CN205478383U - Double suction centrifugal fan and air purifier - Google Patents
Double suction centrifugal fan and air purifier Download PDFInfo
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- CN205478383U CN205478383U CN201620251768.0U CN201620251768U CN205478383U CN 205478383 U CN205478383 U CN 205478383U CN 201620251768 U CN201620251768 U CN 201620251768U CN 205478383 U CN205478383 U CN 205478383U
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- 238000001914 filtration Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 11
- 238000004887 air purification Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 1
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- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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Abstract
An embodiment of the utility model provides a double suction centrifugal fan and air purifier relates to air purifier's technical field, and for air purifier intake in solving prior art is little, efficiency of air purification is not high, the noise big, easy damage and the higher problem of cost and invent. A double suction centrifugal fan, includes the impeller, the impeller includes wheel hub and sets up respectively in two bladings of wheel hub both sides, wheel hub is connected with the motor, the blading includes a plurality of blades along wheel hub border align to grid, works as during rotating impeller, the blading of wheel hub both sides can be followed respectively wheel hub's axial is induced drafted, and follows wheel hub's radial air supply. The utility model is used for air -purifying.
Description
Technical field
This utility model relates to the technical field of air cleaning facility, particularly relate to a kind of double suction from
Heart-wind syndrome machine and air purifier.
Background technology
Along with the development of industrial technology, the development of science and technology, the Living Water of people
Flat also improving constantly, but, the environmental problem brought due to excessive development industrial technology is also
The most serious.For the air quality in bettering people's living environment, technical staff have devised can
Purify the equipment of air, and gradually derive Household Air Purifier and business air purification
The products such as device.The power of commercial air purifier is relatively big, and air purification efficiency is higher, but due to
The problems such as its volume is relatively big and noise is higher, thus be used in the larger space environment such as Factory Building.
And Household Air Purifier possesses the advantages such as volume is little, noise is low, it is used for office or house
Etc. in small space.
Household Air Purifier the most on the market, uses single admission more, and from inlet side
Mode to side air-out, the air purifier of this structure in use can be directly blown onto use
Family, the healthy generation infringement to user, if but being placed on the air purifier of this structure
In the corners such as corner, the air intake of air purifier or air-out can be produced impact again, be unfavorable for sky
Gas purifies.For solving this problem, the blower fan within air purifier is changed into by technical staff
Centrifugal blower, air, in rotation process, is pumped to sky along its axial direction by centrifugal blower
Filtering inside gas purifier, the pure air formed after then filtering radially send
Go out so that air purifier is from side air intake, from top air-out, will not be direct during use
Blow to user, will not be to the healthy generation infringement of user.
But, this single admission the air purifier from top air-out, within the unit interval
Air purification efficiency the highest, and centrifugal blower in use to there will be motion imbalance existing
As, centrifugal blower when rotated, due to this centrifugal blower only side air intake so that centrifugal blower only exists
There are stress, centrifugal blower discontinuity in inlet side, and then causes centrifugal blower eccentric rotary, causes
The problem that the intake of centrifugal blower is low and noise is high, centrifugal blower occurs motion imbalance for a long time
Phenomenon can cause centrifugal blower to damage, even motor damage.If but in the both sides of air purifier
It is mounted on centrifugal blower, although the purification efficiency of this air purifier can be increased, but can increase
Add cost, and the vibrations and the noise that produce when two centrifugal blowers work very big simultaneously, vibrations
Cross conference and affect the stability of air purifier, easily make air purifier damage, and noise mistake
The conference healthy generation relatively macrolesion to user, it is impossible to use in office or house et al.
In the small space that mouth is the most intensive.
Utility model content
Embodiment of the present utility model provides a kind of double-suction centrifugal fan and air purifier, this pair
The intake of suction centrifugal blower and air purifier is big, noise is little, the most easily damaged and cost is the highest.
For reaching above-mentioned purpose, embodiment of the present utility model adopts the following technical scheme that
A kind of double-suction centrifugal fan, including impeller, described impeller includes wheel hub and is respectively provided with
In two vane group of wheel hub both sides, described wheel hub connects has motor, described vane group to include many
Individual along Hub side along evenly distributed blade, when described wheel rotation, described wheel hub both sides
Vane group respectively along the axial air draught of described wheel hub, and can be blown along the radial direction of described wheel hub.
A kind of air purifier, including housing, the opposite sides of the sidewall of described housing be provided with into
Air port, the top of described housing is provided with air outlet, is provided with double suction as above in described housing
Centrifugal blower, two air inlet through hollow shaft sides of described double-suction centrifugal fan respectively with the two of described housing
Individual air inlet is relative, the radial direction air side of described double-suction centrifugal fan and the air outlet of described housing
Relatively, it is respectively equipped with air between described double-suction centrifugal fan and two air inlets of described housing
Screen modules.
Compared to prior art, the double-suction centrifugal fan that this utility model embodiment provides is in work
Time, the both sides of impeller all can substantially increase this double-suction centrifugal fan along the axial air draught of wheel hub
Intake, simultaneously as this double-suction centrifugal fan work time, the both sides of its impeller are all subject to
Power, thus do not have motion energy imbalance so that this double-suction centrifugal fan is the most not
Can produce the phenomenon of eccentric rotary, thus not have that noise is high, electricity is even burnt in blower fan damage
The problem of machine.And although this double-suction centrifugal fan adds an inlet side, but the sum of blower fan
Constant, the most excessively high increase its production cost, during use, also do not have excessive vibrations,
This double-suction centrifugal fan will not be damaged.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art,
The accompanying drawing used required in embodiment or description of the prior art will be briefly described below,
It should be evident that the accompanying drawing in describing below is only embodiments more of the present utility model, right
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
The of the impeller of a kind of double-suction centrifugal fan that Fig. 1 provides for this utility model embodiment
A kind of axonometric chart of detailed description of the invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the partial enlarged drawing of Fig. 2；
The of the impeller of a kind of double-suction centrifugal fan that Fig. 4 provides for this utility model embodiment
A kind of blade profile of the blade of detailed description of the invention；
The of the impeller of a kind of double-suction centrifugal fan that Fig. 5 provides for this utility model embodiment
The axonometric chart of two kinds of detailed description of the invention；
Fig. 6 is the top view of Fig. 5；
Fig. 7 is the partial enlarged drawing of Fig. 6；
The of the impeller of a kind of double-suction centrifugal fan that Fig. 8 provides for this utility model embodiment
The blade profile of the blade of two kinds of detailed description of the invention；
The axonometric chart of a kind of air purifier that Fig. 9 provides for this utility model embodiment；
The explosive view of a kind of air purifier that Figure 10 provides for this utility model embodiment；
A kind of air purifier that Figure 11 provides for this utility model embodiment is along its center axis
Sectional view.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, in this utility model embodiment
Technical scheme be clearly and completely described, it is clear that described embodiment be only this
The a part of embodiment of utility model rather than whole embodiments.Based in this utility model
Embodiment, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly falls into the scope of this utility model protection.
In description of the present utility model, it is to be understood that term " " center ", " on ",
D score, "front", "rear", "left", "right", " vertically ", " level ", " top ",
The orientation of the instruction such as " end ", " interior ", " outward " or position relationship be based on orientation shown in the drawings or
Position relationship, is for only for ease of description this utility model and simplifies description rather than instruction or hint institute
Refer to device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not
It is interpreted as restriction of the present utility model.
In description of the present utility model, it should be noted that unless otherwise clear and definite regulation and limit
Fixed, term " is installed ", " being connected ", " connection " should be interpreted broadly, for example, it may be consolidate
Fixed connection, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected；Can be
It is joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.
For the ordinary skill in the art, can understand that above-mentioned term is new in this practicality with concrete condition
Concrete meaning in type.
Air cleaning facility operationally, by the centrifugal blower within driven by motor air cleaning facility
Rotate, thus the air near this air cleaning facility is constantly sucked inside it, then by being arranged on
The air filtration that defecator within air cleaning facility will be inhaled into, is allowed to form clean sky
Gas, finally sends the air that this part is clean, thus reaches to purify the purpose of air.
Embodiment 1
A kind of double-suction centrifugal fan of this utility model embodiment offer, as shown in Figures 1 to 4,
Including impeller 1, impeller 1 includes wheel hub 2 and is respectively arranged at two leaves of wheel hub 2 both sides
Sheet group 3, wheel hub 2 connect have motor 21, vane group 3 to include multiple edge along wheel hub 2 is equal
The blade 31 of even arrangement, when impeller 1 rotates, the vane group 3 of wheel hub 2 both sides can be distinguished
Along the axial air draught of wheel hub 2, and along the radial direction air-supply of wheel hub 2.
Compared to prior art, the double-suction centrifugal fan that this utility model embodiment provides is in work
Time, the both sides of impeller 1 all can substantially increase this double-suction centrifugal pump along the axial air draught of wheel hub 2
The intake of blower fan, simultaneously as during the work of this double-suction centrifugal fan, the both sides of its impeller 1
All there is stress, thus do not have motion energy imbalance so that this double-suction centrifugal fan is in fortune
The phenomenon of eccentric rotary will not be produced when turning, thus do not have noise height, blower fan damage even
The problem of motor damage.And although this double-suction centrifugal fan adds an inlet side, but blower fan
Sum constant, the most excessively high increase its production cost, also do not have excessive during use
Vibrations, will not damage this double-suction centrifugal fan.
Wind for avoiding the both sides of this double-suction centrifugal fan to enter interferes, and produces noise, as
Shown in Fig. 1 and Fig. 2, wheel hub 2 is set to the disc-shaped structure closed, middle part and motor 21
Drive shaft be tightly connected.When motor 21 drive hub 2 rotates, arrange on the hub 2
Blade 31 rotates with wheel hub 2, thus drives the air rotation product being positioned near blower fan inlet side
Raw suction, will be located in the air near blower fan inlet side and sucks inside this double-suction centrifugal fan.When
Blade 31 is circular arc laminated structure, and when blade 31 is perpendicular to the surface configuration of wheel hub 2,
This double-suction centrifugal fan during the air of suction is sent along the radial direction of wheel hub 2, air
All the time along the Surface runoff of blade 31 so that this double-suction centrifugal fan is suffered when air-supply
Resistance is minimum, thus the impact produced is less, and noise is the highest, and air-supply efficiency is high, air quilt
After sending, this double-suction centrifugal fan negative pressure produced by wheel hub 2 is relatively big, to neighbouring sky
The suction that gas produces reaches maximum.
For improving the intake of this double-suction centrifugal fan, as in figure 2 it is shown, the internal diameter of impeller 1 is
d1And outer diameter D1Ratio in the range of 0.70～0.75.When impeller 1 rotates, axially will along it
Air near blower fan inlet side sucks inside it, then along the radial direction of wheel hub 2 by air from phase
Space between adjacent two blades 31 is sent.When the internal diameter of impeller 1 is d1And outer diameter D1Ratio
When value is less than 0.70, the volume of blade 31 is excessive, and then causes the inner space of impeller 1 relatively
Little, when blade 31 rotates with wheel hub 2, the amount of the air of suction is also little, reduces this pair
Inhale the intake of centrifugal blower；And when the internal diameter of impeller 1 is d1And outer diameter D1Ratio be more than
When 0.75, the volume of blade 31 is too small, and blade 31 is produced suction when rotating with wheel hub 2
Less, the intake of this double-suction centrifugal fan is the highest.
For guarantee this double-suction centrifugal fan rotate time, the both sides stress size of wheel hub 2 is identical,
As depicted in figs. 1 and 2, the quantity phase of the blade 31 of the vane group 3 of wheel hub 2 both sides it is positioned at
Deng and be symmetrical arranged relative to wheel hub 2, this makes this double-suction centrifugal fan operationally, two
The total amount of the air that inlet side is sucked is identical, thus the size of power that the both sides of wheel hub 2 are subject to
The most identical, and the power suffered by the both sides of wheel hub 2 is in opposite direction so that this double-suction centrifugal pump wind
Power suffered by machine reaches dynamic equilibrium state, does not haves the situation of impeller eccentric rotary.Meanwhile,
The number that will be located in the blade 31 in each vane group 3 of wheel hub 2 both sides is set to 29～41.
When the number of blade 31 is less than 29, the spacing between adjacent two blades is relatively big, blade 31 with
The suction produced in wheel hub 2 rotation process is little, affects the intake of this double-suction centrifugal fan.
And to blade 31 number more than 41 time, the spacing between adjacent two blades is too small, air edge
The resistance suffered when radially flowing out of wheel hub 2 is relatively big, is unfavorable for going out of this double-suction centrifugal fan
Wind.And the number of preferred blade 31 is odd number, when the number of blade 31 is odd number, blade is not
It is easily generated resonance, and noise is lower, rotate more steady so that this double-suction centrifugal fan is rotating
Time the noise that produces less, because damaging without the health of user is produced.
For ensureing intake and the air output of this double-suction centrifugal fan, as it is shown on figure 3, blade
31 near the air intake limit that edge is blade 31 in the center of circle of the wheel hub 2 of this double-suction centrifugal pump fan,
The air intake limit of blade 31 and the stagger angle α that angle is blade 31 of its tangent line1, blade
Stagger angle α1Span be 20 °～30 °.Owing to the import of blade 31 is installed
Angle α1Angle less, this make by this double-suction centrifugal fan be pumped to inside air relatively hold
Easily flow to the surface of blade 31, thus be conducive to the air-out of this double-suction centrifugal pump fan, and by
Rotated with wheel hub 2 before air is on the surface flowing to blade 31, thus the sky rotated
Gas easily produces eddy current with blade 31 when contacting, as the stagger angle α of blade 311's
When angular range is between 20 °～30 °, it is possible to reduce generation whirlpool at the air intake limit of blade 31
The probability of stream.And if the stagger angle α of blade1Angle less than 20 ° time, blade 31
Air intake limit almost parallel with its tangent line, be unfavorable for that air flows on the surface of blade 31；
And if the stagger angle α of blade1Angle more than 30 ° time, air is flowing to blade 31
Upper surface time relatively big to the impact between blade 31, can produce certain noise, and easily
Produce eddy current, affect intake and the air output of this double-suction centrifugal fan.
The blade 31 edge at the outer edge of the wheel hub 2 of this double-suction centrifugal pump fan is leaf
The air-out edge of sheet 31, the air-out edge of blade 31 and the angle of its tangent line are the outlet of blade 31
Angle beta is installed1, the exit installation angle β of blade 311Span be 65 °～80 °.Blade
The exit installation angle β of 311Angle relatively big, this makes air flow on the surface along blade 31
It is accelerated time dynamic, it is easier to be sent so that the air-out of this double-suction centrifugal fan is the most smooth.
And this double-suction centrifugal fan is during sending the air of suction along the radial direction of wheel hub 2, empty
Gas is bigger along the Surface runoff of blade 31 to the flow velocity of air during the air-out edge of blade 31 so that
Air to send efficiency higher, it is negative that this double-suction centrifugal fan is more prone at wheel hub 2
Pressure, the suction producing neighbouring air reaches maximum, increases the air intake of this double-suction centrifugal fan
Amount.If the exit installation angle β of blade 311Angle less than 65 °, this double-suction centrifugal fan
Air-out inefficient；And if the exit installation angle β of blade 311Angle more than 80 °,
The resistance that air is subject to when along the Surface runoff of blade 31 to the air-out edge of blade 31 is relatively big,
Easily produce eddy current, affect air-out.
For making blade 31 more successfully to send entering the air within this double-suction centrifugal fan
Going out, as shown in Figure 4, the thickness of blade 31 is referred to as the blade profile thickness P of blade 311, blade
Blade profile length Q of a length of blade 31 between 31 two ends1, the air intake limit of blade 31 is arranged
For arc structure, the radius of this arc structure is referred to as the leading-edge radius R of blade 311.Blade 31
Blade profile thickness P1Determine blade 31 and resist the energy of the impact that the air of high speed rotating brings
Power, if the blade profile thickness P of blade 311Too small, the air of high speed rotating is connecing with blade 31
When touching, it is possible to cause blade 31 to ftracture even and rupture.Blade profile length Q of blade 311Right
Air has an impact along the speed of the Surface runoff of blade 31, when blade profile length Q of blade 311
Long, then air can be caused longer in the time of the Surface runoff of blade 31, flow velocity is relatively low,
It is unfavorable for the outflow of air；And if blade profile length Q of blade 311Too short, air is at blade
On the surface of 31, flowing time is shorter, and flow direction changes more unexpected, can cause certain
Impact, produces bigger noise, and influences whether the service life of blade 31.Blade 31
Leading-edge radius R1The table of blade 31 it is flow to for enabling the air rotated vertically to be easier to
On face.Research according to technical staff draws, at P1、Q1And R1Meet (P1: Q1:
R1)=(1:14～16:1.6～1.8) this proportionate relationship time, sending of this double-suction centrifugal fan
Wind efficiency is higher, and the impact that blade 31 is produced by air rotation is less, this double-suction centrifugal pump wind
Noise during machine operating is less.
Preferably, P is worked as1、Q1And R1Meet following proportionate relationship: (P1: Q1: R1)=
(1:15:1.76) time, it is possible to air-supply efficiency when making this double-suction centrifugal fan operate is the highest,
And air rotates the impact minimum producing blade 31 so that during the operating of this double-suction centrifugal fan
Noise minimum.
Embodiment 2
Double-suction centrifugal fan described in the present embodiment, its structure is substantially the same manner as Example 1, district
It is not that the parameter of the impeller of double-suction centrifugal fan in the present embodiment is different, as shown in Figure 6, leaf
The external diameter of wheel 10 is D2, the internal diameter of impeller 10 is d2, d2/D2Span be 0.82～0.88.
When impeller 10 rotates, axially the air near blower fan inlet side is sucked inside it, so along it
Air space between adjacent two blades 301 is sent by the radial direction of tailing edge wheel hub 20.Work as leaf
The internal diameter of wheel 10 is d2And outer diameter D2Ratio less than 0.82 time, the volume mistake of blade 301
Greatly, and then cause the inner space of impeller 10 less, when blade 301 rotates with wheel hub 2,
The amount of the air sucked is also little, reduces the intake of this double-suction centrifugal fan；And work as impeller
The internal diameter of 10 is d2And outer diameter D2Ratio more than 0.88 time, the volume of blade 301 is too small,
Blade 301 when rotating with wheel hub 2 produced suction less, the air intake of this double-suction centrifugal fan
Measure the highest.
For guarantee this double-suction centrifugal fan rotate time, the both sides stress size of wheel hub 20 is identical,
As shown in Figure 5 and Figure 6, the quantity phase of the blade 301 of the vane group 30 of the both sides of wheel hub 20
Deng and be symmetrical arranged relative to wheel hub 20, this makes this double-suction centrifugal fan operationally, two
The total amount of the air that individual inlet side is sucked is identical, thus the power that is subject to of the both sides of wheel hub 20
Size is the most identical, and the power suffered by the both sides of wheel hub 20 is in opposite direction so that this double suction
Power suffered by centrifugal blower reaches dynamic equilibrium state, does not haves impeller 10 eccentric rotary
Situation.Meanwhile, will be located in the number of blade 301 in each vane group 30 of wheel hub 20 both sides
Mesh is set to 55～79.When the number of blade 301 is less than 55, between adjacent two blades 301
Spacing relatively big, blade 301 is little with the suction produced in wheel hub 20 rotation process, impact
The intake of this double-suction centrifugal fan.And to blade 301 number more than 79 time, adjacent two
Spacing between blade is too small, air along wheel hub 20 resistance suffered when radially flowing out relatively
Greatly, the air-out of this double-suction centrifugal fan it is unfavorable for.And the number of preferred blade 301 is odd number,
When the number of blade 301 is odd number, blade is not likely to produce resonance, and noise is lower, rotates more
Steadily so that this double-suction centrifugal fan rotate time produce noise less, because of without to
The health at family produces damage.
For ensureing intake and the air output of this double-suction centrifugal fan, as it is shown in fig. 7, blade
301 air intakes that edge is blade 301 near the center of circle of the wheel hub 20 of this double-suction centrifugal pump fan
The stagger angle α that angle is blade 301 of limit, the air intake limit of blade 301 and its tangent line2,
The stagger angle α of blade2Span be 10 °～20 °.The import peace of blade 301
Dress angle α2Angle less, this make by this double-suction centrifugal fan be pumped to inside air relatively
Easily flow to the surface of blade 301, thus be conducive to the air-out of this double-suction centrifugal pump fan, and
Due to air on the surface flowing to blade 301 before be as what wheel hub 20 carried out rotating,
Thus the air rotated easily produces eddy current with blade 301, when entering of blade 301 when contacting
Mouth established angle α2Angular range between 10 °～20 ° time, it is possible to reduce blade 301
The probability of eddy current is produced at air intake limit.And if the stagger angle α of blade2Angle be less than
When 10 °, the air intake limit of blade 301 is almost parallel with its tangent line, is unfavorable for that air is to blade
Flow on the surface of 301；And if the stagger angle α of blade2Angle more than 20 ° time,
Air is relatively big to the impact between blade 301 when flowing to the upper surface of blade 301, can produce
Raw certain noise, and easily produce eddy current, affect the intake of this double-suction centrifugal fan and go out
Air quantity.
For ensureing intake and the air output of this double-suction centrifugal fan, as it is shown in fig. 7, blade
301 edges at the outer edge of the wheel hub 20 of this double-suction centrifugal pump fan are blade 301
Air-out edge, the air-out edge of blade 301 and the angle of its tangent line are the exit installation angle of blade 301
β2, the exit installation angle β of blade 3012Span be 55 °～65 °.Blade 301
Exit installation angle β2Angle relatively big, this makes air in the Surface runoff along blade 301
Time accelerated, it is easier to be sent so that the air-out of this double-suction centrifugal fan is the most smooth.And
This double-suction centrifugal fan is during sending the air of suction along the radial direction of wheel hub 20, empty
Gas is relatively big along the Surface runoff of blade 301 to the flow velocity of air during the air-out edge of blade 301, makes
Air to send efficiency higher, this double-suction centrifugal fan is more prone at wheel hub 20
Negative pressure, the suction producing the air near blower fan inlet side reaches maximum, increases this pair
Inhale the intake of centrifugal blower.If the exit installation angle β of blade 3012Angle less than 55 °,
The air-out of this double-suction centrifugal fan is inefficient；And if the exit installation angle β of blade 3012's
Angle is more than 65 °, and air is along the Surface runoff of blade 301 to the air-out edge of blade 301
Time the resistance that is subject to relatively big, easily produce eddy current, affect air-out.
For making blade 301 more successfully can will enter the air within this double-suction centrifugal fan
Sending, as shown in Figure 8, the thickness of blade 31 is referred to as the blade profile thickness P of blade 3012, leaf
Blade profile length Q of a length of blade 301 between sheet 301 two ends2, the air intake of blade 301
While be set to arc structure, the radius of this arc structure is referred to as the leading-edge radius R of blade 3012。
The blade profile thickness P of blade 3012Determine blade 301 and resist what the air of high speed rotating brought
The ability of impact, if the blade profile thickness P of blade 3012Too small, the air of high speed rotating with
When blade 301 contacts, it is possible to cause blade 301 to ftracture even and rupture.The leaf of blade 301
Type length Q2Air is had an impact along the speed of the Surface runoff of blade 301, when blade 301
Blade profile length Q2Long, then can cause air the Surface runoff of blade 301 time relatively
Long, flow velocity is relatively low, is unfavorable for the outflow of air；And if blade profile length Q of blade 3012Cross
Short, air flowing time on the surface of blade 301 is shorter, and flow direction changes more unexpected,
Certain impact can be caused, produce bigger noise, and influence whether the use longevity of blade 301
Life.The leading-edge radius R of blade 3012For enabling the air rotated vertically to be easier to stream
Move on the surface of blade 301.Research according to technical staff draws, at P2、Q2With
R2Meet (P2: Q2: R2)=(1:5～8:0.8～1.2) this proportionate relationship time, this pair
The air-supply efficiency inhaling centrifugal blower is higher, and air rotates the impact producing blade 301 relatively
Little, the noise during operating of this double-suction centrifugal fan is less.
Preferably, P is worked as2、Q2And R2Meet following proportionate relationship: (P2: Q2: R2)=
(1:5.78:0.93) time, it is possible to air-supply efficiency when making this double-suction centrifugal fan operate is the highest,
And air rotates the impact minimum producing blade 301 so that during the operating of this double-suction centrifugal fan
Noise minimum.
Embodiment of the present utility model also provides for a kind of air purifier, such as Fig. 9 to Figure 11 institute
Showing, including housing 400, the opposite sides of the sidewall of housing 400 is provided with air inlet 401, shell
The top of body 400 is provided with air outlet 402, is provided with above-described embodiment 1 or implements in housing 400
Double-suction centrifugal fan described in example 2, two air inlet through hollow shaft sides of double-suction centrifugal fan respectively with
Two air inlets 401 of housing 400 are relative, the radial direction air side of double-suction centrifugal fan and housing
The air outlet 402 of 400 is relative, double-suction centrifugal fan and two air inlets 401 of housing 400
Between be respectively equipped with air filtration screen component.
Compared to prior art, air purifier of the present utility model in use, due to
It possesses two air inlets 401 so that the intake of this air evolution device is greatly increased, and two
It is provided with air filtration screen component so that should between individual air inlet 401 and double-suction centrifugal fan
The purification efficiency of air purifier is greatly promoted.And owing to its air outlet 402 is arranged on housing
The top of 400, from air outlet 402 blowout wind will not be directly blown onto user, because of without
Healthy to user causes damage.This air purifier after a long time use, also will not
The phenomenon of centrifugal blower eccentric rotary occur, noise is little and service life is longer.
For increasing the clean-up effect of this air purifier, air filtration screen component include being arranged at into
Coarse filtration net at air port 401 and being arranged between coarse filtration net and double-suction centrifugal fan
HEPA net (high-efficiency air filtering net) 500.Outside air is being sucked up to this air cleaning
Time in device, it is initially located at the coarse filtration net filtration at air inlet 401, will air carry
Bulky grain micronic dust filter and absorb, air is arranged between coarse filtration net and blower fan 2 flowing through
Filtered further by HEPA net 500 during HEPA net 500.HEPA net 500 is to a diameter of
The particle removal efficiency of more than 0.3 micron can reach more than 99.7%, be smog, dust and
The maximally effective filtering medium of the pollutant such as antibacterial, air is to sequentially pass through this two-layer drainage screen laggard
Enter in double-suction centrifugal fan, double-suction centrifugal fan this part formed after filtering is clean empty
Gas is sent in external environment via air outlet 402.
The above, detailed description of the invention the most of the present utility model, but guarantor of the present utility model
The scope of protecting is not limited thereto, and any those familiar with the art is at this utility model
In the technical scope disclosed, change can be readily occurred in or replace, all should contain at this utility model
Protection domain within.Therefore, protection domain of the present utility model should be with described claim
Protection domain is as the criterion.
Claims (12)
1. a double-suction centrifugal fan, it is characterised in that include that impeller, described impeller include wheel
Hub and be respectively arranged at two vane group of wheel hub both sides, described wheel hub connects motor, institute
State vane group and include multiple along Hub side along evenly distributed blade, when described wheel rotation,
The vane group of described wheel hub both sides can be respectively along the axial air draught of described wheel hub, and along described wheel hub
Radial direction air-supply.
Double-suction centrifugal fan the most according to claim 1, it is characterised in that described wheel hub
For the disc-shaped structure closed, described blade is circular arc laminated structure, and described blade is perpendicular to
The surface configuration of described wheel hub.
Double-suction centrifugal fan the most according to claim 2, it is characterised in that described impeller
External diameter be D1, the internal diameter of impeller is d1, d1/D1Span be 0.70～0.75.
Double-suction centrifugal fan the most according to claim 3, it is characterised in that described wheel hub
The vane group blade quantity of both sides is equal and is symmetrical arranged relative to described wheel hub, each described leaf
Sheet group includes 29～41 blades, and the number of blade is odd number.
Double-suction centrifugal fan the most according to claim 4, it is characterised in that described blade
Stagger angle be 20 °～30 °, the exit installation angle of described blade is 65 °～80 °.
Double-suction centrifugal fan the most according to claim 5, it is characterised in that described blade
Blade profile thickness be P1, a length of Q of blade profile1, leading-edge radius is R1, P1、Q1And R1Meet
Following proportionate relationship: (P1: Q1: R1)=(1:15:1.76).
Double-suction centrifugal fan the most according to claim 2, it is characterised in that described impeller
External diameter be D2, the internal diameter of impeller is d2, d2/D2Span be 0.82～0.88.
Double-suction centrifugal fan the most according to claim 7, it is characterised in that described wheel hub
The vane group blade quantity of both sides is equal and is symmetrical arranged relative to described wheel hub, each described leaf
Sheet group includes 55～79 blades, and the number of blade is odd number.
Double-suction centrifugal fan the most according to claim 8, it is characterised in that described blade
Stagger angle be 10 °～20 °, the exit installation angle of described blade is 55 °～65 °.
Double-suction centrifugal fan the most according to claim 9, it is characterised in that described leaf
The blade profile thickness of sheet is P2, a length of Q of blade profile2, leading-edge radius is R2, P2、Q2And R2Full
Be enough to lower proportionate relationship: (P2: Q2: R2)=(1:5.78:0.93).
11. 1 kinds of air purifiers, it is characterised in that include housing, the sidewall of described housing
Opposite sides be provided with air inlet, the top of described housing is provided with air outlet, sets in described housing
Have the right the double-suction centrifugal fan according to any one of requirement 1～10, described double-suction centrifugal fan
Two air inlet through hollow shaft sides are relative with the two of described housing air inlets respectively, described double-suction centrifugal pump wind
The radial direction air side of machine is relative with the air outlet of described housing, and described double-suction centrifugal fan is with described
It is respectively equipped with air filtration screen component between two air inlets of housing.
12. air purifiers according to claim 11, it is characterised in that described air
Screen modules includes the coarse filtration net being arranged at described air inlet and is arranged at described coarse filtration
HEPA net between net and double-suction centrifugal fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620251768.0U CN205478383U (en) | 2016-03-29 | 2016-03-29 | Double suction centrifugal fan and air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620251768.0U CN205478383U (en) | 2016-03-29 | 2016-03-29 | Double suction centrifugal fan and air purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205478383U true CN205478383U (en) | 2016-08-17 |
Family
ID=56647943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620251768.0U Expired - Fee Related CN205478383U (en) | 2016-03-29 | 2016-03-29 | Double suction centrifugal fan and air purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205478383U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626555A (en) * | 2016-03-29 | 2016-06-01 | 海信（山东）空调有限公司 | Double-suction centrifugal fan and air purifier |
| CN107726445A (en) * | 2017-07-24 | 2018-02-23 | 浙江绍兴苏泊尔生活电器有限公司 | Wind wheel and purifier with same |
| CN108014545A (en) * | 2016-11-03 | 2018-05-11 | 金华市乾元机械制造有限公司 | A kind of dedusting and purifying device |
| CN108374795A (en) * | 2018-02-24 | 2018-08-07 | 西安交通大学 | A kind of two-way multi-wing centrifugal fan formula air interchanger of double-entry and its working method |
-
2016
- 2016-03-29 CN CN201620251768.0U patent/CN205478383U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626555A (en) * | 2016-03-29 | 2016-06-01 | 海信（山东）空调有限公司 | Double-suction centrifugal fan and air purifier |
| CN108014545A (en) * | 2016-11-03 | 2018-05-11 | 金华市乾元机械制造有限公司 | A kind of dedusting and purifying device |
| CN107726445A (en) * | 2017-07-24 | 2018-02-23 | 浙江绍兴苏泊尔生活电器有限公司 | Wind wheel and purifier with same |
| CN108374795A (en) * | 2018-02-24 | 2018-08-07 | 西安交通大学 | A kind of two-way multi-wing centrifugal fan formula air interchanger of double-entry and its working method |
| CN108374795B (en) * | 2018-02-24 | 2019-08-23 | 西安交通大学 | A kind of two-way multi-wing centrifugal fan formula air interchanger of double-entry and its working method |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 |
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| CF01 | Termination of patent right due to non-payment of annual fee |