CN107243201B

CN107243201B - Air purification module and air purifier

Info

Publication number: CN107243201B
Application number: CN201710572089.2A
Authority: CN
Inventors: 蔡志文
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-07-13
Filing date: 2017-07-13
Publication date: 2023-07-11
Anticipated expiration: 2037-07-13
Also published as: CN107243201A

Abstract

An air cleaning module and an air cleaner are provided. The air purification module comprises a shell, wherein a baffle is arranged in the shell, the baffle divides the shell into a first cavity and a second cavity, a plurality of through holes are formed in the baffle so that the first cavity and the second cavity can be circulated with air, the second cavity is configured to contain air filtering materials, and the first cavity is configured to receive air to be filtered or air filtered by the air filtering materials flows out. The air purification module and the air purifier can better obtain clean air.

Description

Air purification module and air purifier

Technical Field

At least one embodiment of the present disclosure relates to an air purification module and an air purifier.

Background

In practical applications in daily life, although the air purifier is of various types, the practical effect of the function is very limited.

The fan blades adopted by the common industrial fans, exhaust fans, household fans and the like have large design noise and strong vibration force, and are easy to bring discomfort to people.

Disclosure of Invention

At least one embodiment of the present disclosure relates to an air cleaning module and an air cleaner to better obtain clean air, and a fan that may be used in the air cleaner.

At least one embodiment of the present disclosure provides an air purification module, including a housing, a baffle is disposed in the housing, the baffle divides the housing into a first chamber and a second chamber, a plurality of through holes are disposed on the baffle to enable the first chamber and the second chamber to perform air circulation, the second chamber is configured to accommodate an air filtering material, and the first chamber is configured to receive air to be filtered or flow out air filtered by the air filtering material.

According to the air purification module provided by the embodiment of the disclosure, the air purification module comprises an air inlet side and an air outlet side which are opposite to each other, the arrangement direction of the first chamber and the second chamber is intersected with the direction from the air inlet side to the air outlet side, one of the first chamber and the second chamber is an air inlet chamber, and the other is an air outlet chamber.

According to the air purification module provided by the embodiment of the disclosure, the arrangement direction of the first chamber and the second chamber is perpendicular to the direction from the air inlet side to the air outlet side.

According to the air purification module provided by the embodiment of the disclosure, the air filtering material is contained in the second cavity, the air to be filtered enters the first cavity, flows through the air filtering material and flows out of the second cavity; alternatively, air to be filtered enters the second chamber, flows through the air filter material, and exits the first chamber.

According to the air purification module provided by the embodiment of the disclosure, the air inlet chamber comprises the first air guiding part which is obliquely arranged, and the first air guiding part is gradually close to the baffle plate in the direction from the air inlet side to the air outlet side.

According to the air purification module provided by the embodiment of the disclosure, the first gas guiding part is an arc-shaped plate or a flat plate.

According to the air purification module provided by the embodiment of the disclosure, the first air guiding part is not intersected with the baffle plate.

According to the air purification module provided by the embodiment of the disclosure, the air outlet chamber comprises the second air guiding part which is obliquely arranged, and the second air guiding part is gradually far away from the baffle plate in the direction from the air inlet side to the air outlet side.

According to the air purification module provided by the embodiment of the disclosure, the second air guiding part is an arc-shaped plate or a flat plate.

According to the air purification module provided by the embodiment of the disclosure, the included angle between the second air guiding part and the baffle plate is 45-85 degrees.

According to an embodiment of the present disclosure, the air purification module further includes a particulate matter interception portion disposed on the air intake side and configured to intercept particulate matters in the air entering the air intake chamber.

According to the air purification module provided by the embodiment of the disclosure, in the direction from the air inlet side to the air outlet side, the particulate matter interception part comprises a plurality of first silk screens with sequentially reduced mesh apertures, and a second silk screen arranged between two adjacent first silk screens, wherein the mesh aperture of the second silk screen is larger than that of the first silk screen.

According to the air purification module provided by the embodiment of the disclosure, the mesh number of the first silk screen ranges from 80 meshes to 300 meshes, and the mesh number of the second silk screen ranges from 30 meshes to 70 meshes.

An air purification module provided according to an embodiment of the present disclosure further includes a particulate matter electrostatic capturing portion, wherein the particulate matter electrostatic capturing portion is disposed at the air outlet side of the air purification module and configured to capture particulate matter in the gas flowing out from the second chamber.

According to the air purification module provided by the embodiment of the disclosure, the air filtering material comprises granular or columnar activated carbon.

According to the air purification module provided by the embodiment of the disclosure, the first cavity comprises a plurality of first subchambers, the second cavity comprises a plurality of second subchambers, and the partition plates are arranged between the adjacent first subchambers and between the adjacent second subchambers.

At least one embodiment of the present disclosure also provides an air purifier including the air purification module provided by at least one embodiment of the present disclosure.

The present disclosure further provides a fan, including at least two fan blades disposed on a support shaft, each fan blade is wound on the support shaft, each fan blade includes a start end and a tail end, the start end and the tail end of each fan blade are spaced apart in an axial direction of the support shaft, and adjacent two fan blades include overlapping portions along an axial direction of the support shaft, and an air circulation channel is formed at an overlapping portion of the adjacent two fan blades.

According to the fan provided by the embodiment of the disclosure, each fan blade winds around the supporting shaft at least one circle.

According to one embodiment of the present disclosure, a fan is provided wherein each air flow channel is about at least one quarter of the circumference of the support shaft.

According to an embodiment of the present disclosure, the air circulation channel surrounds at least a half of the supporting shaft.

According to a fan provided in an embodiment of the present disclosure, the air circulation passage surrounds at least one circumference of the support shaft.

According to the fan provided by the embodiment of the disclosure, the number of the fan blades is the same as the number of the air circulation channels.

According to the fan provided by the embodiment of the disclosure, each fan blade comprises a first fan surface part, a second fan surface part and a third fan surface part; the first fan surface part extends from the initial end, the outer edge of the first fan surface part is gradually far away from the axial lead of the supporting shaft, the outer edge of the second fan surface part is equal to the axial lead in distance, the third fan surface part is gradually folded towards the tail end, and the outer edge of the third fan surface part is gradually close to the axial lead of the supporting shaft; the first fan surface part is connected with the second fan surface part, and the second fan surface part is connected with the third fan surface part.

According to the fan provided by the embodiment of the disclosure, the projection of the first fan surface part in the plane perpendicular to the axial direction and the projection of the third fan surface part in the plane perpendicular to the axial direction are semicircular.

According to the fan provided by the embodiment of the disclosure, the projection of the second fan surface part in the plane perpendicular to the axial direction is semicircular, and the diameter of the projection of the second fan surface part in the plane perpendicular to the axial direction is smaller than the sum of the diameter of the projection of the first fan surface part in the plane perpendicular to the axial direction and the diameter of the projection of the third fan surface part in the plane perpendicular to the axial direction.

According to the fan provided by the embodiment of the disclosure, the diameter of the first fan surface is equal to the diameter of the third fan surface.

According to the fan provided by the embodiment of the disclosure, a contact line is formed at the contact position of each fan blade and the supporting shaft, and each point on the contact line is located on different circumferences of the supporting shaft.

According to an embodiment of the present disclosure, the projection of the contact line on the axial plane including the start end or the end forms an angle with the axial line of the support shaft in a range of 45 ° to 80 °.

According to the fan provided by an embodiment of the present disclosure, the start ends of the blades are located on the same circumference of the supporting shaft.

According to an embodiment of the present disclosure, the tail end of each fan blade is located on the same circumference of the support shaft.

According to the fan provided by the embodiment of the disclosure, the supporting shaft comprises a hole, and the hole of the supporting shaft is connected with the screw.

According to the fan provided by the embodiment of the disclosure, each fan blade is symmetrically arranged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure, not to limit the present disclosure.

FIG. 1A is a schematic diagram of an air purification module and an air flow path according to an embodiment of the disclosure;

FIG. 1B is a schematic diagram of an air path of an air filter material in an air purification module according to an embodiment of the disclosure after a small sedimentation;

FIG. 2A is a schematic diagram illustrating an air flow path of an air purification module according to another embodiment of the present disclosure;

FIG. 2B is a schematic diagram of an air path of an air filter material in an air purification module according to another embodiment of the present disclosure after a small sedimentation;

fig. 3 is a schematic perspective view of an air purification module according to an embodiment of the disclosure;

FIG. 4 is a schematic perspective view of an air purification module (without a baffle) according to an embodiment of the disclosure;

FIG. 5 is a schematic perspective view of a baffle plate in an air purification module according to an embodiment of the disclosure;

fig. 6 is a schematic perspective view of a cover plate in an air purification module according to an embodiment of the disclosure;

FIG. 7 is a schematic perspective view illustrating another view of a cover plate in an air purification module according to an embodiment of the disclosure;

fig. 8 is a schematic perspective view of an air purification module according to an embodiment of the disclosure;

FIG. 9 is a schematic diagram of an air purification module according to another embodiment of the disclosure;

FIG. 10 is a schematic diagram of an air purification module according to another embodiment of the present disclosure;

FIG. 11 is a schematic diagram of an assembly module according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of an air purification module according to another embodiment of the present disclosure (including a joint portion);

FIG. 13 is a schematic view of an assembly module according to another embodiment of the present disclosure;

fig. 14 is a schematic view of an air purification module (including a particulate matter interception portion and a particulate matter electrostatic capturing portion) according to another embodiment of the disclosure;

FIG. 15 is a schematic diagram of an air purification module including a particulate matter blocking portion according to an embodiment of the disclosure;

fig. 16 is a schematic view of a wire mesh arrangement in a particulate matter interception portion in an air purification module according to an embodiment of the present disclosure;

FIG. 17 is a schematic view of a particulate matter interceptor in an air cleaning module according to an embodiment of the present disclosure mounted in an outer frame;

FIG. 18 is a schematic diagram of an air purification module according to another embodiment of the disclosure;

FIG. 19 is a schematic view of an air purifier according to an embodiment of the present disclosure;

FIG. 20 is a top view of a fan provided in an embodiment of the present disclosure;

FIG. 21 is a perspective view of a fan provided in an embodiment of the present disclosure;

FIG. 22 is a perspective view of another view of a fan provided in an embodiment of the present disclosure;

FIG. 23 is a schematic view of an angled contact line and an axial face including a start end according to an embodiment of the present disclosure;

FIG. 24 is a schematic top view of a fan blade of a fan according to an embodiment of the disclosure;

FIG. 25 is a schematic bottom view of a blade of a fan according to an embodiment of the disclosure;

FIG. 26 is a perspective view of a fan according to an embodiment of the disclosure;

fig. 27 is a perspective view of a fan according to an embodiment of the disclosure.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

A typical air cleaner includes the following two types. The first is an electrostatic dust collection type purifier. The electrostatic dust collection type purifier has the advantages of no need of replacing a filter element, low use cost, unstable effect, incapability of removing toxic components and odor in the air, and easiness in damaging the health of a user. The dust collecting plate is not cleaned for a long time and also causes fire. The electrostatic dust collection type purifier is characterized in that dust is easy to accumulate on the surface of the dust collection plate, the dust collection plate is easy to be blocked over time, accumulated particles are not easy to clean, the dust collection plate is usually just bounced off or treated by a dust collector, the dust collection type purifier is too passive, the dust collection type purifier is not clean, and the secondary pollution to the environment is easy to cause due to long-time accumulation of pollutants. The second is a screen type purifier. The filter screen type purifier has the advantages of stable effect, capability of basically removing formaldehyde and odor when in use, and no secondary pollution. However, the filter screen is required to be replaced regularly, the use cost is high, and the activated carbon pores made by using the process modeling (for example, bonding the activated carbon together by using a binder and then performing compression molding) are insufficient, so that the adsorption is easy to saturate, and the odor is released, so that the aim of purifying the air is not achieved, and the body is not good.

After the particulate matter is intercepted by the front end, the toxic air treatment part is arranged next, and the active carbon is generally used for adsorbing toxic and odor components in the air. However, in general, the method of using activated carbon is incorrect or even wrong, and some of the methods are to process the activated carbon to be suitable for product design, for example, an adhesive is added to the activated carbon, and then the activated carbon is pressed into a honeycomb shape and the like, so that the original function of the material is affected, and the adsorption effect on toxic and harmful gases is reduced or lost.

In the practical manufacturing and application of the air purifier in daily life, the electrostatic dust collection type purifier saves cost without replacing the filter element, but can not remove toxic and harmful gas components, and the dust collection plate can not be cleaned for a long time to cause fire. And the filter screen type purifier can remove formaldehyde and odor without secondary pollution, but the filter screen needs to be replaced periodically, the use cost is high, and the odor is released instead of replacing the filter screen for a long time.

Taking a general purifier as an example, the purifier needs to be placed in a living room during use, and has the following disadvantages. First, occupy the indoor space, cause the puzzlement to the indoor activity. Secondly, the actual working principle of the indoor air filter can only carry out circulating treatment and filtration on the indoor air, and the indoor air filter can not carry out circulating exchange with the outside fresh air, so that the indoor air filter can generate mildew and smell after being used for a long time, and oxygen deficiency is easy to cause. Because of the defects of the common purifier, certain discomfort and danger are brought to the old and the weak. The practical performance of the common purifier is limited, and the practical value of the air for real purification is lost.

At least one embodiment of the present disclosure provides an air purification module 10, as shown in fig. 1A, including a housing 11, a baffle 12 is disposed in the housing 11, the baffle 12 divides the housing 11 into a first chamber 101 and a second chamber 102, a plurality of through holes 121 are disposed on the baffle 12 to enable the first chamber 101 and the second chamber 102 to circulate air, the second chamber 102 is configured to accommodate an air filtering material 1021, and the first chamber 101 is configured to receive air to be filtered or flow out air filtered by the air filtering material. An air filter material 1021 may be contained within the second chamber 102, thereby forming a gas barrier filter.

For example, as shown by the dashed arrows in fig. 1A, gas enters the first chamber 101, flows through the plurality of through holes 121 in the baffle 12 and the air filter material 1021, and exits the second chamber 102. The air entering the first chamber 101 flows only to the second chamber 102. For example, the air filter material 1021 includes granular or columnar activated carbon (activated carbon raw material for air purification). For example, the granular activated carbon may be made of husk or coconut husk, and the granular activated carbon may have a particle size ranging from 0.5 to 4mm, but is not limited thereto, and for example, the granular activated carbon may have a particle size of 0.5mm, 1mm, 1.5mm, 2mm, 4mm, etc., but is not limited thereto. The columnar activated carbon can be prepared by taking coal as a raw material. The column height of the columnar activated carbon is generally not more than the diameters of the three granular activated carbons, for example, the column height of the columnar activated carbon is generally not more than 12mm, further for example, the column height of the columnar activated carbon is generally not more than 6mm.

For example, the plurality of through holes 121 provided on the baffle plate 12 may have a diameter smaller than the particle diameter of the air filter material 1021 to prevent the air filter material 1021 from falling out of the second chamber 102. Of course, other ways may be used to prevent the air filter material 1021 from falling out of the second chamber 102, for example, a screen for preventing the air filter material from falling may be provided on the baffle 12, for example, the screen for preventing the air filter material from falling may have a smaller aperture than the air filter material. Further for example, the mesh size of the air filter material fall-off preventing screen may be 80-100 mesh. For example, the screen preventing the air filter material from falling off may be a nylon screen, but is not limited thereto.

In the embodiment of the present disclosure, the air filter material 1021 is granular or columnar activated carbon, and other materials may be used for the air filter material 1021, which is not limited in the embodiment of the present disclosure. Hereinafter, the air filter material 1021 is exemplified by granular activated carbon.

In a typical air purifier, the activated carbon is pressed into a honeycomb shape or other shape by adding an adhesive before use, so that the pores of the activated carbon are closed by the adhesive to lose the function of the material. In the embodiment of the disclosure, the activated carbon does not need to be subjected to process modeling, and any other materials are not added, so that the pores of the activated carbon fully play a role in adsorption, the situation that the pores of the activated carbon are closed by the binder is avoided, and the optimal adsorption effect can be achieved.

The air purification module 10 provided in at least one embodiment of the present disclosure is provided with two chambers, which is capable of facilitating the adjustment of the air path, so that the air path through which the air passes must contain the air filtering material 1021, thereby enabling the air to be filtered, obtaining a better air filtering effect, and better obtaining clean air.

According to the air cleaning module 10 provided in an embodiment of the present disclosure, as shown in fig. 1A, the air cleaning module 10 includes an air inlet side 10A and an air outlet side 10B opposite to each other, and an arrangement direction of the first chamber 101 and the second chamber 102 intersects with a direction from the air inlet side 10A to the air outlet side 10B. Thus, a tunnel-convection type air filtering path can be formed. For example, the air flow path may be a serpentine or curvilinear path to facilitate filtration of air entering the second chamber by the air filtration material 1021. For example, one of the first chamber 101 and the second chamber 102 is an air inlet chamber, the other is an air outlet chamber, as shown in fig. 1A, the first chamber 101 is an air inlet chamber, the second chamber 102 is an air outlet chamber, the air inlet chamber includes an air inlet 1010, the air inlet 1010 is disposed on the air inlet side 10A of the air purification module 10, the air outlet chamber includes an air outlet 1020, and the air outlet 1020 is disposed on the air outlet side 10B of the air purification module 10.

According to the air purification module 10 provided in an embodiment of the present disclosure, as shown in fig. 1A, an air purification module (anti-poison filter element) with an air up-down convection structure is manufactured according to the performance of the activated carbon material, the filling environment of the activated carbon is in a vertical state, the air flow can be designed to be up-down convection dynamic, and the air flow can be enabled to flow into a saturated activated carbon filling area, so that the purposes of fully utilizing the air filtering material 1021 and completely filtering are achieved. Because the performance of the activated carbon can play the maximum role of air filtration under the condition of no impurity, under the natural filling condition, the filtered gas can completely pass through the second chamber (filling area) from bottom to top, the activated carbon can fully and comprehensively contact with the air flow, and toxic gas in the air flow can be comprehensively adsorbed by the air filtering material 1021.

The activated carbon body itself is granular or columnar, and after the activated carbon in the filling area is placed and used for a certain period of time, the activated carbon may become dense and have small sedimentation, at this time, a small amount of gaps will appear at the top of the second chamber 102, and if air flows across the gaps, the opportunity of contacting the activated carbon is lost, which is equal to white flow without filtration.

In the air purification module provided by the embodiment of the present disclosure, after a period of use, even though the air filtering material 1021 is settled (as shown in fig. 1B), the air entering the second chamber is filtered by the air filtering material 1021 because the arrangement direction of the first chamber 101 and the second chamber 102 intersects with the direction from the air inlet side 10A to the air outlet side 10B, so as to avoid the situation that the air does not pass through the air filtering material 1021 and cannot perform the air filtering function. Thereby, the air filtering effect of the air filtering material 1021 can be improved to the maximum extent, and the air filtering material is used as much as possible.

That is, the air cleaning module provided by the embodiments of the present disclosure can completely pass through the saturation region filled with activated carbon even though the activated carbon has small sedimentation to generate a top gap, because the air flows from bottom to top (from the first chamber 101 to the second chamber 102). The air purification module 10 combines the material properties of the activated carbon and has the performance of adsorbing toxic components in the air most effectively. In order not to influence the functionality of the material, the optimal filling environment can be provided, and the activated carbon after a certain time of use can be taken out for solarization, so that the adsorbed toxic properties are fully diffused, and then the activated carbon is backfilled for reuse.

Fig. 1A shows the direction (D1 direction) from the inlet side 10A to the outlet side 10B, and the arrangement direction (D2 direction) of the first chamber 101 and the second chamber 102. For example, as shown in fig. 1A, the arrangement direction of the first chamber 101 and the second chamber 102 is perpendicular to the direction from the inlet side 10A to the outlet side 10B.

It should be noted that, on the basis of fig. 1A, the airflow direction may be changed, for example, the airflow direction may also be as shown in fig. 2A, that is, the second chamber 102 is used as an air inlet chamber, the first chamber 101 is used as an air outlet chamber, or the air to be filtered enters the second chamber 102, flows through the air filtering material 1021 and the through holes 121 on the baffle plate 102, and flows out from the first chamber 101. Fig. 2B shows a schematic view of the air filter material in the second chamber 1021 after a small sedimentation. Therefore, under the natural filling condition, the filtered gas can completely pass through the second chamber (filling area) from top to bottom, the activated carbon can fully and comprehensively contact with the air flow, and toxic gas in the air flow can be comprehensively adsorbed by the air filtering material 1021. Even if the air filter 1021 is settled, the air flows from top to bottom (from the second chamber 102 to the first chamber 101) in the air purification module 10, and thus the air can pass through the area filled with the air filter 1021.

The following description will take the first chamber 101 as an air inlet chamber and the second chamber 102 as an air outlet chamber as an example.

According to the air purification module 10 provided in an embodiment of the present disclosure, as shown in fig. 1A and 3, fig. 3 shows a perspective view of the air purification module 10, the air inlet chamber includes a first air guiding portion 13 disposed obliquely, and the first air guiding portion 13 gradually approaches the baffle 12 in a direction (D1 direction) from the air inlet side 10A to the air outlet side 10B. The first gas guiding portion 13 is disposed obliquely, which is more beneficial to the dispersion of the gas (air flow) entering the first chamber 101. For example, the first gas guiding portion 13 may be an arc plate, but is not limited thereto. Of course, other shapes of the first gas guiding portion 13 may be provided, which is not limited in the embodiments of the present disclosure.

According to the air purification module 10 provided in an embodiment of the present disclosure, as shown in fig. 1A and 3, in order to make more air enter the first chamber 101, the volume of the first chamber 101 is increased, and the first air guiding portion 13 does not intersect with the baffle 12. For example, the volume of the first chamber may be adjusted by adjusting the distance between the baffle plate and the side of the first gas guiding portion 13 adjacent to the baffle plate 12. For example, the volume of the inlet chamber may be made larger than the volume of the outlet chamber to facilitate the inlet chamber to contain more air.

According to the air purification module 10 provided in an embodiment of the present disclosure, as shown in fig. 1A and 3, the second chamber 102 includes the second air guiding portion 14 disposed obliquely, and the second air guiding portion 14 is gradually far away from the baffle 12 in a direction (D1 direction) from the air inlet side 10A to the air outlet side 10B. For example, as shown in fig. 1A and 3, the second gas guiding part 14 may be an arc-shaped plate, but is not limited thereto.

For example, referring to fig. 2A and 2B, as shown in fig. 2A and 2B, the second chamber 102 is an air inlet chamber, may include the first gas guiding portion 13, the first chamber 101 is an air outlet chamber, and may include the second gas guiding portion 14.

According to the air cleaning module 10 provided in an embodiment of the present disclosure, as shown in fig. 3, the first chamber 101 includes a plurality of first subchambers 1011, the second chamber 102 includes a plurality of second subchambers 1021, and a partition 15 is disposed between adjacent first subchambers 1011 and between adjacent second subchambers 1021. Two first sub-chambers 1011 are shown in fig. 3, but the number of first sub-chambers 1011 is not limited thereto. Two second subcavities 1021 are shown in FIG. 3, but the number of first subcavities 1011 is not limited thereto.

Figures 4 and 5 show that the baffle 12 and housing 11 are removable, thereby facilitating the loading of the air filter material 1021.

In the embodiment of the present disclosure, the second chamber 102 is filled with the air filtering material 1021. The first chamber 101 and the second chamber 102 may be filled with the second chamber 102 to better purify the air entering the air purification module 10.

Fig. 6 shows a cover plate 16, and a plurality of through holes 161 are provided on the cover plate 16, and fig. 6 shows two groups of through holes, each group including six through holes 161, but not limited thereto. The first set of through holes 161 (six through holes on the upper side of fig. 6) may correspond to the air outlets 1010 of the second chamber 102. The housing 11 may be provided with grooves 112 (see fig. 3), and the cover 16 may be detachably connected to the housing by engaging protrusions 163 on four corners of the cover 16 with the grooves 112 on the housing 11.

For example, the second set of through holes in the cover plate 16 that correspond to the second chamber 102 are spaced from the baffle 12 closest to the baffle 12 in the direction D2 so that the gas may more contact the air filter material 102 as it flows into or out of the second chamber 102. As shown in fig. 6, the dashed line L1 corresponds to the position of the baffle 12 of the air purification module 10, and the through hole closest to the baffle 12 in the first set of through holes corresponding to the second chamber 102 on the cover plate 16 is spaced from the baffle 12 by H1 in the direction D2. Fig. 7 shows a view from another perspective of the cover plate 16, where the cover plate 16 may further include a decorative hole 162, where the decorative hole 162 is a non-through hole, so that the air outlet side 10B of the first chamber 101 may be closed, such that air entering the first chamber 101 may only flow into the second chamber 102, or air entering the second chamber 102 may only flow into the first chamber 101.

An air purification module 10 according to an embodiment of the present disclosure, as shown in fig. 8, provides a schematic perspective view of an air outlet side of the air purification module 10.

According to the air purification module 10 provided in an embodiment of the present disclosure, as shown in fig. 9, the first air guiding portion 13 may also be a flat plate. For example, as shown in fig. 9, the second gas guiding portion 14 may also be a flat plate. For example, to increase the volume of the second chamber 102, the second gas baffle 14 may be angled in the range of 45 ° -85 ° with respect to the baffle 12, and further for example, the second gas baffle 14 may be angled in the range of 60 ° -80 ° with respect to the baffle 12. When the second gas guiding portion 14 is an arc-shaped plate (as shown in fig. 1A and 3), the above-mentioned angle range may be the angle range between the baffle plate 12 and the tangent line of the second gas guiding portion 14 at the intersection point with the baffle plate 12.

According to the air cleaning module 10 provided in an embodiment of the present disclosure, as shown in fig. 10 and 11, for easy assembly and disassembly, the housing 11 may be provided with an assembling portion 111, and the assembling portion 111 is configured to be assembled with the assembling module 50. Four assembly modules 50 are shown in fig. 11, one air cleaning module 10 is placed in the four assembly modules 50, and the assembly of other air cleaning modules 10 can be continued at the periphery, such that a plurality of air cleaning modules 10 can be assembled together in one plane (e.g., in the paper), for example, in fig. 11, one side of the paper is the air inlet side of the air cleaning module 10, and the other side of the paper is the air outlet side of the air cleaning module 10.

The air cleaning module 10 according to an embodiment of the present disclosure, as shown in fig. 12 and 13, further includes a coupling portion 40, and the coupling portion 40 is detachably connected to the housing 11. Thus, the rapid disassembly and assembly of the air cleaning module 10 can be facilitated. Fig. 13 shows another assembly module 50, in which the joint 40 and the housing 11 can be assembled to the assembly module 50 through the mounting holes 501.

The air purification module 10 provided according to an embodiment of the present disclosure, as shown in fig. 14, further includes a particulate matter interception portion 20, where the particulate matter interception portion 20 is disposed at the intake side 10A and configured to intercept particulate matters in air entering the intake chamber. In this embodiment, the front end particulate matter interception part may be a multi-layer multi-density integrated interception device, and may be disassembled, sterilized or cleaned and recycled.

The air purification module 10 provided according to an embodiment of the present disclosure, as shown in fig. 14, further includes a particulate matter electrostatic capturing part 30, and the particulate matter electrostatic capturing part 30 is disposed at the air outlet side 10B of the air purification module 10 and configured to capture particulate matter in the air flowing out from the air outlet chamber. For example, electret polypropylene melt blown nonwoven fabrics can be used to electrostatically capture the stubborn fine particulate matter that remains after filtration. For example, the particle size of the fine particulate matter may be around 0.3 μm, but is not limited thereto. The stubborn and fine particles stored in the air filtered by the air filtering material 1021 are captured by the particle electrostatic capturing part 30, so that the quality of the air entering the room is nontoxic and clean.

According to the air cleaning module 10 provided in an embodiment of the present disclosure, as shown in fig. 15, in a direction from the air inlet side 10A to the air outlet side 10B, the particulate matter blocking part 20 includes a plurality of first screens 201 having sequentially reduced mesh apertures, and a second screen 202 disposed between two adjacent first screens 201, the mesh apertures of the second screen 202 being larger than those of the first screens 201. Therefore, the particle materials with various sizes can be split, and the particle materials can be collected in larger quantity only when the particle materials are collected in an orderly manner. But also can be cleaned and reused, thus saving the purification cost. Due to the arrangement of the second wire mesh 202 with a slightly larger aperture between two adjacent first wire meshes 201, the particle intercepting part 20 is less prone to being blocked, cleaning of the particle intercepting part 20 is facilitated, and particles remained on the particle intercepting part 20 can be cleaned more easily when the particle intercepting part 20 is disassembled and cleaned. As the particulate matter interception net orderly stacks the particulate matters according to the thickness, the particulate matters are orderly and fully collected from large and small in sequence, so that the particulate matter interception net is convenient to detach and clean and can be recycled.

According to the air cleaning module 10 provided in an embodiment of the present disclosure, the mesh number of the first wire mesh 201 ranges from 80 mesh to 300 mesh, and the mesh number of the second wire mesh 202 ranges from 30 mesh to 70 mesh. For example, the particulate matter intercepting part 20 may be manufactured by a heat sealing process after being overlapped with nylon wires with different mesh numbers. For example, the particulate matter intercepting part 20 may be manufactured by stacking five layers of nylon wires with different mesh numbers and then performing a heat sealing process. For example, the first screen 2011 has a density specification of 100 mesh, and primarily intercepts relatively coarse particulate matter. The third layer 2012 has a density of 160 mesh to intercept normal particulate matter and the fifth layer 2013 has a density of 250 mesh to intercept relatively fine particulate matter. The density specification of the second layer of silk screen 2021 and the fourth layer of silk screen 2022 can be 40 meshes which are thicker, and mainly separate the first layer of silk screen 201, the third layer of silk screen and the fifth layer of silk screen respectively, so that the effects that all layers of the first silk screen 201 are not adhered, the air permeability is improved, the dust collection amount is large, the cleaning is easy, and the particulate matter interception part 20 can be detached and cleaned for reuse.

It should be noted that, while the five-layer wire mesh is described above as an example, the embodiments of the present disclosure are not limited to this, and the second wire mesh 202 is described above as the same specification as the first wire mesh 202, but the mesh size of the second wire mesh 202 may be reduced from the air inlet side 10A to the air outlet side 10B (direction D1), but still larger than the mesh size of the first wire mesh 201. The screen materials of the first screen and the second screen are not limited to nylon screens.

Fig. 16 shows a schematic arrangement of the screen, and fig. 17 shows that the particulate matter blocking part 20 may be provided in the outer frame 21.

An air cleaning module 10 according to an embodiment of the present disclosure, as shown in fig. 18, illustrates an exploded schematic view of a particulate matter electrostatic capturing section 30, the air cleaning module 10, a particulate matter intercepting section 20, and a combining section 40. The air enters the air inlet chamber from the particulate matter intercepting part 20, is filtered by the air filtering material 1021, passes through the particulate matter electrostatic capturing part 30 after passing through the air outlet chamber, and thus clean air is output. For example, the housing 11, the baffle 12, the coupling portion 40, the assembly portion 50, and the like may be made of engineering plastics, but are not limited thereto.

At least one embodiment of the present disclosure also provides an air purifier, as shown in fig. 19, comprising the air purification module 10 provided by at least one embodiment of the present disclosure. The beneficial effects of the air purifier can be seen from any of the beneficial effects of the air purifying modules described above, and will not be described herein.

An air purifier provided according to an embodiment of the present disclosure, as shown in fig. 19, further includes an outer protective case 60 and an induced draft fan 70, the outer protective case 60 being configured to protect the air purification module 10, the induced draft fan 70 being configured to introduce gas into the air intake chamber. The induced draft fan 70 may be disposed on the air inlet side 10A or the air outlet side 10B, and may perform a rear boosting and front suction function on the air flow.

In order to save energy and reduce consumption, and control the air volume of the air intake, avoid the influence of the opening of warm air in winter and cool air in summer, and achieve comfortable mute energy saving effect, a 6v electronic ball blower can be used as the induced draft fan 70 to introduce air into the air purifying module 10/air purifier, for example, to suck outdoor air into the air purifying module 10/air purifier.

An air purifier provided according to an embodiment of the present disclosure may further include a fan configured to discharge indoor air to the outside, and a multi-stage speed-adjustable mute fan may be employed. After the air flow is purified by the air purifier, the air flow enters the room for circulation, and then can be discharged out of the room by a fan, the fan can be arranged at the position opposite to the air purifier, and the fan (for example, a ventilator of a bathroom) existing in the room can also be used as the fan of the air purifier.

A typical fan may include, in accordance with a fan blade design: bladeless fans and bladed fans, bladed fans typically include 2-bladed fans, 3-bladed fans, 5-bladed fans, and more. Although the bladeless fan is novel in modeling, the practical function is not great. The fan with blades is mainly beneficial to fan blade blowing, for example, the fan blades can be arranged on the supporting shaft, the fan blades can blow air axially along the supporting shaft, and then the air is blown out by the air guide ring.

The fan blade design adopted by the common fans (including industrial fans, exhaust fans, household fans and the like) mainly comprises 2-leaf symmetrical ox horn fans (generally called ox horn fans), and the number of the 3-leaf ox horn fans, the 5-leaf ox horn fans and the like is different, so that the 2-leaf ox horn fans are only suitable for industrial production. The fan blade designs of 3 blades, 5 blades and 7 blades are also applied to household fans, the fan blade shapes of the fan are mainly short-piece type or small-piece type, and the fan is used for blowing air by using the fan blades, so that the fan has the advantages of rapid air blowing, high noise and strong vibration force, and is easy to bring discomfort to people. The ox horn fan has the use effect similar to that of a 3-leaf sharp blade type fan, and the two fans are small in blade size, but the two fans need 1350 revolutions per minute, and a three-phase 380v power supply is rotated strongly to work.

At least one embodiment of the present disclosure provides a fan, as shown in fig. 20, including at least two blades 31 disposed on a support shaft 30, as shown in fig. 21, each blade 31 is wound on the support shaft 30, each blade 31 includes a start end and a tail end, the start end and the tail end of each blade 31 are spaced apart in an axial direction of the support shaft 30, and adjacent two blades 31 include overlapping portions 3321 in an axial direction D of the support shaft 30, and an air circulation channel 33 is formed where the adjacent two blades 31 overlap. For example, each fan blade 31 and the support shaft 30 may be integrally formed, but are not limited thereto. For example, the blades may be staggered.

As shown in fig. 20 and 21, the fan is illustrated as including two blades 31, i.e., a first blade 311 and a second blade 312. It should be noted that the number of blades of the fan provided by the embodiments of the present disclosure is not limited to the number shown in the drawings. Fig. 20, 21 and 22 show a start end E11, an end E12 of the first fan blade 311, a start end E21, and an end E22 of the second fan blade 312. The beginning and ending ends, in relative terms, may refer to one end and the other end of the fan blade wound around the support shaft, respectively. For example, each blade may be wrapped around the support shaft at least one revolution to form a long blade fan to facilitate the formation of an elongated air flow path.

In the fan provided in at least one embodiment of the present disclosure, in the axial direction D of the support shaft 30, two adjacent fan blades 31 overlap, and an air circulation channel 33 is formed at the overlapping position, so that air can be transferred from one end to the other end of the support shaft 30 in the axial direction D of the support shaft 30 after passing through the long and narrow air circulation channel 33, the air circulation channel 33 can push air flow, and the air sent is uniform, fine and natural.

The fan provided by at least one embodiment of the present disclosure may have long blades, and may be sealed, reduce gaps, improve the external-to-internal viewing angle, mute, comfort, safety, compact structure, and may have multiple speed regulation to regulate ventilation.

In at least one embodiment of the present invention, the fan blades of the fan are arranged to drive the airflow to flow along the axial direction of the support shaft. For example, the fan shown in fig. 20, if rotated clockwise, sends out the air flow perpendicularly to the paper surface, and if rotated counterclockwise, the air flow inwardly perpendicularly to the paper surface. The flow direction of the air flow can be adjusted according to the requirements.

In order to obtain a better silencing effect, the fan according to an embodiment of the present disclosure, as shown in fig. 20, 21 and 22, the blades are symmetrically arranged. For example, the first fan blade 311 and the second fan blade 312 are symmetrically disposed.

According to the fan provided in an embodiment of the present disclosure, the number of fan blades 31 is the same as the number of air circulation channels 33. As shown in fig. 20, 21 and 22, two air flow passages 33 are formed between the first fan blade 311 and the second fan blade 312.

In order to further reduce the intake noise and/or the exhaust noise, the fan according to an embodiment of the present disclosure, as shown in fig. 20, 21 and 22, the start ends of the blades 31 are located on the same circumference of the support shaft 30.

In order to further reduce the intake noise and/or the exhaust noise, according to an embodiment of the present disclosure, as shown in fig. 20, 21 and 22, the tail ends of the blades 31 are located on the same circumference of the support shaft 30.

According to the fan provided by an embodiment of the present disclosure, as shown in fig. 21 and 22, a contact line is formed at a contact position of each fan blade 31 and the support shaft 30, and each point on the contact line is located on a different circumference of the support shaft 30. In fig. 21 and 22, a contact line 35 is illustrated as an example where the first fan blade 311 contacts the support shaft 30.

In order to better form a long and narrow air circulation channel and facilitate arrangement of blades, according to an embodiment of the present disclosure, as shown in fig. 23, a projection of a contact line on an axial plane including a start end or an end forms an angle with an axial line of the support shaft 30 in a range of 45 ° to 80 °, further for example, in an angle range of 60 ° to 80 °. Fig. 23 shows that the projection of the contact line 35 on the axial plane including the start end (or the end) makes an angle θ with the axial line of the support shaft 30. The axial surface is a surface including an axial center.

Fig. 24 shows a schematic top view of the fan of fig. 20. According to a fan provided in an embodiment of the present disclosure, as shown in fig. 24, each air circulation passage 33 is around at least one quarter of the circumference of the support shaft 30. For example, the air flow passage 33 surrounds at least half a circumference of the support shaft 30. Further, for example, the air circulation passage 33 surrounds the support shaft 30 for one revolution.

According to a fan provided in an embodiment of the present disclosure, as shown in fig. 24, each fan blade 31 may include a first sector 3111, a second sector 3112 and a third sector 3113; the first sector 3111 extends from the start end E11, the outer edge thereof is gradually distant from the axis 300 of the support shaft 30, the outer edge of the second sector 3112 is equidistant from the axis 300, the third sector 3113 is gradually gathered toward the end, and the outer edge thereof is gradually close to the axis 300 of the support shaft 30; the first sector 3111 is connected to the second sector 3112, and the second sector 3112 is connected to the third sector 3113. Fig. 24 illustrates the first fan blade 311 as an example. The axis may be an axis, and the axial direction D may be the direction of the axis 300, but is not limited thereto.

According to the fan provided in an embodiment of the present disclosure, as shown in fig. 24, the projections of the first sector 3111 and the third sector 3113 in a plane perpendicular to the axial direction may be semicircular.

According to the fan provided in an embodiment of the present disclosure, as shown in fig. 24, the projection of the second sector 3112 in the plane perpendicular to the axial direction is semicircular, and the diameter of the projection of the second sector 3112 in the plane perpendicular to the axial direction is smaller than the sum of the diameter of the projection of the first sector 3111 in the plane perpendicular to the axial direction and the diameter of the projection of the third sector 3113 in the plane perpendicular to the axial direction.

According to the fan provided in an embodiment of the present disclosure, as shown in fig. 24, the projected diameter of the first sector 3111 in the plane perpendicular to the axial direction is equal to the projected diameter of the third sector 3113 in the plane perpendicular to the axial direction.

In the fan according to an embodiment of the present disclosure, as shown in fig. 24, the first fan blade 311 is shown by a bold line, the thin line represents the second fan blade 312, and the broken line is the edge of the fan blade that is not seen in the top view. For the first fan blade 311, the tangent line of the start end E11 is parallel to the tangent line of the end E12. For the second blade 312, the tangent line of the start end E21 is parallel to the tangent line of the end E22.

According to a fan provided in an embodiment of the present disclosure, as shown in fig. 25, the support shaft 30 includes a hole 301, and the hole 301 of the support shaft 30 may be connected with a screw. Through the screw pushing, the mute design is achieved. Fig. 26 and 27 are perspective views illustrating other views of a fan according to an embodiment of the present disclosure. For example, the fan may further include a driving component to drive the screw to rotate, thereby driving the fan blades to rotate to achieve air flow transmission.

The design of the fan blade of the fan provided by at least one embodiment of the invention can be applied to the fan of an air purification system for ventilation and also applied to a household appliance fan, and when the fan is applied to the fan arranged on a peripheral wall, the indoor and outdoor sides are completely isolated and sealed through the sight among the fan blades by the airtight design of the fan blade provided by the embodiment of the invention, so that the effects of theft prevention and confidentiality are achieved. The air supply mode utilizes the long blades of the screw to push air flow, the pushed air forms uniform long-flow air, the air is natural and comfortable, the burning feeling caused by strong collision to the skin of a human body is avoided, and meanwhile, the cool feeling is brought.

The fan provided by at least one embodiment of the present disclosure may be applied to an air purifier provided by at least one embodiment of the present disclosure, and may adjust the ventilation flow rate by multiple steps to cooperate with the air purifier. It should be noted that, the induced draft fan used in the air purifier provided in the embodiment of the present disclosure may also adopt the fan provided in at least one embodiment of the present disclosure.

It should be noted that, in the embodiment of the present disclosure, when the air purifier is provided with a plurality of air purification modules 10, the particulate matter interception portion 20 and/or the particulate matter electrostatic capturing portion 30 may also be disposed in the air purifier corresponding to the plurality of air purification modules 10.

The embodiment of the disclosure provides a purifier, which belongs to an air inlet type purifier, and can adopt a wall-hanging and window-type design, so that the space can be greatly saved, dangerous situations can be avoided, the problem of space occupation caused by the placement of the air purifier can be solved, and particularly, the risk factors such as child touch and the interference of the actions of the elderly can be solved. Under the condition of having an external wall, the air purifier can be directly applied, and purified air can be pushed to a deeper room in a pipeline conveying mode, so that the air purifier has multiple purposes. Can be assembled and separated into pipelines for transportation in a central mode for use in large places, thereby achieving multiple purposes. That is, a central purge sub-piping system may be formed to facilitate air purging of multiple rooms. For example, the gas exiting the outlet chamber may be routed through a conduit into at least one room/space as desired.

An air purifier provided according to an embodiment of the present disclosure may include: 1. and (5) outdoor air intake. 2. The filter screen intercepts particulate matter. 3. Activated carbon adsorbs toxic gases. 4. The comfortable ventilation mode of capturing fine particles by static electricity realizes complete clean circulation of indoor air.

The purifier provided by the embodiment of the disclosure is suitable for being used in different sizes or any places, and on the premise of scientifically utilizing indoor space, the air inlet type purification treatment is adopted, so that the purifier can be used in a single room (single machine), can also be assembled for working in a central mode by one machine, and then purified air is conveyed to all needed rooms by using branch pipelines (central compatibility). Of course, the air purification module 10 and/or the air purifier provided in the embodiments of the present disclosure may also be used for purifying indoor air.

Features of the same and different embodiments of the disclosure may be combined with each other without conflict.

The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it is intended to cover the scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. An air purifier comprises an air purifying module,

the air purification module comprises a shell, wherein the shell is internally provided with a baffle plate which divides the shell into a first cavity and a second cavity, the baffle plate is provided with a plurality of through holes for enabling the first cavity and the second cavity to be in air circulation, the second cavity is configured to contain an air filtering material, the first cavity is configured to receive air to be filtered or flow out of the air filtered by the air filtering material,

the air purifier also comprises a fan, wherein the fan comprises at least two fan blades arranged on a supporting shaft, each fan blade is coiled on the supporting shaft and comprises a starting end and a tail end, the starting end and the tail end of each fan blade are axially spaced from each other along the supporting shaft, adjacent two fan blades comprise overlapped parts along the direction of the supporting shaft along the axial direction of the supporting shaft, an air circulation channel is formed at the overlapped part of the adjacent two fan blades,

In the fan, each fan blade comprises a first fan face part, a second fan face part and a third fan face part; the first fan surface part extends from the initial end, the outer edge of the first fan surface part is gradually far away from the axial lead of the supporting shaft, the outer edge of the second fan surface part is equal to the axial lead in distance, the third fan surface part is gradually folded towards the tail end, and the outer edge of the third fan surface part is gradually close to the axial lead of the supporting shaft; the first fan surface part is connected with the second fan surface part, the second fan surface part is connected with the third fan surface part,

the contact position of each fan blade and the supporting shaft forms a contact line, each point on the contact line is positioned on different circumferences of the supporting shaft,

the projection of the contact line on the axis surface comprising the starting end or the tail end forms an angle of 45-80 degrees with the axis line of the supporting shaft,

the air purification module comprises an air inlet side and an air outlet side which are opposite to each other, the arrangement direction of the first chamber and the second chamber is intersected with the direction from the air inlet side to the air outlet side, one of the first chamber and the second chamber is an air inlet chamber, the other is an air outlet chamber,

the arrangement direction of the first chamber and the second chamber is perpendicular to the direction from the air inlet side to the air outlet side.

2. The air purifier of claim 1 wherein the second chamber contains the air filter material therein, the air to be filtered entering the first chamber, flowing through the air filter material, exiting the second chamber; alternatively, air to be filtered enters the second chamber, flows through the air filter material, and exits the first chamber.

3. The air cleaner of claim 1, wherein the air intake chamber includes a first air guide disposed obliquely, the first air guide being gradually closer to the baffle plate in a direction from the air intake side to the air outlet side.

4. An air cleaner according to claim 3 wherein the first gas deflector is an arcuate plate or plate.

5. The air purifier of claim 3 wherein the first gas baffle is non-intersecting with the baffle.

6. The air cleaner of any one of claims 1 to 5, wherein the air outlet chamber includes a second air guide disposed obliquely, the second air guide being gradually distant from the baffle in a direction from the air inlet side to the air outlet side.

7. The air purifier of claim 6, wherein the second gas guiding portion is an arcuate plate or a flat plate.

8. The air purifier of claim 6, wherein the second gas deflector is at an angle in the range of 45 ° to 85 ° to the baffle.

9. The air cleaner of any one of claims 1-5, further comprising a particulate matter interception portion, wherein the particulate matter interception portion is disposed on the intake side and configured to intercept particulate matter in gas entering the intake chamber.

10. The air cleaner according to claim 9, wherein the particulate matter blocking portion includes a plurality of first wires whose mesh diameters decrease in order in a direction from the inlet side to the outlet side, and a second wire disposed between adjacent two of the first wires, the second wire having a mesh diameter larger than that of the first wire.

11. The air purifier of claim 10, wherein the first wire mesh is in the range of 80-300 mesh and the second wire mesh is in the range of 30-70 mesh.

12. The air purifier of any one of claims 1-5, further comprising a particulate matter electrostatic capture portion, wherein the particulate matter electrostatic capture portion is disposed on the air outlet side of the air purification module and is configured to capture particulate matter in the air flowing from the air outlet chamber.

13. The air purifier of any one of claims 1-5, wherein the air filter material comprises granular or columnar activated carbon.

14. The air purifier of any one of claims 1-5, wherein the first chamber includes a plurality of first subchambers and the second chamber includes a plurality of second subchambers, and a baffle is disposed between adjacent first subchambers and between adjacent second subchambers.

15. The air purifier of any one of claims 1-5, wherein each fan blade is coiled around the support shaft for at least one revolution.

16. The air purifier of any one of claims 1-5, wherein each air flow channel in the fan is about at least one quarter of a circumference of the support shaft.

17. The air cleaner of any one of claims 1 to 5, wherein the number of the fan blades is the same as the number of the air circulation passages in the fan.

18. The air cleaner according to any one of claims 1 to 5, wherein a projection of the first fan portion in a plane perpendicular to the axial direction and a projection of the third fan portion in a plane perpendicular to the axial direction are semicircular, a projection of the second fan portion in a plane perpendicular to the axial direction is semicircular, and a diameter of a projection of the second fan portion in a plane perpendicular to the axial direction is smaller than a sum of a diameter of a projection of the first fan portion in a plane perpendicular to the axial direction and a diameter of a projection of the third fan portion in a plane perpendicular to the axial direction.

19. The air cleaner of any one of claims 1 to 5, wherein a tangent line at a start end of each fan blade is parallel to a tangent line at an end of each fan blade.

20. The air purifier of any one of claims 1-5, wherein a diameter of the first sector portion and a diameter of the third sector portion are equal.

21. The air purifier of any one of claims 1-5, wherein each fan blade is symmetrically disposed.

22. The air purifier of any one of claims 1-5, wherein a projection of the contact line onto an axial plane including the beginning or ending is in the range of 60 ° -80 ° from an axial line of the support shaft.

23. The air purifier of any one of claims 1-5, wherein the start end of each fan blade is located on the same circumference of the support shaft.

24. The air purifier of any one of claims 1-5, wherein the trailing end of each fan blade is located on the same circumference of the support shaft.

25. The air purifier of any one of claims 1-5, wherein the support shaft includes a bore, the bore of the support shaft being coupled to a screw.