CN111437670A - Air purifier - Google Patents
Air purifier Download PDFInfo
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- CN111437670A CN111437670A CN201910045854.4A CN201910045854A CN111437670A CN 111437670 A CN111437670 A CN 111437670A CN 201910045854 A CN201910045854 A CN 201910045854A CN 111437670 A CN111437670 A CN 111437670A
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- 238000003915 air pollution Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/106—Ring-shaped filtering elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/50—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for air conditioning
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The present invention provides an air purifier, comprising: the shell is provided with an indoor air inlet and an indoor air outlet; the filter element is arranged in the shell, and indoor air enters the shell from the indoor air inlet and then reaches the filter element for filtering; the fresh air system is connected with the shell and is provided with an outdoor air inlet, and outdoor air enters the shell through the outdoor air inlet; and the laminar flow fan is arranged in the shell and is provided with an air inlet channel, the indoor air and/or the outdoor air enter the shell after being filtered by the filter element arrives at the air inlet channel, the laminar flow fan arrives at the air inlet channel through the disturbance of fluid viscosity effect to form laminar flow air, and the laminar flow air is discharged from the air outlet of the shell. According to the air purifier, the laminar flow fan and the fresh air system are arranged in the shell, so that the use experience of a user is effectively improved.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to an air purifier.
Background
With the rapid development of economy, a large amount of energy is consumed to generate a large amount of harmful substances, and the earth where people live is full of particles, sulfur oxides, nitrogen oxides and hydrocarbons, so that the health of people is seriously threatened. In order to make the air fresh, an air purifier is required to purify the air. At present, the air purifier mainly uses a centrifugal fan or an axial fan to supply air in a single direction, so that the air supply noise is high, and the noise value is close to the limit under the limitation of performance indexes. Meanwhile, the existing air purifier generally only processes indoor air and does not have the function of supplementing fresh air. In addition, most users consider that the clean air generated by the existing air purifier cannot be uniformly distributed in a room or a closed space, and have certain distribution limitation.
Disclosure of Invention
The invention aims to provide an air purifier which utilizes a laminar flow fan to supply air, utilizes indoor air and outdoor air, and has low noise, high air quantity and high air pressure.
A further object of the present invention is to provide filtered outdoor air for use with a laminar flow fan.
Still another further purpose of the present invention is to avoid the air-out blow-through of the air purifier to the user, and to improve the user experience.
The invention provides the following technical scheme:
an air purifier, comprising:
the shell is provided with an indoor air inlet and an indoor air outlet;
the filter element is arranged in the shell, and indoor air enters the shell from the indoor air inlet and then reaches the filter element for filtering;
the fresh air system is connected with the shell and is provided with an outdoor air inlet, and outdoor air enters the shell through the outdoor air inlet; and
the laminar flow fan is arranged in the shell and is provided with an air inlet channel, indoor air filtered by the filter element and/or outdoor air entering the shell reach the air inlet channel, the laminar flow fan disturbs the air reaching the air inlet channel through a fluid viscosity effect to form laminar flow air, and the laminar flow air is discharged out of the shell from the air outlet.
Optionally, the fresh air system includes: the first end of the fresh air pipeline is positioned outdoors, an outdoor air inlet is arranged, and the second end of the fresh air pipeline extends into the shell; and the outdoor air enters the fresh air pipeline through the outdoor air inlet and is driven by the centrifugal fan to move into the shell.
Optionally, the fresh air system further comprises: a volute having an inlet and an outlet; the centrifugal fan is arranged in the volute and drives outdoor air to enter the volute from the inlet and turn in the volute and then enter the shell from the outlet.
Optionally, the fresh air system further comprises: the fresh air filter element is arranged in the fresh air pipeline, and the centrifugal fan drives the outdoor air filtered by the fresh air filter element to enter the volute from the inlet.
Optionally, an air duct plate is arranged in the shell, and the air duct plate is configured to form an air duct with at least one part of the filter element; the outlet of the volute is communicated with the air duct, so that the outdoor air is discharged from the outlet, enters the air duct, is filtered by the filter element and then reaches the air inlet channel.
Optionally, the laminar flow fan comprises:
the laminar flow fan comprises a plurality of annular discs which are arranged in parallel at intervals, have the same central axis and the centers of the annular discs form an air inlet channel together, and the air entering the air inlet channel reaches the gaps among the annular discs; and
and the motor is connected with the laminar flow fan and is configured to drive the plurality of annular discs to rotate, so that the air boundary layer close to the surfaces of the plurality of annular discs is driven by the plurality of rotating annular discs to rotate and move from inside to outside to form laminar flow wind.
Optionally, a laminar flow fan and a motor are arranged at the upper part in the shell; the upper part of the shell is provided with an air outlet corresponding to the position of the laminar flow fan; the filter element is an annular filter element and is vertically arranged below the laminar flow fan; the casing is formed with in the below of filter core and holds the chamber, and centrifugal fan and spiral case set up in holding the intracavity, and the opening of the export of spiral case upwards.
Optionally, the laminar flow fan further comprises: a driving disk arranged in parallel with the plurality of annular disks at intervals; and a connecting member penetrating the drive disk and the plurality of annular disks to connect the plurality of annular disks to the drive disk; the motor is configured to directly drive the drive disk to rotate, and the drive disk drives the plurality of annular disks to rotate.
Optionally, the drive disk is formed with a recess at its center toward the plurality of annular disks; the air purifier still includes: the fixing mechanism is arranged in the shell and comprises a fixing plate and a fixing frame, and the motor is arranged between the fixing plate and the fixing frame; the fixing frame is provided with a body part and a claw part extending from the body part to the fixing plate; the body part is provided with a through hole, and an output shaft of the motor extends out of the fixing frame from the through hole and then is connected with the laminar flow fan; the clamping claw part is used for being fixed with the fixing plate and is matched with the concave part.
Optionally, the connecting piece is a blade, and the cross section of the blade is provided with a double-arc protruding towards the rotating direction of the annular disk, and the double-arc comprises an inner arc and a back arc which are sequentially arranged along the rotating direction of the annular disk; the inner arc and the back arc have different circle centers, and two ends of the inner arc and the back arc are intersected, or the inner arc and the back arc have the same circle center and are arranged in parallel.
Optionally, the annular disc is arranged according to one or more of the following structures:
the distance between two adjacent annular disks is gradually increased along the flowing direction of the airflow in the air inlet channel;
the inner diameters of the plurality of annular disks are gradually reduced along the flowing direction of the airflow in the air inlet channel;
each annular disk is an arc-shaped disk which is gradually close to the driving disk from the inner side to the outer side.
According to the air purifier, the laminar flow fan is arranged in the shell, the fresh air system is also arranged, indoor air filtered by the filter element and outdoor air introduced by the fresh air system both enter the air inlet channel of the laminar flow fan, the laminar flow fan disturbs the air through the fluid viscosity effect to realize laminar flow air supply, the air supply efficiency is high, the noise is low, the air quantity is high, the air pressure is high, and the use experience of users of the air purifier is effectively improved.
Furthermore, the air purifier provided by the invention is more user-friendly by arranging the fresh air filter element or the air duct to filter outdoor air and then supplying air by the laminar flow fan.
Furthermore, the laminar flow fan and the air outlet are arranged on the upper portion of the air purifier, the annular filter element and the fresh air system are arranged below the laminar flow fan, air supply from the upper portion is achieved, air is prevented from being directly blown to a user, use experience of the user is improved, and 360-degree uniform air supply can be achieved under the optimal condition.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic perspective view of an air purifier according to one embodiment of the present invention.
Fig. 2 is a schematic exploded view of the air purifier shown in fig. 1.
Fig. 3 is a schematic cross-sectional view of the air purifier shown in fig. 1.
Fig. 4 is a schematic exploded view of an air purifier according to another embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of the air cleaner shown in fig. 4.
Fig. 6 is another schematic cross-sectional view of an air purifier according to an embodiment of the present invention.
Fig. 7 is a schematic perspective view of a filter cartridge of an air cleaner according to an embodiment of the present invention.
Fig. 8 is a schematic perspective view of a filter cartridge of an air cleaner according to an embodiment of the present invention.
Fig. 9 is a schematic perspective view of a housing of an air cleaner according to an embodiment of the present invention.
Fig. 10 is a schematic perspective view of a wind shielding member suitable for use in the air cleaner shown in fig. 9.
Fig. 11 is a schematic perspective view of a partition plate of an air cleaner according to one embodiment of the present invention.
Fig. 12 is a schematic perspective view of a fixing plate of an air cleaner according to one embodiment of the present invention.
Fig. 13 is a schematic perspective view of a laminar flow fan of an air cleaner according to one embodiment of the present invention.
Fig. 14 is a schematic diagram of the blowing principle of the laminar flow fan of the air cleaner shown in fig. 1.
Fig. 15 is a velocity profile and force profile of a laminar flow fan of the air purifier shown in fig. 1.
Fig. 16 is a schematic cross-sectional view of the laminar flow fan shown in fig. 13.
Fig. 17 is a schematic perspective view of another perspective view of the laminar flow fan shown in fig. 13.
Fig. 18 is a schematic perspective view of still another perspective view of the laminar flow fan shown in fig. 13.
Fig. 19 is a schematic cross-sectional view of a securing mechanism, a motor, and a laminar flow fan of an air cleaner in cooperation, according to one embodiment of the present invention.
Fig. 20 is a schematic exploded view of a motor and a fixing mechanism of an air cleaner according to an embodiment of the present invention.
Fig. 21 is a schematic front view of a laminar flow fan of an air purifier according to one embodiment of the present invention.
Fig. 22 is a schematic perspective view of another perspective of the laminar flow fan shown in fig. 21.
Fig. 23 is a schematic view of the air circulation of the laminar flow fan shown in fig. 21.
Fig. 24 is a schematic cross-sectional view of the laminar flow fan shown in fig. 21.
Fig. 25 is a schematic diagram of the relationship between the chord length of the blade of the laminar flow fan shown in fig. 21 and the air volume and the air pressure.
Fig. 26 is a schematic cross-sectional view of a laminar flow fan of an air cleaner having a double-arc blade according to an embodiment of the present invention.
Fig. 27 is a schematic view showing the relationship between the installation angle of the double circular arc blade and the air volume and the wind pressure.
Fig. 28 is a cross-sectional schematic view of a laminar flow fan of an air purifier having an aero blade, according to one embodiment of the present invention.
FIG. 29 is a schematic view of the relationship between the installation angle of the aviation blade and the air volume and the air pressure.
Fig. 30 is a schematic front view of a laminar flow fan in which the annular disk pitch of a laminar flow fan of an air cleaner gradually changes according to one embodiment of the present invention.
Fig. 31 is a schematic perspective view of the laminar flow fan shown in fig. 30.
Fig. 32 is a schematic diagram of the relationship between the gradual pitch change of the plurality of annular disks and the air volume and the air pressure of the laminar flow fan shown in fig. 30.
Fig. 33 is a schematic cross-sectional view of a laminar flow fan with a graded inner diameter of an annular disk of a laminar flow fan of an air cleaner according to one embodiment of the present invention.
Fig. 34 is a schematic diagram of the relationship between the inner diameter gradient of a plurality of annular disks and the air volume and the air pressure of the laminar flow fan shown in fig. 33.
Fig. 35 is a schematic central angle view of an inner and outer diameter connecting line of a plurality of annular disks of a laminar flow fan of which the annular disks of the laminar flow fan of the air cleaner are arc-shaped disks on the same longitudinal section passing through a central axis according to an embodiment of the present invention.
Fig. 36 is a schematic diagram of the relationship between the central angle of the laminar flow fan shown in fig. 35 and the air volume and the air pressure.
Detailed Description
Fig. 1 is a schematic perspective view of an air purifier 100 according to one embodiment of the present invention. Fig. 2 is a schematic exploded view of the air purifier 100 shown in fig. 1. Fig. 3 is a schematic cross-sectional view of the air purifier 100 shown in fig. 1. The air purifier 100 of embodiments of the present invention may generally include a housing 200, a filter element 120, a fresh air system 900, and a laminar flow fan 110. The housing 200 is provided with an indoor air inlet 201 and an indoor air outlet 202. The filter element 120 is disposed in the casing 200, and the indoor air enters the casing 200 from the indoor air inlet 201 and then reaches the filter element 120 for filtering. The fresh air system 900 is connected to the housing 200 and has an outdoor air inlet 203, and outdoor air enters the housing 200 through the outdoor air inlet 203. The laminar flow fan 110 is disposed in the housing 200, an air inlet channel 302 is formed at the center of the laminar flow fan, the indoor air filtered by the filter element 120 and/or the outdoor air entering the housing 200 reach the air inlet channel 302, the laminar flow fan 110 disturbs the air reaching the air inlet channel 302 by a fluid viscosity effect to form laminar flow air, and the laminar flow air is discharged out of the housing 200 from the air outlet 202.
According to the air purifier 100 provided by the embodiment of the invention, the laminar flow fan 110 is arranged in the shell 200, the fresh air system 900 is also arranged, indoor air filtered by the filter element 120 and outdoor air introduced by the fresh air system 900 can enter the air inlet channel 302 of the laminar flow fan 110, the laminar flow fan 110 disturbs the air through the fluid viscosity effect to realize laminar flow air supply, the air supply efficiency is high, the noise is low, the air quantity is high, the air pressure is high, the use experience of a user of the air purifier 110 is effectively improved, and the air purifier is novel in appearance, good in function and excellent in quality.
The fresh air system 900 of the air purifier 100 according to the embodiment of the present invention is a closable system, that is, when the outdoor air is good, the fresh air system 900 is opened, and the outdoor air enters the housing 200 and then is acted by the laminar flow fan 110 to form laminar flow air. The fresh air system 900 is turned off when there is outdoor air pollution or other situations where fresh air is not needed.
In some embodiments, the fresh air system 900 of the air purifier 100 of embodiments of the present invention includes: fresh air duct 901 and centrifugal fan 902. The first end of the fresh air duct 901 is located outdoors and is provided with an outdoor air inlet 203, and the second end extends into the housing 200. Outdoor air enters the fresh air duct 901 through the outdoor air inlet 203 and is driven by the centrifugal fan 902 to move into the housing 200. The centrifugal fan 902 includes a centrifugal fan and a motor, which may be assembled by using an existing centrifugal fan and an existing motor, and the structure thereof will not be described in detail herein.
In some embodiments, the fresh air system 900 of the air purifier 100 of the present invention further includes: a volute 903 having an inlet and an outlet. The centrifugal fan 902 is disposed in the volute 903, and drives outdoor air into the volute 903 from an inlet and into the housing 200 from an outlet after turning in the volute 903. In one embodiment, the inlet and outlet of the volute 903 are configured such that air entering from the inlet turns 90 ° and exits through the outlet.
In order to prevent outdoor air from contaminating indoor air, the outdoor air is filtered and then reaches the intake duct 302.
In some embodiments, the fresh air system 900 further comprises: the fresh air filter element 905 is arranged in the fresh air pipeline 901, and the centrifugal fan 902 drives the outdoor air filtered by the fresh air filter element 905 to enter the volute 903 from the inlet of the volute 903. The fresh air filter element 905 may have an outer shape that matches the inner shape of the fresh air duct 901. For example, the fresh air duct 901 is a hollow cylinder, and the fresh air filter element 905 is a solid cylinder and has an outer diameter slightly smaller than the inner diameter of the fresh air duct 901. For another example, the fresh air duct 901 is a hollow cuboid with a rectangular longitudinal section, and the fresh air filter element 905 is a solid cuboid with a length and width slightly smaller than that of the rectangle with the longitudinal section of the fresh air duct 901. The specific structural components, such as material and preparation process, of the fresh air filter element 905 can be made of materials and processes disclosed in the prior art, and are not described in detail herein.
In other embodiments, a duct plate 904 is disposed within housing 200, with duct plate 904 configured to form a duct 941 with at least a portion of filter element 120; the outlet of the volute 903 is communicated with the air duct 941, so that the outdoor air is discharged from the outlet of the volute 903, enters the air duct 941, is filtered by the filter element 120, and then reaches the air inlet channel 302.
In some embodiments, the laminar flow fan 110 includes a laminar flow fan 300 and a motor 400. Fig. 13 is a schematic perspective view of the laminar flow fan 300. The laminar flow fan 300 includes a plurality of annular disks 301, the plurality of annular disks 301 are spaced apart from each other and arranged in parallel, have the same central axis, and have centers that collectively form an air inlet channel 302, and enter the air inlet channel 302 to reach gaps between the plurality of annular disks 301. The motor 400 is connected to the laminar flow fan 300 and configured to drive the plurality of annular disks 301 to rotate, so that the air boundary layer 304 near the surfaces of the plurality of annular disks 301 is driven by the plurality of annular disks 301 to rotate from inside to outside to form laminar flow wind. Where air boundary layer 304 is a very thin layer of air adjacent to the surface of each disk.
Fig. 14 is a schematic diagram of the air supply principle of the laminar flow fan 110. The motor 400 drives the plurality of annular disks 301 to rotate at a high speed, and air in the intervals of the annular disks 301 contacts and moves mutually, so that the air boundary layer 304 close to the surfaces of the annular disks 301 is driven by the rotating annular disks 301 to rotate from inside to outside to form laminar air under the action of viscous shear force tau. Fig. 15 is a velocity profile and force profile of laminar flow fan 110 of air purifier 100 according to an embodiment of the present invention, which is a schematic illustration of a viscous shear force profile τ (y) and a velocity profile u (y) experienced by air boundary layer 304. The viscous shear experienced by air boundary layer 304 is actually the resistance that the individual disks create to air boundary layer 304. The axis of abscissa in fig. 15 refers to the distance in the moving direction of air boundary layer 304, and the axis of ordinate refers to the height of air boundary layer 304 in the direction perpendicular to the moving direction. v. ofeThe velocity of the air flow at each point within air boundary layer 304, the thickness of air boundary layer 304, τwThe variables y in τ (y) and u (y) refer to the height of the cross-section of air boundary layer 304 in the direction perpendicular to the direction of travel, L the distance between a point on the inner circumference of annular disc 301 and a point on the surface of annular disc 301, then τ (y) is the distribution of viscous shear forces experienced at the height of the cross-section of air boundary layer 304 at distance L of y, and u (y) is the velocity distribution at the height of the cross-section of air boundary layer 304 at distance L of y.
The overall shape of the housing 200 of the air purifier 100 according to the embodiment of the present invention may be designed according to actual needs, such as a cylinder, a rectangular parallelepiped, a cube, and other shapes. In some embodiments, the housing 200 is a rectangular parallelepiped structure having four sides and upper and lower bottom surfaces. One side or a plurality of sides of the four sides can be selected to be provided with the indoor air inlet 201 to form an air inlet side. The filter element 120 may be a ring filter element 600, a plate filter element 700, or the like. Fig. 7 is a schematic perspective view of an annular filter element 600 of the air purifier 100 according to one embodiment of the invention. The annular filter element 600 is annular in cross section with a hollow passage in the center. Fig. 8 is a schematic perspective view of a flat panel filter cartridge 700 of the air purifier 100 according to one embodiment of the invention. The flat panel filter element 700 is a filter element that is a rectangular parallelepiped as a whole. The number of air inlets of the air purifier 100 using different types of filter elements, the location of the fresh air system 900, the manner of filtering the outdoor air, the location of the duct board 904, etc. on the housing 200 can be adjusted as appropriate.
In some embodiments, the laminar flow fan 300 and the motor 400 are disposed at an upper portion inside the housing 200; the housing 200 is provided with an air outlet 202 at a position corresponding to the laminar flow fan 300 at an upper portion thereof; the filter element 120 is vertically disposed below the laminar flow fan 300; the housing 200 is formed with a receiving chamber below the filter element 120, the centrifugal fan 902 and the scroll 903 are disposed in the receiving chamber, and an outlet of the scroll 903 opens upward. In order to move the indoor air and/or the outdoor air filtered by the filter element 120 or the outdoor air filtered by the fresh air filter element 905 into the air intake channel 302 as much as possible, in some embodiments, the air purifier 100 of the embodiment of the present invention further includes: two partition plates 101, one is disposed between the laminar flow fan 300 and the filter element 120, and the other is disposed between the volute 903 and the housing 200 or between the volute 903 and the air duct plate 904 and the filter element 120. Fig. 11 is a schematic perspective view of the partition 101 of the air purifier 100 according to one embodiment of the present invention. The two partitions 101 may be identical or different in shape, and their specific shapes may be designed according to the structures of the laminar flow fan 300, the filter element 120, the air duct plate 904, the volute 903 and the housing 200. For example, in one embodiment, the housing 200 has a rectangular parallelepiped shape, and the partition 101 has a square cross section and a hollow structure in a central portion thereof; one side of the hollow structure of the partition plate 101 arranged at the upper part is butted with the hollow channel of the annular filter element 600, and the other side is butted with the air inlet channel 302; the hollow structure of the partition 101 disposed at the lower portion has one side interfacing with the hollow passage of the ring filter 600 and the other side interfacing with the outlet of the volute 903.
In one embodiment, the housing 200 surrounds the air outlet 202 at a position corresponding to the laminar flow fan 300 at an upper portion thereof, so as to realize 360 ° air supply.
As shown in fig. 2 and 3, in one embodiment, a laminar flow fan 300 and a motor 400 are disposed at an upper portion in a housing 200, a plurality of indoor air inlets 201 are disposed at a middle portion of the housing 200 to form two opposite air inlet sides, a filter element 120 is an annular filter element 600, the housing 200 further forms an accommodating cavity below the annular filter element 600, a centrifugal fan 902 and a scroll 903 are both disposed in the accommodating cavity, an opening of an outlet of the scroll 903 faces upward, and a fresh air filter element 905 is disposed in a fresh air duct 901. Fig. 6 is another schematic cross-sectional view of an air purifier 100 according to one embodiment of the invention. Referring to fig. 3 and 6, flow directions of outdoor air and indoor air are shown, respectively. Outdoor air enters the fresh air pipeline 901 through the outdoor air inlet 203, reaches the fresh air filter element 905, is filtered, and then reaches the hollow channel of the annular filter element 600 through the inlet and the outlet of the volute 903. The indoor air is a hollow channel from two opposite air inlet sides of the housing 200 to the annular filter element 600, filtered and then to the annular filter element 600.
Fig. 4 is a schematic exploded view of an air purifier 100 according to another embodiment of the present invention. Fig. 5 is a schematic cross-sectional view of the air purifier 100 shown in fig. 4. In one embodiment, the laminar flow fan 300 and the motor 400 are disposed at the upper part in the housing 200, the plurality of indoor air inlets 201 are disposed at the middle part of the housing 200 to form two opposite air inlet sides, the filter element 120 is an annular filter element 600, the housing 200 further forms a receiving cavity below the annular filter element 600, the centrifugal fan 902 and the scroll 903 are both disposed in the receiving cavity, an outlet of the scroll 903 opens upward, and meanwhile, an air duct plate 904 is further disposed between the non-air inlet side in the housing 200 and the annular filter element 600, and an air duct 941 is formed between the air duct plate 904 and the annular filter element 600 at the non-air inlet side part. Fig. 6 is another schematic cross-sectional view of an air purifier 100 according to one embodiment of the invention. Referring to fig. 5 and 6, flow directions of outdoor air and indoor air are shown, respectively. Outdoor air enters the fresh air duct 901 through the outdoor air inlet 203, passes through the inlet and the outlet of the volute 903 to reach the air duct 941, and is then filtered by the portion of the annular filter element 600 forming the air duct 941 to reach the hollow channel of the annular filter element 600. The indoor air reaches the hollow channel of the ring filter 600 from the two air inlet sides of the casing 200 after being filtered by the ring filter 600.
Fig. 9 is a schematic perspective view of the housing 200 of the air purifier 100 according to one embodiment of the present invention. Fig. 10 is a schematic perspective view of a wind shielding member 500 suitable for use in the air purifier 100 shown in fig. 9. The air purifier 100 of the embodiment of the present invention further includes: a wind shielding member 500 disposed outside the laminar flow fan 300 and between the casing 200 and the laminar flow fan 300, and having a gap 501; the casing 200 is provided with an air outlet 202 at a position corresponding to the notch 501, and laminar air flows out of the casing 200 through the notch 501 and the air outlet 202 in sequence. For example, when the installation position of the air purifier 100 is at a corner where two wall surfaces are perpendicular, the wind shielding member 500 is configured to have a notch 501 on a side surface thereof facing away from the wall surfaces, the air outlet 202 is configured at a position corresponding to a side surface of the housing 200, and meanwhile, the height of the notch 501 is slightly higher than the height of the air outlet 202, and the width of the notch 501 is slightly larger than the width of the air outlet 202, so that the laminar flow wind generated by the laminar flow fan 300 is acted by the wind shielding member 500, and only the laminar flow wind blows out of the air purifier 100 from the notch 501 through the air outlet 202 located at the front end thereof. In one embodiment, the wind screen 500 has a substantially square cross-section and a cavity at the center for receiving the laminar flow fan 300, and a notch 501 is formed at one or more sides thereof to meet the user's requirements for different shapes of the housing 200, different installation locations, and different air supply requirements of the air purifier 100.
In some embodiments, laminar flow fan 300 further comprises: drive disk 305 and link 306. The driver disks 305 are arranged in parallel with a plurality of annular disks 301 at a spacing. A connector 306 extends through the drive disk 305 and the plurality of ring disks 301 to connect the plurality of ring disks 301 to the drive disk 305. The motor 400 is configured to directly drive the drive disk 305 to rotate, and the drive disk 305 rotates the plurality of annular disks 301.
In some embodiments, the driving disk 305 of the laminar flow fan 300 is formed at the center thereof with a recess 351 toward the plurality of ring disks 301, and the motor 400 is fixedly disposed in the recess 351. Fig. 13 is a schematic perspective view of the laminar flow fan 300. Fig. 16 is a schematic cross-sectional view of the laminar flow fan 300 shown in fig. 13. Fig. 17 is a schematic perspective view of another view angle of the laminar flow fan 300 shown in fig. 13. Fig. 18 is a schematic perspective view of still another view angle of the laminar flow fan 300 shown in fig. 13. The air purifier 100 of the embodiment of the present invention may further include: and a fixing mechanism 401 disposed in the housing 200 for fixing the motor 400. Fig. 19 is a schematic cross-sectional view of the engagement of the fixing mechanism 401, the motor 400, and the laminar flow fan 300. Fig. 20 is a schematic exploded view of the motor 400 and the fixing mechanism 401. The fixing mechanism 401 includes a fixing plate 411 and a fixing frame 412, and the motor 400 is disposed between the fixing plate 411 and the fixing frame 412. The fixing frame 412 has a main body 421 and a claw 422 extending from the main body 421 toward the fixing plate 411. The body 421 has a through hole 423, and an output shaft of the motor 400 extends out of the fixing frame 412 from the through hole 423 and is connected to the laminar flow fan 300. The claw 422 is fixed to the fixing plate 411 and is disposed to match the recess 351. A connection hole 352 is formed at the center of the recess 351, and an output shaft of the motor 400 is inserted into the connection hole 352 and fixed to the driving disk 305. The fixing plate 411 is provided with a plate attachment hole 414, the claw portion 422 is provided with a claw attachment hole 424, and the claw portion 422 and the fixing plate 411 are fixed by using a bolt or the like. Fig. 12 is a schematic perspective view of a fixing plate 411 of the air cleaner 100 according to an embodiment of the present invention, and a reinforcing rib 415 is further provided on the fixing plate 411.
In other embodiments, the drive disk 305 of the laminar flow fan 300 has a flat surface, and the motor 400 is fixedly disposed on the flat surface of the drive disk 305. Fig. 21 is a schematic front view of a laminar flow fan 110 with a drive disk 305 having a flat surface. Fig. 22 is a schematic perspective view of another perspective view of the laminar flow fan 110 shown in fig. 21. In a preferred embodiment, the lower surface of the driving disk 305 is further provided with an inverted conical protrusion 353, and the inverted conical protrusion 353 can effectively guide the air entering the laminar flow fan 300 through the air inlet channel 302 into the gap between the disks, thereby improving the efficiency of forming laminar air.
Fig. 23 is a schematic view showing air circulation of the laminar flow fan 110 shown in fig. 21, in which air inlet passages 302 are formed at the centers of a plurality of annular disks 301 to allow air outside the laminar flow fan 300 to enter; a plurality of discharge ports 303 are formed in gaps between the plurality of annular disks 301 to blow out laminar air.
The connection 306 of the laminar flow fan 300 may be a blade 361, a connection rod 362, or the like.
Fig. 24 is a schematic cross-sectional view of the laminar flow fan 110 shown in fig. 21. In this embodiment, the connecting member 306 is a blade 361, and the cross section of the blade 361 has two curves sequentially arranged along the rotation direction of the annular disc 301, and the length of the chord 373 of the two curves has a linear relationship with the air volume of the laminar flow fan 110, so that the air volume of the laminar flow fan 110 can be greatly increased by increasing the length of the chord 373, and the laminar flow air circulation is promoted. It should be noted that the two curves may be arcs, non-arcs, straight lines, and the like, and the straight line may be a special curve. The length of the chord line 373 may be the distance between the two ends of the two curves, when the distance between the two ends of the two curves is the same. When the distances between the two end points of the two curves are different, if the two ends of the two curves are not intersected, the length of the chord line 373 may be the length of the connecting line of the middle points of the curves of the cross section of the blade 361 except the two curves; if only one end of the two curves intersects, the length of the chord line 373 may be the length of the line connecting the midpoint of the cross-section of the vane 361 except for the two curves and the end point of the intersection of the two curves.
In a preferred embodiment, the vanes 361 are plural and are evenly spaced throughout the drive disk 305 and the plurality of annular disks 301. The blades 361 uniformly penetrate through the driving disk 305 and the annular disks 301 at intervals, so that the driving disk 305 and the annular disks 301 can be stably connected, and further, when the motor 400 drives the driving disk 305 to rotate, the driving disk 305 can stably drive the annular disks 301 to rotate, and the working reliability of the laminar flow fan 110 is improved.
Fig. 25 is a schematic diagram showing the relationship between the length of the chord 373 and the wind pressure of the laminar flow fan 110 shown in fig. 21 when the outer diameter, the inner diameter, the number of layers, the pitch, the thickness, the installation angle of the blades 361, and the rotation speed of the motor 400 are all kept constant, wherein the abscissa axis refers to the length of the chord 373 of the blades 361, and the wind pressure refers to the pressure difference between the outlet 303 and the inlet of the air inlet channel 302. Note that the outer diameter of the annular disk 301 is the radius of its outer circumference, and the inner diameter is the radius of its inner circumference. The air boundary layer 304 rotates from inside to outside to form laminar wind, which moves centrifugally and thus leaves the outlet 303 at a higher velocity than the air entering the air inlet channel 302. The pressure difference between the outlet 303 and the inlet of the air intake channel 302 is the wind pressure, and the length of the chord 373 is in linear relation with the wind pressure. The wind pressure of the laminar flow fan 110 can be greatly improved by increasing the length of the chord 373, and the comprehensive performance of the laminar flow fan 110 is effectively guaranteed.
Given the limited space inherent in the air purifier 100, there is a constraint on the overall footprint of the laminar flow fan 110. Specifically, considering that the thickness of the laminar flow fan 110 is not too large, the number of the annular disks 301, the distance between two adjacent annular disks 301, and the thickness of the annular disks 301 may be correspondingly constrained; the outer diameter of the annular disk 301 may be correspondingly constrained in view of the lateral footprint of the laminar flow fan 110 not being too large. For example, the outer diameter of each annular disc 301 may be set to 170mm to 180mm, and the inner diameter of each annular disc 301 is set to 110mm to 120mm, so that the air volume may be effectively increased, and the air outlet of the laminar flow fan 110 is ensured to meet the use requirements of users. When the outer diameter and the inner diameter of the annular disk 301 are constant, the longer the chord 373 is, the greater the air volume and the wind pressure of the laminar flow fan 110 are, but the length of the chord 373 is also restricted to a certain extent, so as to avoid the blade 361 from excessively penetrating the annular disk 301, which leads to the reduction of the stability of the laminar flow fan 110. In summary, the length of the chord 373 can be set to the maximum range that can be achieved, so that the wind volume and the wind pressure of the laminar flow fan 110 can meet the use requirements of users. In a preferred embodiment, the annular disk 301 has an outer diameter of 175mm, an inner diameter of 115mm, 8 layers, a pitch of 13.75mm, a thickness of 2mm, and a setting angle of the blades 361The degree is 25.5 degrees, the rotation speed of the motor 400 is 1000rpm, and it can be found that after the length of the chord 373 is increased, the wind volume and the wind pressure are both greatly improved and are basically linear. The length of the chord 373 is set to a maximum range of 40mm to 42mm that can be achieved while ensuring the stability of the laminar flow fan 110. Moreover, when the length of the chord 373 is set to 42mm, the air volume of the laminar flow fan 110 can reach 1741m3And h, the wind pressure can reach 118.9Pa, and the use requirements of users can be completely met.
In some embodiments, the blade 361 may be a double arc blade 310, the cross section of which has a double arc convex toward the direction of rotation of the annular disk 301, and includes an inner arc 371 and a back arc 372 arranged in sequence along the direction of rotation of the annular disk 301, and the inner arc 371 and the back arc 372 have the same center and are arranged in parallel.
Fig. 26 is a schematic cross-sectional view of a laminar flow fan 110 having a double-arc blade 310. In a preferred embodiment, the outer diameter of each annular disc 301 is 170mm to 180mm, the inner diameter of each annular disc 301 is 110mm to 120mm, the difference between the outer diameter and the inner diameter of each annular disc 301 is about 60mm, the distance between the two ends of the inner arc 371 and the distance between the two ends of the back arc 372 are the same, the length of the chord line 373 is the distance between the two ends of the inner arc 371 or the back arc 372 and is set to 40mm to 42mm, so that the two ends of the inner arc 371 and the back arc 372 are respectively 10mm away from the inner circumference and the outer circumference of the annular disc 301, and the length of the chord line 373 is set to the maximum range which can be reached under the premise of ensuring the stability of the laminar flow fan 110, so that the air volume and the air pressure of the laminar flow fan 110 can meet the use requirements of users.
Fig. 27 is a schematic diagram showing the relationship between the installation angle α of the double-arc blade 310 and the air volume and the wind pressure when the outer diameter, the inner diameter, the number of layers, the pitch, the thickness, the chord length of the double-arc blade 310 and the rotation speed of the motor 400 are all kept constant, and the abscissa axis refers to the installation angle of the double-arc blade 310, that is, an included angle formed by a chord line 373 between two end points of an inner arc 371 and a connecting line 374 passing through the midpoint of the chord line 373 and the central axis of the annular disk 301 on the same cross section of the double-arc blade 310 and the annular disk 301.
In other embodiments, the blade 361 may be an aviation blade 320, the cross section of which has a double arc convex toward the direction of rotation of the annular disk 301, and the double arc includes an inner arc 371 and a back arc 372 arranged in sequence along the direction of rotation of the annular disk 301, and the inner arc 371 and the back arc 372 have different centers and both ends intersect. Fig. 28 is a cross-sectional schematic view of a laminar flow fan 110 having aero blades 320.
Fig. 29 is a schematic diagram of the relationship between the installation angle α of the aviation blade 320 and the air volume and the air pressure when the outer diameter, the inner diameter, the number of layers, the pitch, the thickness, the chord length of the aviation blade 320 and the rotation speed of the motor 400 of the laminar flow fan 110 shown in fig. 28 are all kept unchanged, and the abscissa axis refers to the installation angle of the aviation blade 320, that is, the included angle formed by the chord 373 between the middle points of the inner arc 371 or the back arc 372 and the connecting line 374 passing through the middle point of the chord 373 and the central axis of the annular disk 301 on the same cross section of the aviation blade 320 and the annular disk 301.
The annular disk 301 of the laminar flow fan 300 may also be arranged according to one or more of the following configurations: the distance between two adjacent annular disks 301 is gradually increased along the flowing direction of air in the air inlet channel 302; the inner diameters of the plurality of annular disks 301 are gradually reduced along the flowing direction of the airflow in the air inlet channel 302; each annular disc 301 is an arc-shaped disc that gradually approaches the drive disc 305 from the inside to the outside.
In some embodiments, the plurality of annular disks 301 of the laminar flow fan 300 are arranged in parallel at intervals with the same central axis, and the interval between two adjacent annular disks 301 is gradually increased along the direction in which air flows in the air intake passage 302. Fig. 30 is a schematic front view of the laminar flow fan 110 in which the pitch of the annular disks 301 is gradually changed. The inventor finds that, through multiple experiments, as the distance between two adjacent annular disks 301 gradually increases along the flowing direction of air in the air inlet channel 302, the air volume of the laminar flow fan 110 can be effectively increased, so that the air outlet of the laminar flow fan 110 meets the use requirement of a user.
Taking the laminar flow fan 110 disposed at the upper portion in the housing 200 as an example, fig. 32 is a schematic diagram illustrating a relationship between gradual change of the pitch of the plurality of ring disks 301 and the air volume and the air pressure when the outer diameter, the inner diameter, the number, the thickness, and the rotation speed of the motor 400 of the laminar flow fan 110 shown in fig. 30 are all kept unchanged, wherein the abscissa axis refers to a change amount of the pitch between two adjacent ring disks 301 along the direction from bottom to top. As shown in fig. 32, when all the above mentioned parameters are kept unchanged, the distance between every two adjacent annular disks 301 in the plurality of annular disks 301 gradually changes from bottom to top, which has a large influence on the air volume and a small influence on the air pressure; when the variation of the distance between two adjacent annular disks 301 along the direction from bottom to top, which is represented by the abscissa axis, is a positive number, it is described that the distance between every two adjacent annular disks 301 in the plurality of annular disks 301 gradually increases from bottom to top; when the variation of the spacing between two adjacent annular disks 301 along the direction from bottom to top, which is represented by the abscissa axis, is a negative number, it indicates that the spacing between every two adjacent annular disks 301 in the plurality of annular disks 301 gradually decreases from bottom to top. Therefore, as can be seen from fig. 32, when the variation amount of the pitch between every two adjacent annular disks 301 of the plurality of annular disks 301 is-1 mm, 1mm and 2mm, the air volume and the air pressure of the laminar flow fan 110 are greatly improved.
As mentioned above, the connecting member 306 of the laminar flow fan 300 in the embodiment of the present invention may be a connecting rod 362. Fig. 31 is a schematic perspective view of the laminar flow fan 110 shown in fig. 30. The connecting rods 362 may be a plurality of rods, and are uniformly spaced throughout the edge portions of the drive disk 305 and the plurality of annular disks 301. The connecting rods 362 uniformly penetrate through the edge portions of the driving disk 305 and the annular disks 301 at intervals, so that the connection relationship between the driving disk 305 and the annular disks 301 can be ensured to be stable, and further, when the motor 400 drives the driving disk 305 to rotate, the driving disk 305 can stably drive the annular disks 301 to rotate, and the working reliability of the laminar flow fan 110 is improved. Meanwhile, when the connecting member 306 is the connecting rod 362, the rotation speed of the motor 400 is approximately linear with the air volume of the laminar flow fan 110, so that in a preferred embodiment, the motor 400 can be further configured to: the rotating speed of the motor 400 is determined according to the obtained target air volume of the laminar flow fan 110. That is, the target air volume of the laminar flow fan 110 may be obtained first, and then the rotation speed of the motor 400 may be determined according to a linear relationship between the target air volume and the rotation speed of the motor 400. The target air volume may be obtained by an input operation of the user. In a preferred embodiment, the outer diameter of the annular disc 301 is 175mm, the inner diameter is 115mm, the number of layers is 8, and the distance between two adjacent annular discs 301 is sequentially set from bottom to top: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm, 19.75mm, when the thickness is 2mm, the linear relation between the rotating speed of the motor 400 and the air volume of the laminar flow fan 110 is more obvious.
In some embodiments, the inner diameters of the plurality of annular disks 301 of the laminar flow fan 300 of the embodiment of the present invention are gradually reduced along the direction of the airflow flowing in the air intake channel 302. Taking the laminar flow fan 300 disposed at the upper portion in the housing 200 as an example, fig. 33 is a schematic cross-sectional view of the laminar flow fan 300 in which the inner diameter of the annular disk 301 is gradually changed. Fig. 34 is a schematic diagram showing the relationship between the gradual change of the inner diameter of a plurality of ring disks 301 and the air volume and the air pressure when the outer diameter, the pitch, the number, the thickness and the rotation speed of the motor 400 of the laminar flow fan 110 having the laminar flow fan 300 shown in fig. 33 are all kept constant, wherein the abscissa axis refers to the change amount of the inner diameter of each ring disk 301 and the inner diameter of the ring disk 301 adjacent below. As shown in fig. 34, when all the above mentioned parameters are kept unchanged, the inner diameters of the plurality of annular disks 301 gradually change from bottom to top, which has a large influence on the air volume and a small influence on the air pressure. When the variation of the inner diameter of each annular disc 301 represented by the abscissa axis and the inner diameter of the adjacent annular disc 301 below is a positive number, it indicates that the inner diameters of the plurality of annular discs 301 gradually increase from bottom to top; when the variation of the inner diameter of each annular disc 301 and the inner diameter of the adjacent annular disc 301 below is negative, the inner diameters of the annular discs 301 gradually decrease from bottom to top. As shown in fig. 34, when the inner diameters of the plurality of annular disks 301 gradually decrease from bottom to top, the air volume increases and the air pressure decreases slightly; when the inner diameters of the plurality of annular disks 301 gradually increase from bottom to top, the wind pressure slightly increases, and the wind volume greatly decreases. In a preferred embodiment, the outer diameter of the annular disc 301 is 175mm, the maximum inner diameter of the annular disc 301 is 115mm, the distance is 13.75mm, the number is 8, the thickness is 2mm, the rotation speed of the motor 400 is 1000rpm, and then, considering the overall consideration of the air volume and the air pressure, the variation between the inner diameter of each annular disc 301 and the inner diameter of the adjacent annular disc 301 below may be set to-5 mm, that is, the inner diameters of the 8 annular discs 301 are respectively: 115mm, 110mm, 105mm, 100mm, 95mm, 90mm, 85mm, 80 mm.
In some embodiments, the annular disc 301 of the laminar flow fan 300 is an arcuate disc that gradually approaches the drive disc 305 from the inside to the outside. Taking the laminar flow fan 300 arranged at the upper part in the casing 200 as an example, each annular disc 301 is set to be an arc-shaped disc which gradually rises from inside to outside and protrudes upwards, so that the angle of the external air entering the laminar flow fan 300 is more consistent with the flow of the fluid, the external air entering the laminar flow fan 300 is more facilitated, the air volume loss is effectively reduced, and the air outlet of the laminar flow fan 110 is ensured to meet the use requirements of users. Fig. 35 is a schematic view of the central angle θ of the inner and outer diameter connecting lines of the plurality of annular disks 301 on the same longitudinal section passing through the central axis. Fig. 36 is a schematic diagram showing the relationship between the central angle θ and the air volume and the air pressure when the outer diameter, the number of layers, the pitch, the thickness of the annular disk 301 and the rotation speed of the motor 400 are all kept constant. As shown in fig. 36, when each of the above-mentioned parameters is kept constant, as the central angle θ is gradually increased, the air volume is increased and then decreased, and the air pressure is slightly increased. In a preferred embodiment, the annular disks 301 have an outer diameter of 175mm, a number of 10 layers, a pitch of 13.75mm, a thickness of 2mm, and a rotation speed of the motor 400 of 1000rpm, and the central angle θ may be set to 9 ° to 30 ° in consideration of the air volume and the wind pressure. And as shown in fig. 36, when the central angle θ is set to 15 °, the air volume of the laminar flow fan 110 reaches the maximum value.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (12)
1. An air purifier, comprising:
the shell is provided with an indoor air inlet and an indoor air outlet;
the filter element is arranged in the shell, and indoor air enters the shell from the indoor air inlet and then reaches the filter element for filtering;
the fresh air system is connected with the shell and is provided with an outdoor air inlet, and outdoor air enters the shell through the outdoor air inlet; and
laminar flow fan, set up in the casing, it is formed with inlet channel, warp after the filter core filters indoor air and/or entering the casing outdoor air reachs inlet channel, laminar flow fan arrives through fluid viscosity effect disturbance inlet channel's air forms laminar flow wind, laminar flow wind certainly the air outlet is discharged the casing.
2. The air purifier of claim 1,
the new trend system includes:
the first end of the fresh air pipeline is positioned outdoors, the outdoor air inlet is arranged, and the second end of the fresh air pipeline extends into the shell; and
and the outdoor air enters the fresh air pipeline through the outdoor air inlet and is driven by the centrifugal fan to move to enter the shell.
3. The air purifier of claim 2,
the new trend system still includes:
a volute having an inlet and an outlet;
the centrifugal fan is arranged in the volute and drives the outdoor air to enter the volute from the inlet and turn in the volute to enter the shell from the outlet.
4. The air purifier of claim 3,
the new trend system still includes:
the fresh air filter element is arranged in the fresh air pipeline, the centrifugal fan drives the fresh air filter element to filter the outdoor air, and the outdoor air enters the volute from the inlet.
5. The air purifier of claim 3,
an air duct plate is arranged in the shell and is configured to form an air duct with at least one part of the filter element;
the outlet of the volute is communicated with the air duct, so that the outdoor air is discharged from the outlet, enters the air duct, is filtered by the filter element and then reaches the air inlet channel.
6. The air purifier of claim 3,
the laminar flow fan includes:
the laminar flow fan comprises a plurality of annular discs, the annular discs are arranged in parallel at intervals, have the same central axis and have centers which jointly form the air inlet channel, and air entering the air inlet channel reaches gaps among the annular discs; and
and the motor is connected with the laminar flow fan and is configured to drive the plurality of annular discs to rotate, so that the air boundary layer close to the surfaces of the plurality of annular discs is driven by the plurality of rotating annular discs to rotate and move from inside to outside to form the laminar flow wind.
7. The air purifier of claim 6,
the laminar flow fan and the motor are arranged at the upper part in the shell;
the shell is provided with the air outlet at the position of the upper part of the shell corresponding to the laminar flow fan;
the filter element is an annular filter element and is vertically arranged below the laminar flow fan;
the casing is in the below of filter core is formed with and holds the chamber, centrifugal fan with the spiral case set up in hold the intracavity, just the spiral case the opening of export upwards.
8. The air purifier of claim 6, further comprising:
the wind shielding piece is arranged outside the laminar flow fan, is positioned between the shell and the laminar flow fan and is provided with a gap;
the shell is arranged at the position, corresponding to the notch, of the air outlet, and laminar flow air sequentially passes through the notch and flows out of the shell through the air outlet.
9. The air purifier of claim 6,
the laminar flow fan further includes:
a driving disk arranged in parallel with the plurality of annular disks at intervals; and
a connector extending through the drive disk and the plurality of annular disks to connect the plurality of annular disks to the drive disk;
the motor is configured to directly drive the drive disk to rotate, and the drive disk drives the plurality of annular disks to rotate.
10. The air purifier of claim 9,
the driving disk is formed with a recess at its center toward the plurality of annular disks;
the air purifier further includes:
the fixing mechanism is arranged in the shell and comprises a fixing plate and a fixing frame, and the motor is arranged between the fixing plate and the fixing frame; wherein
The fixing frame is provided with a body part and a clamping claw part extending from the body part to the fixing plate;
the body part is provided with a through hole, and an output shaft of the motor extends out of the fixing frame from the through hole and then is connected with the laminar flow fan;
the clamping claw part is used for being fixed with the fixing plate and is matched with the concave part.
11. The air purifier of claim 9,
the connecting piece is a blade, the cross section of the blade is provided with a double-arc protruding towards the rotating direction of the annular disk, and the double-arc comprises an inner arc and a back arc which are sequentially arranged along the rotating direction of the annular disk; wherein,
the inner arc and the back arc have different circle centers and the two ends are intersected, or
The inner arc and the back arc have the same circle center and are arranged in parallel.
12. The air purifier of claim 9,
the annular disc is arranged according to one or more of the following structures:
the distance between two adjacent annular disks is gradually increased along the flowing direction of the airflow in the air inlet channel;
the inner diameters of the annular disks are gradually reduced along the flowing direction of the airflow in the air inlet channel;
each annular disc is an arc disc which is gradually close to the driving disc from the inner side to the outer side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910045854.4A CN111437670B (en) | 2019-01-17 | 2019-01-17 | Air purifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910045854.4A CN111437670B (en) | 2019-01-17 | 2019-01-17 | Air purifier |
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| CN111437670A true CN111437670A (en) | 2020-07-24 |
| CN111437670B CN111437670B (en) | 2023-05-23 |
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Effective date of registration: 20230509 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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