CN111437669B - Air Purifier - Google Patents
Air Purifier Download PDFInfo
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- CN111437669B CN111437669B CN201910045474.0A CN201910045474A CN111437669B CN 111437669 B CN111437669 B CN 111437669B CN 201910045474 A CN201910045474 A CN 201910045474A CN 111437669 B CN111437669 B CN 111437669B
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- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 210000000078 claw Anatomy 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000013459 approach Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 13
- 239000011295 pitch Substances 0.000 description 13
- 238000009434 installation Methods 0.000 description 12
- 230000008859 change Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 238000000418 atomic force spectrum Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
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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
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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
- B01D46/42—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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Abstract
本发明提供了一种空气净化器，包括：壳体，其上设置有进风口和出风口；环形滤芯，设置于所述壳体内，外部空气自所述进风口进入所述壳体后到达所述环形滤芯进行过滤；层流风机，设置于所述壳体内，其形成有进风通道，所述层流风机通过流体粘性效应扰动经所述环形滤芯过滤后进入所述进风通道的空气形成层流风，所述层流风自所述出风口排出所述壳体。本发明的空气净化器送风过程噪音小、风量高、风压大。
The present invention provides an air purifier, comprising: a housing, on which an air inlet and an air outlet are arranged; an annular filter element, arranged in the housing, external air enters the housing from the air inlet and reaches the annular filter element for filtration; a laminar flow fan, arranged in the housing, which forms an air inlet channel, the laminar flow fan disturbs the air entering the air inlet channel after being filtered by the annular filter element through the fluid viscosity effect to form laminar wind, and the laminar wind is discharged from the housing from the air outlet. The air purifier of the present invention has low noise, high air volume and high wind pressure during the air supply process.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to an air purifier.
Background
In order to freshen air, an air purifier is required to purify the air. At present, an air purifier mainly uses a centrifugal fan or an axial flow fan to supply air in one direction, blades periodically impact the passing air flow to generate obvious rotating noise, the air supply noise is high, and the noise value is close to the limit under the limit of performance indexes. In addition, the centrifugal fan needs the volute to be matched to realize the air supply effect, and the volute tongue can also impact air flow to generate strong turbulence noise. In addition, most users consider that clean air generated by the existing air purifier cannot be uniformly distributed in a room or a closed space, and has certain distribution limitation.
Disclosure of Invention
An object of the present invention is to provide an air cleaner with low noise, high wind volume and high wind pressure.
The invention further aims to prevent the air purifier from directly blowing out air to users, and improve the use experience of the users.
It is a further object of the present invention to provide an air purifier that achieves 360 ° air supply.
It is still a further object of the present invention to expand the range of the vertical direction air supply of the air cleaner to achieve global purification.
The invention provides the following technical scheme:
an air purifier, comprising:
The shell is provided with an air inlet and an air outlet;
The annular filter element is arranged in the shell, and external air enters the shell from the air inlet and then reaches the annular filter element for filtering; and
The laminar flow fan is arranged in the shell, an air inlet channel is formed in the center of the laminar flow fan, air entering the air inlet channel after being filtered by the annular filter element is disturbed by the 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 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 form an air inlet channel together at the center, and air filtered by the annular filter element enters the air inlet channel to reach gaps among the plurality of 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 annular discs to rotate to form laminar flow wind by rotating from inside to outside.
Optionally, a laminar flow fan and a motor are arranged at the upper part in the shell, and an air outlet is arranged at the upper part of the shell at a position corresponding to the laminar flow fan; the annular filter core is vertically arranged below the laminar flow fan.
Optionally, the housing is provided with an air outlet at its upper part surrounding the laminar flow fan.
Optionally, the upper part and the lower part in the shell are respectively provided with a laminar flow fan and a motor, and the upper part and the lower part of the shell are respectively provided with air outlets at positions corresponding to the two laminar flow fans; the annular filter element is vertically arranged between the two laminar flow fans, and the shell body is provided with an air inlet around the annular filter element at the middle part of the shell body.
Optionally, the laminar flow fan further comprises: 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 notch; the shell is provided with an air outlet at the position corresponding to the notch, and laminar air flows out of the shell through the notch and the air outlet in sequence.
Optionally, the laminar flow fan further comprises: a driving disc arranged in parallel with the plurality of annular discs at intervals; and a connection member penetrating the driving disk and the plurality of annular disks to connect the plurality of annular disks to the driving 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 driving disc is formed with a recess at its center toward the plurality of annular discs; the motor is fixedly arranged in the concave part; 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; the fixing frame is provided with a body part and a claw part extending from the body part towards 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 is connected with the laminar flow fan; the claw portion is used for being fixed with the fixed plate, and matches the setting with the depressed part.
Optionally, the upper surface of the driving disc is a plane, and the lower surface of the driving disc is provided with an inverted conical bulge; the motor is fixedly arranged on the plane of the driving disc.
Optionally, the connecting piece is a blade, the cross section of the connecting piece is provided with two sections of curves which are sequentially arranged along the rotating direction of the annular disc, and the chord length of the two sections of curves is in linear relation with the air quantity of the laminar flow fan. Further, the cross section of the blade is provided with a double arc protruding towards the rotating direction of the annular disc, and the double arc comprises an inner arc and a back arc which are sequentially arranged along the rotating direction of the annular disc; the inner arc and the back arc have different circle centers and both ends 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 several of the following structures:
the distance between two adjacent annular disks is gradually increased along the flowing direction of the air flow in the air inlet channel;
the inner diameters of the plurality of annular discs gradually decrease along the flowing direction of the air flow in the air inlet channel;
each annular disc is an arc disc which gradually approaches the driving disc from the inner side to the outer side.
According to the air purifier, the annular filter element and the laminar flow fan are arranged in the shell, and the laminar flow fan is used for disturbing air filtered by the annular filter element through the fluid viscosity effect to realize laminar flow air supply, so that noise is low, air quantity is high, air pressure is high in the air supply process, and the use experience of users of the air purifier is effectively improved.
Further, the air purifier provided by the invention has the advantages that the laminar flow fan and the air outlet are arranged at the upper part, the annular filter element is arranged below the laminar flow fan, so that air supply from the upper part is realized, the air outlet is prevented from directly blowing users, the use experience of the users is improved, and 360-degree uniform air supply can be realized under the preferable condition.
Furthermore, the air purifier can be provided with the laminar flow fans at the upper part and the lower part respectively, and the annular filter element is arranged between the two groups of laminar flow fans, so that the air supply range of the air purifier in the vertical direction is enlarged, and the overall purification is realized.
Furthermore, the air purifier is based on the annular filter element, and air inlets can be formed in the periphery of the shell, so that 360-degree air inlet is realized.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
Fig. 1 is a schematic perspective view of an air cleaner according to an embodiment of the present invention.
Fig. 2 is a schematic exploded view of the air cleaner shown in fig. 1.
Fig. 3 is a schematic exploded view of an air cleaner according to another embodiment of the present invention.
Fig. 4 is a schematic exploded view of an air cleaner according to still another embodiment of the present invention.
Fig. 5 is a schematic perspective view of a laminar flow fan of an air cleaner according to one embodiment of the present invention.
Fig. 6 is a schematic diagram of the air supply principle of the laminar flow fan of the air purifier shown in fig. 1.
FIG. 7 is a velocity profile and force profile of a laminar flow fan of the air purifier shown in FIG. 1.
Fig. 8 is a schematic cross-sectional view of the laminar flow fan shown in fig. 5.
Fig. 9 is a schematic perspective view of another view of the laminar flow fan shown in fig. 5.
Fig. 10 is a schematic perspective view of yet another view of the laminar flow fan shown in fig. 5.
Fig. 11 is a schematic cross-sectional view of the attachment mechanism, motor and laminar flow fan of an air purifier according to one embodiment of the present invention.
Fig. 12 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. 13 is a schematic front view of a laminar flow fan of an air purifier according to one embodiment of the present invention.
Fig. 14 is a schematic perspective view of the laminar flow fan shown in fig. 13 from another perspective.
Fig. 15 is a schematic view of the air circulation of the laminar flow fan shown in fig. 13.
Fig. 16 is a schematic cross-sectional view of the laminar flow fan shown in fig. 13.
Fig. 17 is a schematic diagram showing the relationship between the chord length of the blade of the laminar flow fan and the air volume and the air pressure of the laminar flow fan shown in fig. 13.
Fig. 18 is a schematic cross-sectional view of a laminar flow fan having bi-circular arc vanes of the laminar flow fan of an air purifier according to one embodiment of the present invention.
Fig. 19 is a schematic diagram showing the relationship between the installation angle of the double circular arc blade and the wind volume and wind pressure.
FIG. 20 is a schematic cross-sectional view of a laminar flow fan having aero blades of the laminar flow fan of an air purifier according to one embodiment of the present invention.
Fig. 21 is a schematic view of the relationship between the installation angle of the aviation blade and the wind volume and wind pressure.
Fig. 22 is a schematic front view of a laminar flow fan in which the annular disc pitch of the laminar flow fan of the air cleaner is gradually changed according to an embodiment of the present invention.
Fig. 23 is a schematic perspective view of the laminar flow fan shown in fig. 22.
FIG. 24 is a graphical illustration of the progression of annular disk spacing versus air volume and air pressure for the laminar flow fan of FIG. 22.
Fig. 25 is a schematic cross-sectional view of a laminar flow fan having a gradual inner diameter of an annular disc of the laminar flow fan of the air cleaner according to an embodiment of the present invention.
FIG. 26 is a graph showing the relationship between the inner diameter gradient of the plurality of annular disks of the laminar flow fan shown in FIG. 25 and the air volume and air pressure.
Fig. 27 is a schematic view showing a central angle of an inner and outer diameter line of a plurality of annular disks of a laminar fan in which the annular disks of the laminar fan of the air cleaner are arc-shaped disks on the same longitudinal section passing through the central axis according to an embodiment of the present invention.
Fig. 28 is a schematic diagram of the relationship between the central angle of the laminar flow fan shown in fig. 27 and the air volume and air pressure.
Detailed Description
Fig. 1 is a schematic perspective view of an air cleaner 100 according to one embodiment of the present invention. Fig. 2 is a schematic exploded view of the air cleaner 100 shown in fig. 1. The air purifier 100 of an embodiment of the present invention may generally include a housing 200, an annular filter element 600, and a laminar flow fan 110. The housing 200 is provided with an air inlet 201 and an air outlet 202. The annular filter element 600 is disposed in the housing 200, and external air enters the housing 200 from the air inlet 201 and reaches the annular filter element 600 for filtering. The laminar flow fan 110 is disposed in the housing 200, an air inlet channel 302 is formed in the center of the laminar flow fan 110, air entering the air inlet channel 302 after being filtered by the annular filter element 600 is disturbed by 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 annular filter element 600 and the laminar flow fan 110 are arranged in the shell 200, and the laminar flow fan 110 is utilized to disturb the air filtered by the annular filter element 600 through the fluid viscosity effect to realize laminar flow air supply, so that the noise is low, the air quantity is high, the air pressure is high in the air supply process, the use experience of a user of the air purifier 100 is effectively improved, and the air purifier 100 is novel in appearance, good in function and excellent in quality.
In some embodiments, the laminar flow fan 110 includes a laminar flow fan 300 and a motor 400. Fig. 5 is a schematic perspective view of a laminar flow fan 300. The laminar flow fan 300 includes a plurality of annular disks 301, the plurality of annular disks 301 being disposed in parallel with each other with the same central axis and the centers collectively forming an air intake passage 302, and air filtered through the annular filter cartridge 600 enters the air intake passage 302 to reach gaps between the plurality of annular disks 301. The motor 400 is connected to the laminar fan 300 and configured to drive the plurality of annular disks 301 to rotate, so that the plurality of annular disks 301, which are rotating, drive the air boundary layer 304 adjacent to the surfaces of the plurality of annular disks 301 to rotate from inside to outside to form laminar wind. Wherein the air boundary layer 304 is a very thin layer of air adjacent to the surface of each disk.
Fig. 6 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 surface of each annular disk 301 is driven by the rotating annular disk 301 to rotate from inside to outside to form laminar air due to the action of the viscous shearing force tau. FIG. 7 is a velocity profile and force profile of the laminar flow fan 110 of the air purifier 100 of an embodiment of the present invention, which is a schematic diagram of the viscous shear force profile τ (y) and velocity profile u (y) experienced by the air boundary layer 304. The viscous shear force experienced by the air boundary layer 304 is actually the drag that each disk creates on the air boundary layer 304. The axis of abscissa in fig. 7 refers to the distance in the moving direction of the air boundary layer 304, and the axis of ordinate refers to the height of the air boundary layer 304 in the direction perpendicular to the moving direction. v e is the air flow velocity at each point within the air boundary layer 304, δ is the thickness of the air boundary layer 304, τ w is the viscous shear at the surface of the annular disk 301. The variable y in τ (y) and u (y) refers to the height of the air boundary layer 304 in cross section in the direction perpendicular to the moving direction, and L is the distance between a certain point of the inner circumference of the annular disk 301 and a certain point of the surface of the annular disk 301. τ (y) is the viscous shear force distribution experienced at this distance L when the height of the air boundary layer 304 cross section is y; u (y) is the velocity profile at this distance L at which the height of the air boundary layer 304 cross-section is y.
The overall shape of the housing 200 of the air cleaner 100 according to the embodiment of the present invention may be designed according to practical needs, such as a cylinder, a rectangular parallelepiped, a square, and other abnormal shapes. In some embodiments, the housing 200 is a rectangular parallelepiped structure having four sides and upper and lower bottom surfaces. One or more of the four sides are selected to be provided with the air inlet 201, so that an air inlet side is formed. In one embodiment, air intakes 201 are provided on each of the four sides of the housing 200 to achieve 360 ° air intake.
The cross section of the annular filter element 600 is annular, and the center is a hollow channel. In order to move the air filtered by the annular filter cartridge 600 into the air intake passage 302 as much as possible, in some embodiments, the air cleaner 100 of the present embodiment further includes: the partition 101 is disposed between the laminar flow fan 300 and the annular filter element 600, and is used for limiting the direction of the air which reaches the central passage of the annular filter element 600 after being filtered, so as to prevent the air from flowing out from the gap between the annular filter element 600 and the laminar flow fan 300. The specific shape of the partition 101 may be designed in relation to the structure of the laminar flow fan 300, the annular cartridge 600, and the housing 200. For example, in one embodiment, the housing 200 is rectangular, the cross section of the partition 101 is also square, and the partition is formed with a circular hollow structure at its center, and the circular hollow structure has a hollow passage on one side and an air intake passage 302 on the other side.
As shown in fig. 2, in some embodiments, the air cleaner 100 of the embodiment of the present invention is provided with a laminar flow fan 300 and a motor 400 at an upper portion inside a housing 200, and 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 ring-shaped filter cartridge 600 is vertically disposed in the housing 200 to extend in the up-down direction below the laminar flow fan 300. The air purifier 100 of the embodiment of the invention can exhaust air from the upper part, avoid direct blowing to users and improve the use experience of the users. In a preferred embodiment, the housing 200 is provided with the air outlet 202 at the upper part surrounding the laminar flow fan 300 for a circle, so as to realize 360-degree uniform air supply, and further improve the use experience of users.
Fig. 3 is a schematic exploded view of an air cleaner 100 according to another embodiment of the present invention. The air cleaner 100 of the embodiment of the present invention further includes: the wind shielding member 500 is arranged outside the laminar flow fan 300 and between the housing 200 and the laminar flow fan 300, and is provided with a notch 501; the housing 200 is provided with the air outlet 202 at a position thereof corresponding to the notch 501, and laminar air flows out of the housing 200 through the notch 501 and the air outlet 202 in order. For example, when the installation position of the air cleaner 100 is a corner where two wall surfaces are perpendicular, the wind shielding member 500 is arranged to have the notch 501 at a side surface facing away from the wall surfaces, the air outlet 202 is arranged at a corresponding side surface position of the housing 200, and the height of the notch 501 is slightly higher than the height of the air outlet 202, and the width is slightly larger than the width of the air outlet 202, so that laminar air generated by the laminar flow fan 300 is blown out of the air cleaner 100 only from the notch 501 through the air outlet 202 at the front end thereof by the wind shielding member 500, and laminar air is not wasted. In one embodiment, the wind shield 500 is a generally square cross-section structure having a cavity in the center for receiving the laminar flow fan 300, and is provided with notches 501 on one or more sides thereof to accommodate the user's needs for the air purifier 100 with different shaped housings 200, different mounting locations, and different air supply needs.
Fig. 4 is a schematic exploded view of an air cleaner 100 according to still another embodiment of the present invention. The air purifier 100 of the embodiment of the invention is that a laminar flow fan 300 and a motor 400 are respectively arranged at the upper part and the lower part in a shell 200, and an air outlet 202 is respectively arranged at the upper part and the lower part of the shell 200 corresponding to the two laminar flow fans 300; the annular filter element 600 is vertically disposed in the housing 200 and between the two laminar flow fans 300, and the air inlet 201 is disposed at the middle of the housing 200 around the annular filter element 600, so that the air supply range of the air purifier 100 in the vertical direction can be enlarged, and the overall purification can be realized.
In some embodiments, laminar flow fan 300 further comprises: a drive disc 305 and a connector 306. The drive disk 305 is disposed in parallel with the plurality of annular disks 301 at intervals. A connector 306 extends through the drive disk 305 and the plurality of annular disks 301 to connect the plurality of annular 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 fan 300 is formed with a recess 351 toward the plurality of annular disks 301 at the center thereof, and the motor 400 is fixedly disposed in the recess 351. Fig. 5 is a schematic perspective view of a laminar flow fan 300. Fig. 8 is a schematic cross-sectional view of the laminar flow fan 300 shown in fig. 5. Fig. 9 is a schematic perspective view of another view of the laminar flow fan 300 shown in fig. 5. Fig. 10 is a schematic perspective view of yet another view of the laminar flow fan 300 shown in fig. 5. The air purifier 100 of the embodiment of the present invention may further include: the fixing mechanism 401 is disposed in the housing 200 and is used for fixing the motor 400. Fig. 11 is a schematic cross-sectional view of the cooperation of the securing mechanism 401, motor 400, and laminar flow fan 300. Fig. 12 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 body portion 421 and a claw portion 422 extending from the body portion 421 toward the fixing plate 411. The body 421 is provided with 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 clamping portion 422 is used for being fixed with the fixing plate 411 and is matched with the concave portion 351. A connection hole 352 is provided at the center of the recess 351, and an output shaft of the motor 400 is fixed to the driving disk 305 after being inserted into the connection hole 352. The fixing plate 411 is provided with a plate connection hole 414, and the claw portion 422 is provided with a claw connection hole 424, and the claw portion 422 and the fixing plate 411 are fixed by using a bolt or the like. In addition, the fixing plate 411 is provided with a reinforcing rib 415.
In other embodiments, the drive disk 305 of the laminar flow fan 300 has a planar surface and the motor 400 is fixedly disposed on the planar surface of the drive disk 305. Fig. 13 is a schematic front view of a laminar flow fan 110 with a planar drive disk 305. Fig. 14 is a schematic perspective view of the laminar flow fan 110 shown in fig. 13 from another perspective. In a preferred embodiment, the lower surface of the driving disk 305 is further provided with an inverted cone protrusion 353, and the inverted cone 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 flow air.
Fig. 15 is an air circulation schematic diagram of the laminar flow fan 110 shown in fig. 13, in which an air inlet channel 302 is formed in the center of a plurality of annular disks 301 so as to allow air outside the laminar flow fan 300 to enter; a plurality of discharge ports 303 are formed in the gaps between the plurality of annular disks 301 for laminar wind to blow out.
The connection 306 of the laminar flow fan 300 may be a vane 361, a connecting rod 362, or the like.
Fig. 16 is a schematic cross-sectional view of the laminar flow fan 110 shown in fig. 13. In this embodiment, the connecting piece 306 is a blade 361, the cross section of which has two sections of curves sequentially arranged along the rotation direction of the annular disc 301, and the lengths of the chord lines 373 of the two sections of curves are in 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 improved by increasing the lengths of the chord lines 373, thereby promoting laminar flow air circulation. 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 sections of curves are different, if the two ends of the two sections of curves are not intersected, the length of the chord line 373 may be the connecting line length of the cross section of the blade 361 at the middle points of the curves except for the two sections of curves; if only one end of the two curves intersect, the length of the chord 373 may be the length of the line connecting the midpoint of the cross section of the blade 361, excluding the two curves, with the end points of the intersection of the two curves.
In a preferred embodiment, the vanes 361 are a plurality and evenly spaced across the drive disk 305 and the plurality of annular disks 301. The plurality of blades 361 uniformly penetrate through the driving disc 305 and the plurality of annular discs 301 at intervals, so that the connection relationship between the driving disc 305 and the plurality of annular discs 301 can be ensured to be stable, and further, when the motor 400 drives the driving disc 305 to rotate, the driving disc 305 can stably drive the plurality of annular discs 301 to rotate, and the working reliability of the laminar flow fan 110 is improved.
Fig. 17 shows a schematic diagram of the relationship between the length of the chord line 373 and the air volume and the air pressure 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 of the laminar flow fan 110 shown in fig. 13 are all kept unchanged, wherein the axis of abscissa in the drawing refers to the length of the chord line 373 of the blades 361, and the air pressure refers to the pressure difference between the outlet 303 and the inlet of the air inlet channel 302. 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 process of moving the air boundary layer 304 from inside to outside to create laminar wind is centrifugal, and thus the velocity of the air exiting the discharge outlet 303 is greater than the velocity of the air entering the air intake channel 302. The pressure difference between the outlet 303 and the inlet of the air inlet channel 302 is wind pressure, and the length of the chord 373 is also in linear relation to the wind pressure. The length of the chord line 373 is increased to greatly improve the wind pressure of the laminar flow fan 110, so that the comprehensive performance of the laminar flow fan 110 is effectively ensured.
Given the limited space inherent in the air purifier 100, there is a need for 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 excessively large, the number of annular disks 301, the interval 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 excessive. For example, the outer diameter of each annular disc 301 can be 170mm to 180mm, and the inner diameter of each annular disc 301 is 110mm to 120mm, so that the air quantity can be effectively increased, and the air outlet of the laminar flow fan 110 can be 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 line 373 is, the larger the air volume and the air pressure of the laminar flow fan 110 are, but the length of the chord line 373 is also restricted to a certain extent, so that the blade 361 is prevented from penetrating through the annular disk 301 excessively, and the stability of the laminar flow fan 110 is prevented from being lowered. In summary, the length of the chord 373 may be set to the maximum range that can be reached, so that the air volume and wind pressure of the laminar flow fan 110 can meet the use requirements of the user. In a preferred embodiment, the annular disk 301 has an outer diameter of 175mm, an inner diameter of 115mm, a number of layers of 8, a pitch of 13.75mm, a thickness of 2mm, a blade 361 mounted at 25.5 ° and a rotational speed of the motor 400 of 1000rpm, and it has been found that after increasing the length of the chord 373, both the air volume and the air pressure are greatly increased and substantially linear. The length of the chord line 373 is set to a maximum achievable range of 40mm to 42mm while ensuring the stability of the laminar flow fan 110. And when the length of the string 373 is set to be 42mm, the air volume of the laminar flow fan 110 can reach 1741m 3/h, the air pressure can reach 118.9Pa, and the use requirement of a user can be completely met.
In some embodiments, the blade 361 may be a bi-circular arc blade 310, whose cross section has a bi-circular arc protruding toward the direction in which the annular disk 301 rotates, including an inner arc 371 and a back arc 372 sequentially disposed along the direction in which the annular disk 301 rotates, and the inner arc 371 and the back arc 372 have the same center and are disposed in parallel. Fig. 18 is a schematic cross-sectional view of a laminar flow fan 110 having bi-circular arc vanes 310. In a preferred embodiment, the outer diameter of each annular disk 301 is 170mm to 180mm, the inner diameter of each annular disk 301 is 110mm to 120mm, the difference between the outer diameter and the inner diameter of the annular disk 301 is about 60mm, the distance between the two ends of the inner arc 371 is the same as the distance between the two ends of the back arc 372, 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 have distances of about 10mm from the inner circumference and the outer circumference of the annular disk 301, respectively, and the length of the chord line 373 is set to the maximum range which can be achieved on the premise of ensuring the stability of the laminar flow fan 110, so that the air volume and wind pressure of the laminar flow fan 110 can meet the use requirements of users.
Fig. 19 is a schematic diagram showing the relationship between the installation angle α of the bi-circular arc blade 310 and the wind 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 bi-circular arc blade 310, and the rotation speed of the motor 400 of the annular disk 301 are all kept constant, and the axis of abscissas refers to the installation angle of the bi-circular arc blade 310, that is, the angle formed by the chord line 373 between the two end points of the inner arc 371 and the 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 bi-circular arc blade 310 and the annular disk 301. In a preferred embodiment, the annular disk 301 has an outer diameter of 175mm, an inner diameter of 115mm, a number of layers of 8 layers, a pitch of 13.75mm, a thickness of 2mm, a chord length of the bi-circular arc blade 310 of 35mm, and a rotational speed of the motor 400 of 1000rpm, and the installation angle α of the bi-circular arc blade 310 may be set to-5 ° to 55 ° in consideration of the total wind volume and wind pressure. When the string 373 and the connection line 374 are sequentially arranged in the direction in which the annular disk 301 rotates, the installation angle α is a positive number; when the connection line 374 and the string 373 are sequentially arranged in the direction in which the annular disk 301 rotates, the attachment angle α is negative. The air quantity and the air pressure of the laminar flow fan 110 are considered at the installation angle, the comprehensive performance of the laminar flow fan 110 is effectively guaranteed, the air outlet of the laminar flow fan 110 can meet the use requirement of a user when the air pressure is high, and the use experience of the user is further improved.
In other embodiments, the blade 361 may be an aerovane 320, whose cross section has a bi-arc shape protruding toward the direction of rotation of the annular disk 301, including an inner arc 371 and a back arc 372 sequentially disposed 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. 20 is a schematic cross-sectional view of a laminar flow fan 110 with aero vanes 320.
Fig. 21 is a schematic diagram of the relationship between the installation angle α of the aviation blade 320 and the wind 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 aviation blade 320, and the rotation speed of the motor 400 of the laminar blower 110 shown in fig. 20 are all kept unchanged, and the abscissa axis refers to the installation angle of the aviation blade 320, that is, the angle formed by the chord line 373 between two end points of the inner arc 371 or the back arc 372 and the connecting line 374 passing through the midpoint of the chord line 373 and the central axis of the annular disc 301 on the same cross section of the aviation blade 320 and the annular disc 301. In a preferred embodiment, the annular disk 301 has an outer diameter of 175mm, an inner diameter of 115mm, a number of layers of 8, a pitch of 13.75mm, a thickness of 2mm, a chord length of the aerovane 320 of 35mm, and a rotational speed of the motor 400 of 1000rpm, where the mounting angle α of the aerovane 320 may be set to-50 ° to 15 ° in consideration of the total air volume and air pressure. The air quantity and the air pressure of the laminar flow fan 110 are considered at the installation angle, the comprehensive performance of the laminar flow fan 110 is effectively guaranteed, the air outlet of the laminar flow fan 110 can meet the use requirement of a user when the air pressure is high, and the use experience of the user is further improved.
The annular disk 301 of the laminar fan 300 may also be arranged in accordance with one or more of the following configurations: the distance between two adjacent annular disks 301 increases gradually along the direction in which air flows in the air inlet channel 302; the inner diameters of the plurality of annular disks 301 are gradually reduced along the direction in which the air flow flows in the air inlet channel 302; each annular disk 301 is an arc-shaped disk gradually approaching the driving disk 305 from the inside to the outside.
In some embodiments, the plurality of annular disks 301 of the laminar flow fan 300 are disposed in parallel at intervals to each other with the same central axis, and the interval between adjacent two annular disks 301 gradually increases along the direction in which the air flows in the air intake passage 302. Fig. 22 is a schematic front view of the laminar flow fan 110 with the annular disks 301 having progressively changing pitches. The inventor finds through multiple experiments that, as the distance between two adjacent annular discs 301 increases gradually along the flowing direction of air in the air inlet channel 302, the air quantity of the laminar flow fan 110 is effectively improved, 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 of the inside of the casing 200 as an example, fig. 24 is a schematic diagram of the relationship between the pitch gradation of the plurality of annular 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 annular disks 301 are all kept constant by the laminar flow fan 110 shown in fig. 22, wherein the axis of abscissa refers to the variation of the pitch between two adjacent annular disks 301 along the bottom-to-top direction. As shown in fig. 24, when the above-mentioned parameters are all kept unchanged, the air volume is greatly affected and the air pressure is little affected by the gradual change of the interval between every two adjacent annular disks 301 in the plurality of annular disks 301 from bottom to top; when the amount of change in the interval between two adjacent annular disks 301 in the bottom-to-top direction, which is indicated by the axis of abscissa, is a positive number, it is explained that the interval between each two adjacent annular disks 301 among the plurality of annular disks 301 gradually increases from bottom to top; when the amount of change in the interval between two adjacent annular disks 301 in the bottom-to-top direction, which is indicated by the axis of abscissa, is negative, it is explained that the interval between each two adjacent annular disks 301 among the plurality of annular disks 301 gradually decreases from bottom to top. Accordingly, as can be seen from fig. 24, when the interval variation between each two adjacent annular disks 301 of the plurality of annular disks 301 is-1 mm, 1mm and 2mm, the air volume and air pressure of the laminar flow fan 110 are greatly improved.
As mentioned above, the connection member 306 of the laminar flow fan 300 in the embodiment of the present invention may be the connection rod 362. Fig. 23 is a schematic perspective view of the laminar flow fan 110 shown in fig. 22. The connection rods 362 may be plural and penetrate the edge portions of the driving disk 305 and the plurality of annular disks 301 at uniform intervals. The plurality of connecting rods 362 penetrate through the edge portions of the driving disc 305 and the plurality of annular discs 301 at uniform intervals, so that the connection relationship between the driving disc 305 and the plurality of annular discs 301 is ensured to be stable, and further, when the motor 400 drives the driving disc 305 to rotate, the driving disc 305 can stably drive the plurality of annular discs 301 to rotate, thereby improving the working reliability of the laminar flow fan 110. Meanwhile, when the connection member 306 is the connection rod 362, the rotation speed of the motor 400 is approximately in a linear relationship with the air volume of the laminar flow fan 110, so in a preferred embodiment, the motor 400 may be further configured to: the rotation 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 first obtained, and then the rotational speed of the motor 400 may be determined according to a linear relationship between the target air volume and the rotational speed of the motor 400. The target air volume may be obtained by an input operation of a user. In a preferred embodiment, the annular disks 301 have an outer diameter of 175mm, an inner diameter of 115mm, and a number of layers of 8, and the spacing between two adjacent annular disks 301 is set from bottom to top in order: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm and 19.75mm, and when the thickness is 2mm, the linear relation between the rotating speed of the motor 400 and the air quantity 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 present embodiment gradually decrease along the direction in which the air flow flows in the air inlet channel 302. Taking the laminar flow fan 300 disposed at the upper portion of the inside of the case 200 as an example, fig. 25 is a schematic sectional view of the laminar flow fan 300 in which the inner diameter of the annular disk 301 is gradually changed. Fig. 26 is a schematic diagram of the relationship between the gradual change of the inner diameters of the plurality of annular 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 annular disks 301 are all kept constant by the laminar flow fan 110 having the laminar flow fan 300 shown in fig. 25, wherein the axis of abscissa refers to the amount of change of the inner diameter of each annular disk 301 with the inner diameter of the annular disk 301 adjacent therebelow. As shown in fig. 26, when the above-mentioned parameters are kept unchanged, the inside 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 amount of change in the inner diameter of each annular disk 301 represented by the axis of abscissa and the inner diameter of the annular disk 301 adjacent below is positive, it is explained that the inner diameters of the plurality of annular disks 301 gradually increase from bottom to top; when the variation of the inner diameter of each annular disk 301 and the inner diameter of the annular disk 301 adjacent below, which is indicated by the axis of abscissa, is negative, it is explained that the inner diameters of the plurality of annular disks 301 gradually decrease from bottom to top. As can be seen from fig. 26, when the inner diameters of the plurality of annular disks 301 are gradually reduced from bottom to top, the air volume is increased and the air pressure is slightly reduced; when the inner diameters of the plurality of annular disks 301 are gradually increased from bottom to top, the wind pressure is slightly increased, and the wind quantity is greatly reduced. In a preferred embodiment, the outer diameter of the annular disks 301 is 175mm, the maximum inner diameter of the annular disks 301 is 115mm, the interval is 13.75mm, the number is 8, the thickness is 2mm, the rotation speed of the motor 400 is 1000rpm, and in this case, considering comprehensively the air volume and the air pressure, the variation of the inner diameter of each annular disk 301 from the inner diameter of the annular disk 301 adjacent below is set to be-5 mm, that is, the inner diameters of the 8 annular disks 301 are respectively: 115mm, 110mm, 105mm, 100mm, 95mm, 90mm, 85mm, 80mm.
In some embodiments, the annular disk 301 of the laminar fan 300 is an arcuate disk that gradually approaches the drive disk 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 arranged as an arc disc which is gradually raised 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 fluid flow, the external air entering the laminar flow fan 300 is more beneficial, the air quantity loss is effectively reduced, and the air outlet of the laminar flow fan 110 is ensured to meet the use requirement of a user. Fig. 27 is a schematic view showing a central angle θ of an inner and outer diameter line of the plurality of annular disks 301 on the same longitudinal section passing through the central axis. Fig. 28 is a schematic diagram showing the relationship between the central angle θ and the air volume and air pressure when the outer diameter, the number of layers, the pitch, the thickness, and the rotation speed of the motor 400 of the annular disk 301 are all kept unchanged. As shown in fig. 28, when the above-mentioned parameters are all kept unchanged, the air volume increases and then decreases with a gradual increase in the central angle θ, and the air pressure slightly increases. In a preferred embodiment, the annular disk 301 has an outer diameter of 175mm, a number of layers of 10, a pitch of 13.75mm, and a thickness of 2mm, and the motor 400 rotates at 1000rpm, and the central angle θ may be set to 9 ° to 30 ° in consideration of the total air volume and the air pressure. And as shown in fig. 28, when the central angle θ is set to 15 °, the air volume of the laminar flow fan 110 reaches the maximum value.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (9)
1. An air purifier, comprising:
The shell is provided with an air inlet and an air outlet;
The annular filter element is arranged in the shell, and external air enters the shell from the air inlet and then reaches the annular filter element for filtering; and
The laminar flow fan is arranged in the shell and is provided with an air inlet channel, air which enters the air inlet channel after being filtered by the annular filter element is disturbed by fluid viscosity effect to form laminar flow air, and the laminar flow air is discharged out of the shell from the air outlet;
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 form the air inlet channel together, and air filtered by the annular filter element enters the air inlet channel to reach gaps among the plurality of annular discs;
the laminar flow fan further comprises:
A driving disc disposed in parallel with the plurality of annular discs at intervals; and
A connection member penetrating the driving disk and the plurality of annular disks to connect the plurality of annular disks to the driving disk;
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 disc, and the double arc comprises an inner arc and a back arc which are sequentially arranged along the rotating direction of the annular disc;
the air purifier further includes:
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 notch;
the shell is provided with the air outlet at the position corresponding to the notch, and the laminar air flows out of the shell through the notch and the air outlet in sequence.
2. An air purifier as recited in claim 1, wherein,
The laminar flow fan comprises:
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 layers close to the surfaces of the plurality of annular discs are driven by the plurality of annular discs to rotate from inside to outside to form the laminar flow wind.
3. An air purifier as recited in claim 2, wherein,
The upper part in the shell is provided with the laminar flow fan and the motor, and the upper part of the shell is provided with the air outlet at the position corresponding to the laminar flow fan;
the annular filter element is vertically arranged below the laminar flow fan.
4. An air purifier as recited in claim 3, wherein,
The shell is provided with the air outlet at the upper part of the shell around the laminar flow fan.
5. An air purifier as recited in claim 2, wherein,
The upper part and the lower part in the shell are respectively provided with the laminar flow fans and the motors, and the upper part and the lower part of the shell are respectively provided with the air outlets at positions corresponding to the two laminar flow fans;
the annular filter element is vertically arranged between the two laminar flow fans, and the air inlet is formed in the middle of the shell around the annular filter element in a circle.
6. An air purifier as recited in claim 2, wherein,
The motor is configured to directly drive the driving disc to rotate, and the driving disc drives the plurality of annular discs to rotate.
7. The air purifier as recited in claim 6, wherein,
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 method comprises the steps of
The fixing frame is provided with a body part and a claw part extending from the body part towards 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 is connected with the laminar flow fan;
The claw portion is used for being fixed with the fixed plate and is matched with the concave portion.
8. The air purifier as recited in claim 6, wherein,
The inner arc and the back arc have different circle centers and both ends intersect, or
The inner arc and the back arc have the same circle center and are arranged in parallel.
9. The air purifier as recited in claim 6, wherein,
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 air flow in the air inlet channel;
The inner diameters of the plurality of annular disks are gradually reduced along the flowing direction of the air flow in the air inlet channel;
Each annular disc is an arc disc which gradually approaches the driving disc from the inner side to the outer side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910045474.0A CN111437669B (en) | 2019-01-17 | 2019-01-17 | Air Purifier |
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| CN201910045474.0A CN111437669B (en) | 2019-01-17 | 2019-01-17 | Air Purifier |
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| CN114193366B (en) * | 2020-09-18 | 2025-03-11 | 埃克斯黑尔风扇香港有限责任公司 | Laminar flow fan and rotation alignment method of laminar flow fan |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896609A (en) * | 2005-07-15 | 2007-01-17 | 乐金电子(天津)电器有限公司 | Air conditioner |
| CN204084630U (en) * | 2014-08-05 | 2015-01-07 | 江苏久信医疗科技股份有限公司 | A kind of air purifier |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01302045A (en) * | 1988-05-30 | 1989-12-06 | Daikin Ind Ltd | air conditioner |
| GB2270117A (en) * | 1992-08-20 | 1994-03-02 | Ibm | Laminar flow fan and apparatus incorporating such a fan. |
| US7341424B2 (en) * | 1999-12-23 | 2008-03-11 | Dial Discoveries, Inc. | Turbines and methods of generating power |
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2019
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896609A (en) * | 2005-07-15 | 2007-01-17 | 乐金电子(天津)电器有限公司 | Air conditioner |
| CN204084630U (en) * | 2014-08-05 | 2015-01-07 | 江苏久信医疗科技股份有限公司 | A kind of air purifier |
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Effective date of registration: 20241018 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Country or region after: China 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. Country or region before: China |
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