The unit is opposite to the fan blade air outlet.

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

In some embodiments of the present invention, the filter unit is a cylindrical quadrangular shape, and four corners of the cylindrical quadrangular shape protrude and bend outward.

In some embodiments of the present invention, the frame is box-shaped, and the air inlet and the air outlet are respectively disposed on surfaces of the frame that are parallel or intersect with each other.

In some embodiments of the present invention, the air inlet is provided on the side of the frame, the fan blade air inlet is opposite to the bottom surface of the frame, a pre-filter is arranged between the air inlet and the fan blade, and the pre-filter One end of the air outlet is inclined and extended toward the center of the air inlet of the fan blade 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, a gap is provided between the air outlet and the side of the air supply unit provided with the motor, and the filter unit and the frame A gap is provided between the side where the air outlet is provided.

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 arranged between the air inlet and the fan blade suction port, and 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 filtering unit includes a first filtering unit and a second filtering unit which are divided on a plane where the axial direction of the fan blade is located. The first filtering unit includes a first filtering net for purifying air and A first support for accommodating the first filter, and a second filter unit including a second filter for purifying air, and a second support for accommodating the second filter.

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

In some embodiments of the present invention, a first handle is provided on the first bracket to pull the first filter unit out of the frame, and a second handle is provided on the second bracket to pull the second filter unit out of the frame.

(Three) beneficial effects

As can be seen from the above technical solution, the air purification device of the present invention has at least one of the following beneficial effects:

(1) Since the filter unit is disposed opposite to the fan blade air outlet, the space 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;

(2) Since the air inlet and the air outlet of the frame are located on the parallel or intersecting surface of the frame, the air blown from the air outlet will not return to the air inlet, which can prevent the occurrence of turbulent flow;

(3) The pre-filter is set obliquely from the upper end of the air inlet provided on the side to the back of the frame and the fan blade air inlet, and covers the air inlet. All the air drawn from the air inlet of the frame must pass through the pre-filter. The filtering area of the pre-filter, even if the air inlet on the side of the frame is relatively narrow compared with ordinary air purifiers, it can uniformly and efficiently clean the air at the initial inlet. It is not necessary to increase the thickness of the frame in order to increase the area of the pre-filter. Thinning of air purification equipment;

(4) After the air is blown out from the fan blade outlet to the surroundings, it passes directly through the surrounding filter unit. Since the filter unit is provided on the side of the fan blade air outlet, rather than on the surface of the fan blade that is perpendicular to the shaft, the air purification device can save the original direction of the fan blade 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 contribute to thinning;

(5) The filter unit is a cylindrical quadrangle surrounding the fan blade air outlet. The inner periphery of the filter unit is a quadrangle. When the horizontal cross-sectional area is the same, the effective filtering area of the inner periphery of the quadrangle is larger than that of other polygons. Therefore, a quadrilateral can ensure the effective use of the filter unit. Also, corners of the quadrangle are provided with outwardly protruding bends. In this way, the side of the inner quadrilateral of the filter unit facing the fan outlet is connected to the side, and the part deformed due to bending is reduced to a minimum, which can prevent the corners of the filter unit from becoming dense due to compression, and the resistance to prevent air from increasing , Making the filtering unit unable to filter air evenly, and even reducing the effective filtering area on the inner periphery. Because the four corners of the filter unit are rounded, they can be integrally formed, which reduces the production cost of the filter unit and facilitates forming and installation.

(6) Since the seal closes the gap between the air supply unit, 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 the fan outlet and the first bracket or the second bracket The gap between the brackets flows out and blows directly 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 passing through the filtering unit;

(7) Since the filter unit is composed of two symmetrical first filter units and a second filter unit, the first filter unit is provided with a first outer side opening and a first handle facing the inspection cover side. 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, which is convenient for maintenance and replacement of the filter;

(8) When the air inlet is set on the front or back of the frame, and when the air outlet is set on the side, the pre-filter between the air inlet and the fan inlet is set parallel to the air inlet and covers the fan inlet. The fan blade air inlet is arranged facing the frame air inlet. After the air is drawn into the fan inlet from the air inlet on the front of the frame, it is blown out from the fan outlet on the side of the fan, then passes through the enclosed filter unit, and then blows out directly from the filter unit to the opposite air outlet, forming "L" The zigzag wind path minimizes the bending of the air path, makes the air path smoother when the air enters the fan blades and blows out from the filter unit, reduces the loss of air volume, and reduces noise;

(9) Because the pre-filter is arranged parallel to the fan blade suction port, based on the effective use of the filtering area of the pre-filter, the air purification device as a whole can save the height generated by the pre-filter inclination, and further reduce the thickness. At the same time, a smooth air path is ensured.

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

First Embodiment

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

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

The frame 100 is a hollow rectangular parallelepiped that forms the outline of the air purification device, and 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 the surfaces of the frame 100 that are parallel or intersect with each other, that is, the air inlet 101 and the air outlet 102 are not provided on the same surface of the frame 100. The combinations that can be set are:

(1) The air inlet 101 is provided on the front or back of the frame 100, and the air outlet 102 is provided on the side of the frame 100; or,

(2) The air inlet 101 is provided on the side of the frame 100, and the air outlet 102 is provided on the front or back of the frame 100; or,

(3) The air inlet 101 and the air outlet 102 are provided on the front and the back of the frame 100, respectively.

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

FIG. 3 is a schematic structural diagram of a filter unit and an air supply unit of an air purification device according to an embodiment of the invention. As shown in FIG. 3, the air supply unit 200 includes a fan blade 210, a motor 220, and a shaft 230. The fan blade 210 is a turbine fan blade. The fan blade 210 is driven by the motor 220 and rotates around the shaft 230 as a circle center. A surface of the fan blade perpendicular to the shaft 230 is provided with a fan blade suction port 211 for sucking air, and the fan blade suction port 211 is located on a side near the air inlet 101 of the frame. A fan blade air outlet 212 for air blowing out is provided on the side of the fan blade, and the fan blade air outlet 212 is parallel to the shaft 230. Air enters from the fan blade suction port 211 of the fan blade, and then blows out from the fan blade outlet 212 on the side. The fan blade suction port 211 is disposed opposite to the bottom surface of the frame 100.

The filtering unit 300 filters the sucked air into clean air and blows it out. The filtering unit 300 is disposed opposite to the fan blade air outlet 212, that is, provided on the side of the fan blade 210. The filtering unit 300 corresponds to one or a part of the fan blade air outlet 212. In this embodiment, the filtering unit 300 is arranged around the fan blade 210 and has a cylindrical quadrangular shape. The four corners of the cylindrical quadrangular shape protrude and bend outward, that is, rounded corners are provided.

In this embodiment, the filter unit is disposed opposite to the fan blade air outlet, which 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.

The filter unit 300 is set 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 filtering unit 300 includes two first filtering units 310 and a second filtering unit 320 divided in the axial direction of the fan blade. The first filtering unit 310 includes: a first filtering screen 311; and a first bracket 312 for receiving the first filtering screen 311. The second filtering unit 320 includes: a second filtering screen 321 and a second bracket 322 accommodating the second filtering screen 321. In this embodiment, the first filtering unit 310 and the second filtering unit 320 are evenly divided from the plane where the shaft 230 of the fan blade is located, that is, the first filtering unit 310 and the second filtering unit 320 are in a symmetrical state. The first filter unit 310 and the second filter unit 320 constitute a filter unit having a cylindrical quadrangular shape that surrounds the fan blade 210 once. The cylindrical quadrilateral means a shape in which the inner periphery of the filter unit has a space capable of accommodating the fan blade 210.

Both the first filter screen 311 and the second filter screen 321 are high-efficiency filters.

FIG. 4 is a detailed schematic diagram of a first bracket and a second bracket portion of the filtering device portion of FIG. 3. Referring to FIG. 4, the first bracket 312 includes: a wall surface 312c surrounding the first filter space; 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 312 a is provided on a 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 outlet 212, it enters the filter through the first inner side opening 312a, and then blows out from the first outer side opening 312b to the outside of the first filtering unit 310.

The second bracket 322 includes a wall surface 322c surrounding the second filter space, 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 surface opening 322 a is provided on a 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 air outlet 212, it enters the filter through the second inner side opening 322a, and then blows out of the second filter unit 320 through the second outer side opening 322b.

The wall surfaces of the first bracket 312 and the second bracket 322 are composed of two upper and lower flat plates P1 and P2. A side of the flat plate near the fan blade 210 is provided with a matching curved fan-shaped edge. The inner wall surface of the flat plate is provided with a rib T for engaging the first filter screen 311 and the second filter screen 321.

The first bracket 312 and the second bracket 322 are respectively provided with a first handle 312d and a second handle 322d that are pulled out of the frame 100 by the first filtering unit 310 and the second filtering unit 320.

A gap B is formed between the first bracket 312 and the second bracket 322 and the air supply unit 200, and a sealing portion for sealing the gap B is provided on the first bracket 312 and the second bracket 322. The sealing portion is a 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, the fan inlet 211, the fan outlet 212, the filter unit 300, and the air outlet 102 of the frame form an "S" -shaped air path through which air must pass in sequence.

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

The pre-filter is flat and extends obliquely from the end of the air inlet 101 near the fan blade toward the center of the fan blade, and is connected to the frame 100 and covers the air inlet 101. The so-called covering means that when viewed 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, which does not mean The pre-filter is in contact with the air inlet 101.

5 is a schematic diagram of a gap between a fan blade and an air outlet in an air purification device according to an embodiment of the present invention. FIG. 6 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 FIG. 5 and FIG. 6, a gap A is provided between the back surface of the fan blade 210, that is, the other side of the fan blade opposite to the side provided with the air inlet, 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, a gap A is provided between the air outlet 102 and the side of the air supply unit provided with the motor, and the filter unit 300 and the frame 100 are provided. 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 motor fixing plate 240 is a bracket provided on the back surface of the fan blade for fixing the motor 220. A side of the frame 100 is provided with an air outlet 102, and a gap A is provided between the frame 100 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 provided on a parallel or intersecting surface of the frame, the air blown from the air outlet 102 does not return to the air inlet 101, which can prevent the occurrence of turbulence.

Due to the attraction of the air supply unit 200, air enters the frame 100 from the air inlet 101 provided on the side of the frame 100, passes through the preliminary filtering of the pre-filter, and is sucked into the fan blades through the fan blade suction port 211.

The pre-filter is arranged obliquely from the upper end of the air inlet provided 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 from the frame air inlet 101 must pass through the pre-filter. The filtering area of the pre-filter, even if the air inlet 101 on the side of the frame 100 is relatively narrow compared with ordinary air purifiers, it can uniformly and efficiently enter the initial air purification. There is no need to increase the thickness of the frame 100 in order to increase the pre-filter area. , Is conducive to reducing the thickness of the air purification device.

After the air is blown out from the fan blade outlet 212 to the surroundings, the air directly passes through the filtering unit 300 surrounded by the surroundings. Since the filter unit 300 is disposed on the side of the fan blade outlet 212, rather than on the surface of the fan blade perpendicular to the shaft 230, the air purification device can save on the fan blade in the direction of the shaft 230 of the fan blade. The space originally required to accommodate the filter unit 300 in the axial direction can save the thickness of the filter unit and contribute to thinning.

In this embodiment, the filter unit 300 is a high-efficiency filter screen. By adopting this technical solution, the thickness of the high-efficiency filter screen can be saved as a whole. In the same way, no matter what type of filter network the filter unit is, as long as the technical solution is adopted, the thickness of the filter network can be saved as a whole 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 quadrangle. When the horizontal cross-sectional area is the same, the effective filtering area of the inner periphery of the quadrangle is larger than other polygons. Therefore, the quadrangle can ensure the effective use of the filter unit 300.

Also, corners of the quadrangle are provided with outwardly protruding bends. In this way, where the sides of the inner quadrilateral of the filtering unit 300 facing the fan blade outlet 212 meet, the deformation due to bending is reduced to a minimum, which can prevent the corners of the filtering unit 300 from becoming dense due to compression, and prevent air from passing through. The increased resistance makes the filtering unit 300 unable to filter air evenly, and even reduces the effective filtering area on the inner periphery.

In addition, because the four corners of the filter unit 300 are rounded, they can be integrally molded, which reduces the production cost of the filter unit and facilitates forming and installation.

Similarly, based on the principle that the filter unit is not bent and deformed, the filter unit may be a right-angled quadrangle or a polygon without rounded corners.

In this embodiment, it is preferred that the filter unit 300 is provided around the fan blade air outlet 212, but the filter unit 300 and the fan blade air outlet 212 may be disposed opposite to each other. Therefore, the filter unit 300 may be only part of the fan blade air outlet 212. Correspondingly, even if it is not completely enclosed, it is possible to obtain a thinning effect even with only one side.

In addition, the general air purification device, because the filter unit 300 is disposed perpendicular to the axis of the fan blade 210, that is, after the air blows out from the fan blade outlet 212 on the side of the fan blade, it first hits the wall of the wind path, and then turns upward. Passes the filtering unit 300. At this time, because the air blown out from the fan blade air outlet 212 flows at a high speed, the air with an excessively high wind speed hits the wall of the wind path, and turbulence and noise are generated, and a large loss of air volume is caused at the same time.

FIG. 7 is a schematic diagram of an air path of an air purification device according to an embodiment of the present invention. As shown in FIG. 7, in this embodiment, after the air is blown out from the fan outlet 212, it first passes through the filtering unit 300, and then is guided upward by the air duct wall to the outlet 102 provided on the front of the frame. The high-speed air blown from the fan blade outlet 212 is filtered by the filter unit 300, the wind speed is reduced, and it will not hit the wind wall at high wind speed. At the same time, it can smoothly turn to the air outlet 102 provided on the front of the frame, reducing the The loss and turbulence caused by the collision with the wind road wall reduce the noise and make the wind road smoother. Therefore, even if the filtering area of the filtering unit 300 surrounding the fan blade air outlet is smaller than that of a general flat-plate filtering unit 300, a large air volume can be ensured, and the filtering effect and air volume can be ensured on the basis of achieving thinness.

FIG. 8 is a schematic diagram of a filtering unit part in an air purification device according to an embodiment of the present invention. As shown in FIG. 8, there are gaps in the horizontal direction between the first bracket 311 and the second bracket 322 and the air supply unit 200, and the first bracket 311 and the second bracket 322 are provided with a sealing portion 331 that seals the gap. The two symmetrical first filtering units 310 and the second filtering unit 320 form a closed filtering unit 300 surrounding the fan blade air outlet 212. The first handle 312d and the second handle 322d are respectively disposed on the first filtering unit 310 and the second filtering unit 320 on the side of the inspection.

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, it closes the gap between the air supply unit 200 and the filter unit 300, preventing air from the fan blade outlet 212 and the first The gap between the bracket 311 or the second bracket 322 flows out and directly blows out the air outlet 102 on the frame 100 without passing through the filtering unit 300. As described above, airtightness is improved and air does not pass through the filter unit 300.

In addition, since the filtering unit 300 is composed of two symmetrical first filtering units 310 and a second filtering unit 320, the first filtering unit 310 is provided with a first outer side opening 312b and a first handle 312d facing the inspection cover side. 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, which is convenient for maintenance and replacement of the filter.

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

So far, the air purification device according to the first embodiment of the present invention has been introduced.

Second Embodiment

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

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

After the air is drawn into the fan inlet from the air inlet on the front of the frame, it is blown out from the fan outlet on the side of the fan, then passes through the enclosed filter unit, and then blows out directly from the filter unit to the opposite air outlet, forming "L" The zigzag air path minimizes the bending of the air path, makes the air path smoother when the air enters the fan blades and blows out from the filter unit, reduces the loss of air volume, and reduces noise.

In addition, since the pre-filter is arranged in parallel to the fan blade suction port, based on the effective use of the filtering area of the pre-filter, the air purification device as a whole can save the height generated by the pre-filter inclination, and further reduce the thickness. Ensure a smooth wind path.

So far, two embodiments of the present invention have been described in detail with reference to the drawings. It should be noted that, the implementation manners not shown or described in the drawings or the text of the description are all forms known to those skilled in the art and have not been described in detail. In addition, the above definitions of the elements and methods are not limited to the various specific structures, shapes, or manners mentioned in the embodiments, and those skilled in the art can simply modify or replace them.

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", "rear", "left", "right", etc., are only directions referring to the drawings, and are not It is used to limit the protection scope of the present invention. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Where it may cause confusion in the understanding of the present invention, conventional structures or constructions will be omitted.

In addition, the shapes and sizes of the components in the figure do not reflect the true size and proportion, but merely illustrate the content of the embodiments of the present invention. In addition, in the request item, any reference symbols between brackets should not be constructed as a restriction on the request item.

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

The serial numbers used in the description and the request items, such as "first", "second", "third", etc., to modify the corresponding component, does not mean that the component has any serial number, nor Represents the order of an element from another element, or the order of manufacturing methods. The use of these serial numbers is only used to clearly distinguish one element with a certain name from another element with the same name.

Similarly, it should be understood that, in order to streamline the invention and help understand one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment , Figure, or description of it. However, the method of the invention should not be construed to reflect the intention that the claimed invention requires more features than those explicitly recited in each claim. Rather, as reflected in the scope of the following patents, the inventive aspect lies in less than all features of a single embodiment of the previous invention. Therefore, the patent scope that follows a specific embodiment is hereby explicitly incorporated into that specific embodiment, where each claim is itself a separate embodiment of the invention.

The specific embodiments described above further describe the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

100‧‧‧ frame

312b‧‧‧First outside opening

101‧‧‧air inlet

312c‧‧‧wall

102‧‧‧outlet

312d‧‧‧ number one

200‧‧‧Air supply unit

320‧‧‧Second filter unit

210‧‧‧ Fan leaves

321‧‧‧Second filter

211‧‧‧fan blade suction port

322‧‧‧Second bracket

212‧‧‧fan leaf outlet

322a‧‧‧Second inner side opening

220‧‧‧ Motor

322b‧‧‧Second outer side opening

230‧‧‧axis

322c‧‧‧wall

240‧‧‧Motor fixing plate

322d‧‧‧Second Handle

300‧‧‧filtration unit

P1, P2‧‧‧ tablet

310‧‧‧The first filter unit

T‧‧‧ convex rib

311‧‧‧first filter

331‧‧‧Sealing Department

312‧‧‧First bracket

400‧‧‧ pre-filtration unit

312a‧‧‧First inner side opening

A‧‧‧Gap

FIG. 1 is a schematic structural diagram of a prior art air purification device. FIG. 2 is a schematic structural diagram of a frame portion of an air purification device according to an embodiment of the present invention. FIG. 3 is a schematic structural diagram of a filter unit and an air supply unit of an air purification device according to an embodiment of the invention. FIG. 4 is a schematic diagram showing a positional relationship between a filter unit and a fan unit of an air purification device according to an embodiment of the present invention. FIG. 5 is a detailed schematic diagram of a first bracket and a second bracket portion of the filtering device portion of FIG. 3. FIG. 6 is a schematic diagram of a sealing portion of a bracket and a ventilation unit in an air purification device according to an embodiment of the present invention. FIG. 7 is a schematic diagram of a gap A in an air purification device according to an embodiment of the present invention. FIG. 8 is a cross-sectional view of an air purification device according to an embodiment of the present invention. FIG. 9 is a schematic diagram of an air path of an air purification device according to an embodiment of the present invention. FIG. 10 is a schematic diagram of a filtering unit portion in an air purification device according to an embodiment of the present invention.

Claims (10)

An air purification device includes: a frame provided with an air inlet and an air outlet; a filter unit provided in the frame to purify air; and air that passes through the filter unit after being sucked in from the air inlet is blown out of the air An air supply unit for an air outlet, the air supply unit includes a motor, and a fan blade operated under the control of the motor, and a fan blade suction port is provided on one side in an axial direction of the fan blade, and the fan blade A fan blade air outlet is provided on the outer side in the radial direction, wherein the filter unit is disposed opposite to the fan blade air outlet. According to the air purification device of claim 1, the filter unit is disposed around the fan blade air outlet. According to the air purification device of claim 2, the filter unit is a cylindrical quadrangular shape, and four corners of the cylindrical quadrangular shape protrude and bend outward. According to the air purification device according to claim 1, the frame is box-shaped, and the air inlet and the air outlet are respectively provided on surfaces of the frame that are parallel or intersect with each other. According to the air purifying device according to claim 4, the air inlet is provided on the side of the frame, the fan blade air inlet is opposite to the bottom surface of the frame, and the air inlet and the fan air are sucked. A pre-filter is arranged between the ports, and the pre-filter is slantly extended from an end of the air inlet near the fan blade toward the center of the air inlet of the fan blade and covers the air inlet. According to the air purification device of claim 1, 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 a motor. A gap is provided between the sides, and a gap is provided between the filtering unit and a side of the frame on which the air outlet is provided. According to the air purifying device according to claim 4, 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 air inlet, and the pre-filter It is arranged parallel to the air inlet and covers the fan blade air inlet. The air purification device according to claim 2 or 3, wherein the filtering unit includes a first filtering unit and a second filtering unit which are divided on a plane where the axial direction of the fan blade is located, and the first filtering unit The unit includes a first filter screen for purifying air and a first bracket for accommodating the first filter screen, and the second filter unit includes a second filter screen for purifying air and a second bracket for accommodating the second filter screen. According to the air purifying device according to claim 8, a first inner side opening is provided on a surface of the first bracket opposite to the fan outlet, and the first bracket is provided with the first inner surface. A first outer side opening is provided on a surface opposite to the side opening, and a second inner side opening is provided on a surface of the second bracket opposite to the fan outlet, and the second bracket is connected to the second bracket. A second outer side opening is provided on the opposite side of the inner side opening, a gap is provided between the first bracket and the second bracket and the air supply unit, and the first bracket and the second bracket are provided with A sealing portion that seals the gap. According to the air purifying device according to claim 9, 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 the second handle The second handle pulled out by the filter unit outside the frame.