CN106089805A - A kind of air flow drive device of air purifier - Google Patents
A kind of air flow drive device of air purifier Download PDFInfo
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- CN106089805A CN106089805A CN201610681603.1A CN201610681603A CN106089805A CN 106089805 A CN106089805 A CN 106089805A CN 201610681603 A CN201610681603 A CN 201610681603A CN 106089805 A CN106089805 A CN 106089805A
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- air
- spiral case
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- snail tongue
- impeller
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Present invention is disclosed the air flow drive device of a kind of air purifier, the air flow drive device of this air purifier includes shell of air purifier and centrifugal blower, orders about air-flow and passes sequentially through filter screen, centrifugal blower and air outlet.Centrifugal blower includes spiral case air channel, impeller, the horizontal plane at the plane at the air-out direction axle place of spiral case duct outlet and impeller axle place, described impeller air inlet through hollow shaft direction in space in being arranged in parallel；Spiral case duct outlet is arranged at lateral and perpendicular with the impeller horizontal diameter layout of its housing, and each air outlet direction, spiral case air channel is along the lateral air-out in spiral case curve near tangent direction and is all counterclockwise or clockwise direction.The air flow drive device of this air purifier may be implemented in the impeller that installation dimension is maximum in shell of air purifier, thus improves the air quantity of air purifier；The design of left and right sides air-out simultaneously, improves reliability and Consumer's Experience；Both sides air-out volume is impartial, does not results in imbalance when system is run.
Description
Technical field
The present invention relates to air cleaning facility technical field, be specifically related to the air flow drive device of a kind of air purifier.
Background technology
Air purifier, also known as air cleaner, air cleaner, depurator, refers to absorption, decomposes or converts each
Kind of air pollutants, air pollutants generally comprise the finishing pollution of PM2.5, dust, pollen, abnormal flavour, formaldehyde etc, antibacterial,
Anaphylactogen etc..Air is drawn in equipment by air inlet by the principle of air purifier generally by modes such as machineries
Portion, and through being arranged on the filter of device interior or other kinds of cleaning module, by filtering, adsorb or the side such as decomposition
Formula, is taken out part pollutant in the air being inhaled into device interior, then is discharged in air by air outlet.
Air is drawn through filter screen by the suction that air purifier or similar devices are produced by blower fan, enters into blower interior,
The flabellum rotated again is shifted air outlet onto and is discharged.Filter screen is normally placed at before blower fan, and the reason so arranged is that air passes through
Enter back into centrifugal blower after purification, be a well protection to centrifugal blower, can be with the service life of extension device, it is possible to avoid
The problems such as abnormal flavour are produced after the internal long-term dust stratification of centrifugal blower.Owing to filter screen is generally of certain resistance, all air cleanings
Device or similar devices the most all use the centrifugal blower of band spiral case.The effect of spiral case is will be dynamic while directing the air to outlet
Pressure changes into static pressure, improves efficiency and the pressure of centrifugal blower, thus the resistance overcoming filter screen to bring, produce certain wind
Amount.For centrifugal blower is leaned forward in major part air purifier use, spiral case is the requisite pith in air channel.
Generally the curve of spiral case is the design parameter according to centrifugal blower, according to archimedes curve, or loaarithmic curve, or
Four arcs simulates above-mentioned two class curves, or other simulations being done front two class curves.Centrifugal blower is close to by whole air channel
The state of full parcel, only has opening air feed at air outlet and discharges.For volute casing centrifugal blower fan, due to the existence of spiral case,
The size in whole air channel is bigger.Under normal circumstances, the centrifugal blower diameter of air cleaning system typically only has overall dimensions
50%-75%, and the size of centrifugal blower, be one of the deciding factor of air cleaning system air quantity.
One typical air purifier centrifugal blower volute is as shown in Figure 1: in the drawings, and middle circle is centrifugal blower
Impeller outer edge, air inlet is in the centre of centrifugal blower, and the curve of outside is spiral case, and the above is air outlet.Wind is along being perpendicular to
The direction of plan enters, along with the rotation of centrifugal blower flabellum, by the region that in spiral case, constantly change is big, from top air outlet
Discharge.For the upwardly opening air channel of the air purifier of general domestic, the air outlet of centrifugal blower and impeller, clean at air
Change in the time that device does not uses, substantial amounts of dust or foreign material can be fallen into.These dusts return inside pollution centrifugal blower, when user exists
Can again spray when next time is reused, bring bad Consumer's Experience.And after centrifugal blower inside is contaminated, there is also micro-life
The risk of the secondary pollutions such as thing growth.Owing to the air of air purifier is to first pass through filter screen, then through centrifugal blower, described from
Heart-wind syndrome machine blower interior pollutes and cannot be filtered out by filter screen.
For the air purifier of general domestic, upwardly opening air channel, in the time that air purifier does not uses, meeting
Fall into substantial amounts of dust or foreign material.These dusts return inside pollution centrifugal blower, when user can be again when next time is reused
Ejection, brings bad Consumer's Experience.And after blower interior is contaminated, there is also the risk of the secondary pollutions such as growth of microorganism.
Owing to the air of air purifier is to first pass through filter screen, then through blower fan, described blower interior pollute be cannot by filter screen mistake
Filter.
Summary of the invention
The purpose of the present invention is contemplated to solve the above-mentioned problems in the prior art, proposes a kind of simple in construction, and
The air flow drive device of a kind of air purifier of side air-out simultaneously can be realized.
The purpose of the present invention is achieved through the following technical solutions: the air flow drive device of a kind of air purifier, its bag
Having included shell of air purifier, centrifugal blower, described centrifugal blower includes spiral case air channel, impeller, described spiral case duct outlet
The horizontal plane at plane and impeller axle place, described impeller air inlet through hollow shaft direction at air-out direction axle place be parallel in space
Arrange.
Preferably, described spiral case duct outlet is arranged at lateral and perpendicular with the impeller horizontal diameter cloth of its housing
Putting, each air outlet direction, described spiral case air channel is along the lateral air-out in spiral case curve near tangent direction and is all counterclockwise or up time
Pin direction.
Preferably, described spiral case air channel at least includes two sections of symmetrically arranged spiral case curves, and each spiral case curve includes curve
Simulation starting point, snail tongue, curve, each spiral case curve is that sequence is the most gradually opened according to curve simulation starting point, snail tongue, curve, and two is adjacent
Phase contrast between the snail tongue of spiral case curve is at least 90 degree, and in described spiral case air channel, each section of spiral case curve wraps up impeller outer edge respectively
The region of 25%-50%, the 2%-10% that gap is impeller outer diameter between described snail tongue and impeller, the external diameter of described impeller and two sections right
Claim the ratio of farthest, spiral case curve left and right distance more than 75%.
Preferably, described spiral case air channel is on the basis of 0 degree of impeller outer diameter circle, on the basis of wherein one section of spiral case curve
Line, arranges the simulation starting point of datum line between 270-360 degree, arranges the snail tongue of datum line between 270-315 degree, this snail tongue
The outer rim extended line of extension broken line and another section spiral case curve between 270-360 degree collectively forms benchmark air outlet.
Preferably, the curve shape of each section of spiral case curve in described spiral case air channel is archimedes curve, or loaarithmic curve,
Or the simulation of both the above curve.
Preferably, described snail tongue is single arc-shaped snail tongue or bicircular arcs snail tongue, the 2%-of the described a diameter of impeller outer diameter of snail tongue
8%。
Preferably, the snail tongue of each section of spiral case curved section in described spiral case air channel and curve are Split type structure, and described spiral case divides
For two sections, described two sections spiral case all forms a complete spiral case with described shell of air purifier clamping.
Preferably, the snail tongue of each section of spiral case curve in described spiral case air channel and curve are an overall structure.
Preferably, the camber line terminal of snail tongue touches with described air purifier outer casing inner wall, described air purifier shell
Inwall and spiral case contact of a curve.
Preferably, described snail tongue is single arc-shaped snail tongue, about the external diameter of described impeller and two sections of symmetrical spiral case curved sections
The ratio of farthest distance is more than 90%, the 3%-5% that gap is impeller outer diameter between two snail tongues and impeller；In described spiral case air channel
Two sections of spiral case curves wrap up the region of blower fan outer rim 30%-45% respectively；Described spiral case air channel with impeller outer diameter circle 0 degree as base
Standard, line on the basis of wherein one section of spiral case curve, the simulation starting point of datum line is set between 270-315 degree, at 270-285 degree
Between the snail tongue of datum line, described benchmark snail tongue extension broken line and another section of corresponding section of spiral case curve be set constitute benchmark air-out
Mouthful, the extended line of described benchmark air outlet outer rim is between 270-360 degree；Described another section of spiral case curve is symmetrical based on datum line
Arranging, its simulation starting point, between 90-135 degree, arranges snail tongue, described snail tongue extension broken line and another section between 90-105 degree
Spiral case curve correspondence section constitutes another air outlet, the extended line of described air outlet outer rim between 90-180 degree, described spiral case wind
Road two air outlet air-out direction is bilateral air-out along spiral case curve near tangent direction and is all counterclockwise.
The advantage of technical solution of the present invention is mainly reflected in: it is same that the air flow drive device of this air purifier can realize side
Time air-out design, with prior art air outlet on top compared with, greatly reduce dust or foreign body enter into system from top
Internal risk, improves reliability and Consumer's Experience；Both sides air-out volume is impartial, does not results in injustice when system is run
Weighing apparatus；The ratio of the overall width (distance of farthest, curve left and right, two ends) of blower sizes and system, can reach 80%-90% or
Above, the 50%-75% of the most original scheme, i.e. in the case of system-wide determines, employing technical solution of the present invention can
With the blower fan that preferred dimension is bigger, thus reach bigger air quantity, in other words, in the case of using identical blower fan, use this
The system dimension of inventive technique scheme can be accomplished less.
Accompanying drawing explanation
Referring to the drawings, the disclosure will be easier to understand.Skilled addressee readily understands that: this
A little accompanying drawings are intended solely for illustrative purposes, and are not intended to be construed as limiting protection scope of the present invention.Additionally, figure is similar to
Numeral is in order to represent similar parts, wherein:
Fig. 1 is the structural representation of prior art；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is the structural representation of the present invention；
Figure is numbered: 1---shell of air purifier, 2---centrifugal blower, 21---spiral case air channel, 211---spiral case air channel
Air outlet, 212---air outlet extension extended line, 4---spiral case curve, 41---curve simulation starting point, 42---snail tongue, 43---
Curve, the other parts of 44---spiral case.
Detailed description of the invention
The purpose of the present invention, advantage and feature, by by the non-limitative illustration of preferred embodiment below carry out diagram and
Explain.These embodiments are only the prominent examples of application technical solution of the present invention, all take equivalent or equivalent transformation and
The technical scheme formed, within all falling within the scope of protection of present invention.
As in figure 2 it is shown, the air flow drive device of a kind of air purifier, it includes shell of air purifier 1, is centrifuged wind
Machine 2.Described centrifugal blower 2 includes spiral case air channel 21, impeller, the plane at the air-out direction axle place of described spiral case duct outlet
With the horizontal plane at impeller axle place, described impeller air inlet through hollow shaft direction in space in being arranged in parallel, in technical scheme
In, air-flow is along the air inlet through hollow shaft of centrifugal blower, tangential air-out.
As in figure 2 it is shown, described spiral case duct outlet 211 is arranged at lateral and perpendicular with the impeller diameter cloth of its housing
Putting, each air outlet direction, described spiral case air channel is along the lateral air-out in spiral case curve near tangent direction and is all counterclockwise or up time
Pin direction.Described spiral case air channel at least includes two sections of symmetrically arranged spiral case curves, as in figure 2 it is shown, each spiral case curve 4 includes song
Line simulation starting point 41, snail tongue 42, curve 43.The camber line terminal of snail tongue touches with described air purifier outer casing inner wall 1, described sky
Gas purifier outer casing inner wall 1 and spiral case contact of a curve.The effect of described spiral case 42 is to be guided by the gas leaving described impeller 22
Volute outlet, and part dynamic pressure is changed into static pressure.The structure of spiral case is complicated space curved surface body, and spiral case is centrifugal fan
Critical component, spiral case inlet pressure is directly connected to the flow losses in described spiral case, the also aeroperformance to impeller the biggest shadow
Ringing, it directly affects efficiency and the performance parameter such as output flow, pressure of blower fan.
As shown in Figure 2: wherein middle circle is the outer of impeller, two ends, outside curve is two symmetrical spiral cases, and arrow refers to
Show the direction of air-out.What this figure described is the example that rotates in one direction of impeller, if impeller direction of rotation is contrary, then
Two spiral cases and wind direction also answer correspondence in turn.
As in figure 2 it is shown, each spiral case curve is the most gradually opened for sequence according to curve simulation starting point 41, snail tongue 42, curve 43, two
Phase contrast between the snail tongue of adjacent spiral case curved section is at least 90 degree.In described spiral case air channel, each section of spiral case curve wraps up leaf respectively
The region of wheel outer rim 25%-50%, in the present embodiment, in described spiral case air channel, each section of spiral case curve is preferably to wrap up leaf respectively
The region of wheel outer rim 30%-45%.And whole air channel is close to the state of full parcel to centrifugal blower in the technical scheme of prior art,
Only at air outlet, there is opening air feed to discharge.
The 2%-10% that gap is impeller outer diameter between described snail tongue 42 and impeller, in the present embodiment, described snail tongue 42 with
Gap between impeller is preferably the 3% of impeller outer diameter.The external diameter of described impeller 22 and farthest, two sections of symmetrical spiral case curve left and right away from
From ratio more than 75%, in the present embodiment, the external diameter of described impeller and farthest, two sections of symmetrical spiral case curve left and right away from
From ratio can reach 80%-90% or more than, the noticeably greater than 50%-75% in prior art.Two sections of symmetrical snails
In the case of farthest, shell curve left and right distance determines, use the present invention with the bigger blower fan of preferred dimension, thus can to reach more
Big air quantity, in other words, in the case of using identical blower fan, uses the system dimension of technical solution of the present invention can accomplish more
Little.
As in figure 2 it is shown, described spiral case air channel is on the basis of 0 degree of impeller outer diameter circle, with wherein one section of spiral case curve as base
Directrix, arranges the simulation starting point of datum line between 270-360 degree, arranges the snail tongue of datum line between 270-315 degree, described
Benchmark snail tongue extension broken line constitutes benchmark air outlet, the prolongation of described benchmark air outlet outer rim with another section of corresponding section of spiral case curve
Line 212 is between 270-360 degree, and described each section of spiral case curve is symmetrical arranged based on datum line.
The curve shape of each section of spiral case curve in described spiral case air channel is archimedes curve, or loaarithmic curve, or more than
The simulation of two kinds of curves.Length of a curve and existing scheme have the difference of essence, and the length of the most single spiral case is than the two of this programme
Section spiral case to be grown a lot.Described snail tongue 42 is single arc-shaped snail tongue or bicircular arcs snail tongue, the described a diameter of impeller outer diameter of snail tongue
2%-8%, in the present embodiment, described snail tongue diameter is preferably the 3%-4% of impeller outer diameter；Described snail tongue may be used without multistage and sets
Meter.
The snail tongue of each section of spiral case curve in described spiral case air channel and curve are Split type structure, described snail tongue 42 and curve negotiating
It is connected as one overall.In technical solution of the present invention, described spiral case is divided into two sections, and described two sections spiral case is all and air cleaning
Device housing clamping, forms a complete spiral case.
The snail tongue of each section of spiral case curve in described spiral case air channel and curve are an overall structure.In the present embodiment, described
Spiral case and described snail tongue can be that integral type connects alternatively separate type connection, and described spiral case and described snail tongue can be made aborning
It is an entirety, it is also possible to two parts making separation produce respectively, then assemble.The benefit being separated into two parts is not
By the intensity of misgivings junction, the thickness of joint face can be accomplished the thinnest.Spiral case such as integral production, can only use a kind of material
Material.After separating making, snail tongue can use foamed materials to make to reduce noise, and other parts can still use plastics,
Metal or other material make, and together make with the other parts of casing, save overall manufacturing cost.
Described spiral case duct-curve is two sections of symmetrically arranged spiral case curves, the phase between the snail tongue of two adjacent segment spiral case curves
Potential difference is 180 degree.It is optimal that described spiral case duct-curve is arranged to two sections, and described spiral case duct-curve is arranged to two sections can be made
The width of blower fan diameter/depurator reaches maximum, such that it is able to realize using maximum straight under the size of certain air purifier
The purpose of footpath blower fan, i.e. 90 degree and 270 degree of directions in Fig. 2 schematic diagram, it is assumed that the position in 90 degree of directions is A, 270 degree of directions
Volume position is B, and the distance between A to B is the width of described air purifier, and described spiral case is nearest from described centrifugal blower.
The volute shape of following several situations is analyzed by the technical program, it is contemplated that following several situation: complete
One section of whole spiral case, two sections of spiral cases in the technical program, three sections of spiral cases, four sections of spiral cases, and multistage spiral case.The curve of spiral case is
The most gradually rotate away, the closer to snail tongue place from blower fan more close to.Position due to the positions of 90 degree Yu 270 degree
Symmetry, two sections of spiral cases just can be individually placed to 90 degree and the position of 270 degree the narrowest place, and three sections or more than three sections
Any odd number section spiral case (assumes that every section of spiral case is the same), be cannot accomplish the narrowest place be directly aligned in 90 degree and
270 degree of the two are local.Therefore the arrangement of two sections of spiral cases, is an advantage over any odd number section spiral case.
Two sections of spiral case more even number section spiral cases of ratio, such as four sections, are can to accomplish more preferably two sections of spiral cases therein
Narrow place is individually placed to 90 degree and the position of 270 degree.Why four sections or more multistage spiral case set forth below are not as the effect of two sections of spiral cases
The best, reason is: owing to the opening of spiral case must have suitable aperture, the wind being otherwise pressed in spiral case can not blow not go out, and makes
Become the decline of systematic function.In general, spiral case is the shortest, and its curve is the biggest to the amplitude of external rotation, to reach finally can have
The purpose of larger open.It is to say, spiral case is the shortest, curve is from " origin of curve " (the i.e. virtual part of spiral case and blower fan distance
It is zero) start to want big toward the curve that the spiral case that the Amplitude Ratio of external rotation is longer is corresponding.Therefore, from snail tongue (from the beginning of i.e. spiral case is actual
Place) start, its distance with blower fan, also can be some larger.It is to say, four sections or more multistage spiral case, itself and fan blade it
Between distance be greater than two sections of spiral cases.Say further, under the same performance condition, two sections of spiral cases can accomplish at 90 degree and
The place of 270 degree, than four sections or more multistage spiral case closer to.Additionally, if if four sections or more multistage spiral case, its air outlet number
Mesh also can be the most more, it is impossible to accomplish air outlet to be only distributed in the left and right sides.
Embodiment 1: in the present embodiment, described snail tongue is preferably single arc-shaped snail tongue, the external diameter of described impeller and two sections
The ratio of symmetrical farthest, spiral case curve left and right distance is more than 90%, further, and the external diameter of described impeller and two sections of symmetrical snails
The ratio of farthest, shell curve left and right distance is 95%.Gap between two snail tongues and impeller is preferably impeller outer in the present embodiment
The 3%-5% in footpath.
In described spiral case air channel, two sections of spiral case curves wrap up the region of blower fan outer rim 30%-45% respectively；Every section of curve and wind
The relation of the spacing of machine is: the system that nominal air delivery is big, and the opening of curve should be bigger, the system that nominal air delivery is little, curve
Opening should be less.
Described spiral case air channel is on the basis of 0 degree of impeller outer diameter circle, and line on the basis of wherein one section of spiral case curve, at 270-
The simulation starting point of datum line is set between 315 degree, in the present embodiment, is preferably the simulation that datum line is set at 270 degree of these points
Starting point.The snail tongue of datum line is set at 270 degree, the snail tongue extension broken line of described datum line, described benchmark snail tongue are set at 225 degree
Extension broken line section corresponding with curve constitutes benchmark air outlet, and the extended line of described benchmark air outlet outer rim is 255 degree of these positions.
Described another section of spiral case curve is symmetrical arranged based on datum line, and its simulation starting point is between 90-135 degree, at 90-
Arranging snail tongue between 105 degree, described snail tongue extension broken line section corresponding with curve constitutes another air outlet, described air outlet outer rim
Extended line is between 90-180 degree, and described spiral case air channel two air outlet air-out direction is that bilateral goes out along spiral case curve near tangent direction
Wind is also all counterclockwise.
As it is shown on figure 3, the most described snail tongue 42 and impeller outer are in smoothing junction, jointly along the place at 270 degree
Constituting archimedes curve or a part for loaarithmic curve, coupling part is thinnest part.Described spiral case and other parts of spiral case
Can be aborning as an entirety, it is also possible to two parts making separation produce respectively, then assemble.It is separated into two
The benefit of parts is the intensity not spending misgivings junction, and the thickness of joint face can be accomplished the thinnest.Described spiral case such as one
Make, a kind of material can only be used.After separating making, snail tongue can use foamed materials to make to reduce noise, and other portions
Point can still use plastics, metal or other materials to make, and together make with other parts of casing, save overall manufacturing
Cost.
Embodiment 2: in the present embodiment, described snail tongue is preferably single arc-shaped snail tongue, the external diameter of described impeller and two sections
The ratio of symmetrical farthest, spiral case curve left and right distance is more than 90%, further, and the external diameter of described impeller and two sections of symmetrical snails
The ratio of farthest, shell curve left and right distance is 90%.Gap between two snail tongues and impeller is preferably impeller outer in the present embodiment
The 5% of footpath.
In described spiral case air channel, two sections of spiral case curves wrap up the region of blower fan outer rim 30%-45% respectively；Every section of curve and wind
The relation of the spacing of machine is: the system that nominal air delivery is big, and the opening of curve should be bigger, the system that nominal air delivery is little, curve
Opening should be less.
Described spiral case air channel is on the basis of 0 degree of impeller outer diameter circle, and line on the basis of wherein one section of spiral case curve, in this reality
Execute in example, the simulation starting point of datum line is preferably set at 315 degree.The snail tongue of datum line is set at 285 degree, outside described benchmark snail tongue
Prolonging broken line and constitute benchmark air outlet with another section of corresponding section of spiral case curve, the extended line of described benchmark air outlet outer rim is at 360 degree.
Described another section of spiral case curve is symmetrical arranged based on datum line, and its simulation starting point, between 135 degree, sets at 105 degree
Putting snail tongue, described snail tongue extension broken line constitutes another air outlet with another section of corresponding section of spiral case curve, described air outlet outer rim
Extended line is at 180 degree, and described spiral case air channel two air outlet air-out direction is that bilateral air-out is the most same along spiral case curve near tangent direction
For counterclockwise.
As it is shown on figure 3, the most described snail tongue 42 and impeller outer are in smoothing junction, jointly along the place at 280 degree
Constituting archimedes curve or a part for loaarithmic curve, coupling part is thinnest part.Described spiral case and other parts of spiral case
Can be aborning as an entirety, it is also possible to two parts making separation produce respectively, then assemble.It is separated into two
The benefit of parts is the intensity not spending misgivings junction, and the thickness of joint face can be accomplished the thinnest.Described spiral case such as one
Make, a kind of material can only be used.After separating making, snail tongue can use foamed materials to make to reduce noise, and other portions
Point can still use plastics, metal or other materials to make, and together make with other parts of casing, save overall manufacturing
Cost.
Do not see direct for fan outlet half-twist on market from the design of side air-out, be primarily due to two
Individual obstacle: one is that air purifier air quantity is relatively big, can bring the imbalance of whole system from unilateral air outlet；Two is if by whole
After system crosses, the width of equipment can be significantly increased, and is unfavorable for using, the air purifier of current side air-out or equipment,
Typically use undersized blower fan.This technical scheme of the present invention can be applicable in air purifier, it is achieved that left and right two
The design of side simultaneously air-out, with air outlet on top compared with, greatly reduce dust or foreign body enter into internal system from top
Risk, improve reliability and Consumer's Experience.
The present invention proposes a kind of new air channel technical scheme, is using onesize (350 × 130) forward centrifugal machine institute
The experiment done, tests under rotating speed is 300-800RPM, and the performance of two ways is consistent.And the technical scheme of prior art is
System width is 480, and the system-wide using the present invention is 410, for the 85% of existent technique scheme.Above rotating speed interval is
The conventional state of air purifier, therefore technical scheme is suitable for the air flow drive device of air purifier
?.
The features such as it is compact that the technical program has novel structure, and air-out is uniform, can realize Bidirectional outlet air, and air output is equal
Deng, do not result in the imbalance of system, improve air output, thus improve the purification efficiency of this air purifier.
The present invention, by the design to centrifugal blower volute, has reached two purposes: one can be at identical outside dimension
Under restriction, use larger sized centrifugal blower, reach more Wind Volume；Two is air outlet upward, has made two side air-outs into,
Dust stratification problem within when alleviating equipment non-operating state, improves service life, improves Consumer's Experience.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit and essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention, should not be considered as limiting involved claim by any reference in claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (10)
1. an air flow drive device for air purifier, it includes shell of air purifier (1), centrifugal blower (2), its spy
Levy and be: described centrifugal blower (2) includes spiral case air channel (21), impeller, the air-out direction axle institute of described spiral case duct outlet
The horizontal plane at plane and impeller axle place, described impeller air inlet through hollow shaft direction in space in being arranged in parallel.
The air flow drive device of a kind of air purifier the most according to claim 1, it is characterised in that: described spiral case air channel
Air outlet (211) is arranged at lateral and perpendicular with the impeller horizontal diameter layout of its housing, each air outlet in described spiral case air channel
Air-out direction is along the lateral air-out in spiral case curve near tangent direction and is all counterclockwise or clockwise direction.
The air flow drive device of a kind of air purifier the most according to claim 1 and 2, it is characterised in that: described spiral case
Air channel at least includes that two sections of symmetrically arranged spiral case curves, each spiral case curve (4) include curve simulation starting point (41), snail tongue
(42), curve (43), each spiral case curve is that sequence is the most gradually opened according to curve simulation starting point, snail tongue, curve, and two adjacent spiral cases are bent
Phase contrast between the snail tongue of line is at least 90 degree, and in described spiral case air channel, each section of spiral case curve wraps up impeller outer edge 25%-respectively
The region of 50%, the 2%-10% that gap is impeller outer diameter between described snail tongue (42) and impeller, the external diameter of described impeller and two sections right
Claim the ratio of farthest, spiral case curve left and right distance more than 75%.
The air flow drive device of a kind of air purifier the most according to claim 3, it is characterised in that: described spiral case air channel
On the basis of 0 degree of impeller outer diameter circle, line on the basis of wherein one section of spiral case curve, between 270-360 degree, datum line is set
Simulation starting point, the snail tongue of datum line is set between 270-315 degree, this snail tongue extension broken line and another section are at 270-360 degree
Between the outer rim extended line of spiral case curve collectively form benchmark air outlet.
The air flow drive device of a kind of air purifier the most according to claim 3, it is characterised in that: described spiral case air channel
The curve shape of each section of spiral case curve be archimedes curve, or loaarithmic curve, or the simulation of both the above curve.
The air flow drive device of a kind of air purifier the most according to claim 3, it is characterised in that: described snail tongue (42)
For single arc-shaped snail tongue or bicircular arcs snail tongue, the 2%-8% of the described a diameter of impeller outer diameter of snail tongue.
The air flow drive device of a kind of air purifier the most according to claim 6, it is characterised in that: described spiral case air channel
Snail tongue and the curve of each section of spiral case curved section be Split type structure, described spiral case is divided into two sections, described two sections spiral case
All form a complete spiral case with described shell of air purifier (1) clamping.
The air flow drive device of a kind of air purifier the most according to claim 6, it is characterised in that: described spiral case air channel
Snail tongue and the curve of each section of spiral case curve be an overall structure.
The air flow drive device of a kind of air purifier the most according to claim 3, it is characterised in that: the camber line of snail tongue is eventually
Point touches with described air purifier outer casing inner wall (1), described air purifier outer casing inner wall (1) and spiral case contact of a curve.
The air flow drive device of a kind of air purifier the most according to claim 9, it is characterised in that: described snail tongue is
Single arc-shaped snail tongue, the ratio of the external diameter of described impeller and farthest, two sections of symmetrical spiral case curved section left and right distance is more than 90%, two
Gap between snail tongue and impeller is the 3%-5% of impeller outer diameter；In described spiral case air channel, two sections of spiral case curves wrap up outside blower fan respectively
The region of edge 30%-45%；Described spiral case air channel is on the basis of 0 degree of impeller outer diameter circle, on the basis of wherein one section of spiral case curve
Line, arranges the simulation starting point of datum line between 270-315 degree, arranges the snail tongue of datum line, described base between 270-285 degree
Quasi-snail tongue extension broken line constitutes benchmark air outlet, the extended line of described benchmark air outlet outer rim with another section of corresponding section of spiral case curve
Between 270-360 degree；Described another section of spiral case curve is symmetrical arranged based on datum line, its simulation starting point 90-135 degree it
Between, snail tongue is set between 90-105 degree, described snail tongue extension broken line constitutes another air-out with another section of corresponding section of spiral case curve
Mouthful, the extended line of described air outlet outer rim is between 90-180 degree, and described spiral case air channel two air outlet air-out direction is bent along spiral case
The tangential direction of line is bilateral air-out and is all counterclockwise.
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| CN201610681603.1A CN106089805B (en) | 2016-08-18 | 2016-08-18 | A kind of air flow drive device of air purifier |
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| CN201610681603.1A CN106089805B (en) | 2016-08-18 | 2016-08-18 | A kind of air flow drive device of air purifier |
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| WO2020233471A1 (en) * | 2019-05-23 | 2020-11-26 | 青岛海尔滚筒洗衣机有限公司 | Centrifugal fan and clothing dryer |
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| Publication number | Publication date |
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| CN106089805B (en) | 2018-11-30 |
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