CN208935011U - Centrifugal fan blade, centrifugal fan and air conditioner - Google Patents
Centrifugal fan blade, centrifugal fan and air conditioner Download PDFInfo
- Publication number
- CN208935011U CN208935011U CN201821735502.9U CN201821735502U CN208935011U CN 208935011 U CN208935011 U CN 208935011U CN 201821735502 U CN201821735502 U CN 201821735502U CN 208935011 U CN208935011 U CN 208935011U
- Authority
- CN
- China
- Prior art keywords
- blade
- centrifugation
- centrifuge
- wheel
- centrifugation blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005119 centrifugation Methods 0.000 claims abstract description 75
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 238000001746 injection moulding Methods 0.000 claims description 4
- 241001582888 Lobus Species 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a centrifugation fan blade, centrifugal fan and air conditioner. The centrifugal fan blade comprises a wheel disc (1) and a first wheel hub (2), wherein a first centrifugal blade (3) is fixedly arranged on the outer peripheral side of the wheel disc (1) along the circumferential direction, the first wheel hub (2) is fixedly arranged on the wheel disc (1) and is positioned on the inner peripheral side of the first centrifugal blade (3), a second centrifugal blade (4) is arranged at the air inlet end of the first wheel hub (2), and the second centrifugal blade (4) is positioned on the inner peripheral side of the first centrifugal blade (3). According to the utility model discloses a centrifugation fan blade can effectively increase the airflow strength of fan blade front bezel, avoids taking place the air current phenomenon of resorption.
Description
Technical field
The utility model belongs to blower technical field, and in particular to a kind of centrifugation blade, centrifugal blower and air conditioner.
Background technique
Conventional multi-wing centrifugal fan blade, such as patent CN205533411U, during operation, fan blade shroud vicinity air-flow is strong
Degree is insufficient, and air-flow is powerful at fan blade hub disk.Since hub disk air-flow is powerful, shroud air-flow is weaker, therefore pressure difference easy to form, leads
Causing air-flow, there is a phenomenon where resorptions.
Air-flow resorption is idle work, on the one hand reduces fan blade pneumatic efficiency, the air-flow and air inlet gas of another aspect resorption
Stream interferes with each other, and can also generate vortex noise.
To improve fan blade efficiency, patent CN105258227A uses the scheme that axis stream is combined with centrifugation blade.It is such
Fan blade production technology is complicated, and assembly process is more, higher cost.Meanwhile it is air inlet through hollow shaft that the fan blade is practical, axial and circumferential go out
Wind is not suitable for centrifugation blade occasion (requiring the occasion of air inlet through hollow shaft, circumferential outlet air) although air output increases.
Partial monopoly such as CN203879801U, using double centrifugation blade structures.Although such scheme is able to ascend air output,
But it can not solve the problems, such as that air-flow is weaker at centrifugation blade shroud from the root, and double centrifugation blade structures increase manufacture work
Skill difficulty, it is at high cost, while the overall thickness of fan blade is also increased, size is larger, limits use occasion.
Utility model content
Therefore, the technical problem to be solved by the present invention is to provide a kind of centrifugation blade, centrifugal blower and air conditioner,
The current rate that fan blade shroud can be effectively increased avoids that air-flow resorption phenomenon occurs.
To solve the above-mentioned problems, the utility model provides a kind of centrifugation blade, including wheel disc and first wheel, wheel disc
Peripheral side is circumferentially fixedly installed the first centrifuge blade, and first wheel is fixed on wheel disc, and is located at the first centrifugation leaf
The inner circumferential side of piece, the air intake of first wheel are provided with the second centrifuge blade, and the second centrifuge blade is located at the first centrifuge blade
Inner circumferential side.
Preferably, the second wheel hub is fixedly installed on the air intake end face of first wheel, the second centrifuge blade is along the second wheel
The peripheral side of hub is circumferentially arranged.
Preferably, first wheel and the second hub welding is fixed or integrated injection molding.
Preferably, the first centrifuge blade and the second centrifuge blade rotate synchronously.
Preferably, projection of second centrifuge blade on the central axis of centrifugation blade is located at the first centrifuge blade and is being centrifuged
In drop shadow spread on the central axis of fan blade.
Preferably, the relationship between the quantity N2 of the second centrifuge blade and the quantity N1 of the first centrifuge blade meets: N2/N1
=1/12~1/3.
Preferably, N2/N1=1/5.
Preferably, meet between the outer blade diameter φ 2 of the second centrifuge blade and the outer blade diameter φ 1 of the first centrifuge blade:
2/ 1=0.4~0.5 φ φ.
Preferably, 2/ φ 1=0.45 of φ.
Preferably, the relationship between the outer blade diameter φ 2 of the second centrifuge blade and the internal diameter blade φ 3 of the second centrifuge blade
Meet: 3/ 2=0.2~0.4 φ φ.
Preferably, 3/ φ 2=0.25 of φ.
Preferably, meet between the axial height H2 of the second centrifuge blade and the axial height H1 of the first centrifuge blade and want
It asks: H2/H1=0.15~0.25.
Preferably, H2/H1=0.2.
Preferably, the relationship between the axial height H3 of first wheel and the axial height H1 of the first centrifuge blade meets:
H3/H1=0.7~0.8.
Preferably, H3/H1=0.75.
Preferably, the pass between the air intake end face outer diameter φ 4 of first wheel and the outer blade diameter φ 2 of the second centrifuge blade
System meets: 2 >=a of φ 4- φ.
Preferably, a=4~10mm.
Preferably, the peripheral side of the first centrifuge blade is fixedly installed hydrosphere, and hydrosphere is arranged in the first centrifuge blade
Inlet side.
Preferably, axis hole is provided on the second wheel hub.
Preferably, the rotation direction of the first centrifuge blade and the second centrifuge blade is identical
Another aspect according to the present utility model provides a kind of centrifugal blower, including centrifugation blade, which is
Above-mentioned centrifugation blade.
Preferably, centrifugal blower further includes spiral case, and centrifugation blade is arranged in spiral case.
Preferably, air inlet is provided on spiral case, air inlet is provided with baffle liner.
It is according to the present utility model in another aspect, provide a kind of air conditioner, including centrifugation blade, which is upper
The centrifugation blade stated.
Centrifugation blade provided by the utility model, including wheel disc and first wheel, circumferentially fixation is set for the peripheral side of wheel disc
It is equipped with the first centrifuge blade, first wheel is fixed on wheel disc, and is located at the inner circumferential side of the first centrifuge blade, first wheel
Air intake be provided with the second centrifuge blade, the second centrifuge blade is located at the inner circumferential side of the first centrifuge blade, and the first centrifugation leaf
The rotation direction of piece and the second centrifuge blade is identical.Since the air intake in first wheel is provided with the second centrifuge blade, from
Heart fan blade work when, can by the second centrifuge blade increase fan blade operation when fan blade shroud airflow intensity, avoid or
Person, which mitigates, generates pressure difference since forward and backward disk current rate is different, and then the phenomenon that generation resorption, increases air-flow from centrifugation
The discharge of fan blade, to improve the air output of centrifugation blade.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the centrifugation blade of the utility model embodiment；
Fig. 2 is the structural schematic diagram of the centrifugation blade of the utility model embodiment；
Fig. 3 is the schematic cross-sectional view of the centrifugation blade of the utility model embodiment；
Fig. 4 is the structural schematic diagram of the centrifugal blower of the utility model embodiment；
Fig. 5 is the C-C of Fig. 4 to sectional structure chart；
Fig. 6 is the enlarged structure schematic diagram at the A of Fig. 5.
Appended drawing reference indicates are as follows:
1, wheel disc；2, first wheel；3, the first centrifuge blade；4, the second centrifuge blade；5, the second wheel hub；6, hydrosphere；
7, axis hole；8, spiral case；9, baffle liner.
Specific embodiment
In conjunction with referring to shown in Fig. 1 to Fig. 6, embodiment according to the present utility model, centrifugation blade includes wheel disc 1 and the first round
Hub 2, the peripheral side of wheel disc 1 are circumferentially fixedly installed the first centrifuge blade 3, and first wheel 2 is fixed on wheel disc 1, and
Positioned at the inner circumferential side of the first centrifuge blade 3, the air intake of first wheel 2 is provided with the second centrifuge blade 4, the second centrifuge blade 4
Positioned at the inner circumferential side of the first centrifuge blade 3.
It, can in centrifugation blade work due to being provided with the second centrifuge blade 4 in the air intake of first wheel 2
The airflow intensity of fan blade shroud, avoids or mitigates due to forward and backward disk when increasing fan blade operation by the second centrifuge blade 4
Current rate is different and generates pressure difference, and then the phenomenon that generation resorption, increases discharge of the air-flow from centrifugation blade, thus
The air output of centrifugation blade is improved, the idle work of air-flow is reduced, improves fan efficiency.
Further, since air-flow resorption can be avoided effectively, therefore enters the wind air-flow and be no longer influenced by disturbance, it can be smooth along path
Circulation avoids vortex noise and generates, reduces the operation noise of centrifugation blade.
Since the centrifugation blade of the present embodiment need to only increase by the second centrifuge blade 4 in the structure of original centrifugation blade
Structure, therefore manufacture craft is simple, cost is relatively low, it is easy to accomplish produces in enormous quantities.
Preferably, the first centrifuge blade 3 is identical with the rotation direction of the second centrifuge blade 4, can more efficiently improve air-flow
Flow efficiency improves the airflow intensity of fan blade shroud.
The second wheel hub 5 is fixedly installed on the air intake end face of first wheel 2, the second centrifuge blade 4 is along the second wheel hub 5
Peripheral side is circumferentially arranged.It, being capable of more convenient setting for carrying out the second centrifuge blade 4 by the way that the second wheel hub 5 is arranged.Second wheel hub
5 are arranged on the air intake end face of first wheel 2, and extend away from the axial direction of first wheel 2, form cylindrical shaft
Structure, multiple second centrifuge blades 4 are uniformly distributed along the circumferential direction of first wheel 2.
First wheel 2 and the second wheel hub 5 is welded and fixed or integrated injection molding.When first wheel 2 and the second wheel hub 5 weld
When fixed, during being processed, first wheel 2 and the second wheel hub 5 can be separated after being processed, and be welded on one
It rises, can reduce the difficulty of processing of first wheel 2 and the second wheel hub 5, simplify processing technology.When first wheel 2 and the second wheel hub 5
When integrated injection molding, the overall structural strength between first wheel 2 and the second wheel hub 5 can be improved, reduce processing cost.
Preferably, the first centrifuge blade 3 and the second centrifuge blade 4 rotate synchronously, and can further increase centrifugation blade
Outlet air efficiency and air output.
In the present embodiment, projection of second centrifuge blade 4 on the central axis of centrifugation blade is located at the first centrifugation leaf
Piece 3 is in the drop shadow spread on the central axis of centrifugation blade, so that the second centrifuge blade 4 is fully located at the first centrifugation leaf
In piece 3, week of first centrifuge blade 3 from the first centrifuge blade 3 is passed fully through from the air-flow of the second centrifuge blade 4 circumferentially flowed out
To outflow, so that the air-flow of the second centrifuge blade 4 is used to reinforce completely the current rate of the fan blade shroud of the first centrifuge blade 3,
It more efficiently avoids that air-flow resorption phenomenon occurs.
Preferably, the relationship between the quantity N2 of the second centrifuge blade 4 and the quantity N1 of the first centrifuge blade 3 meets: N2/
N1=1/12~1/3.
It is highly preferred that N2/N1=1/5.Above-mentioned blade quantity proportionally determines, when the blade according to determined by ratio
When quantity is not integer, then according to the principle round numbers that rounds up.By setting above-mentioned blade quantity proportionate relationship, Neng Gou
Effective strengthening airflow flow effect while preferably manufacturing cost is obtained, air-flow resorption phenomenon is more efficiently overcome.
Meet between the outer blade diameter φ 2 of second centrifuge blade 4 and the outer blade diameter φ 1 of the first centrifuge blade 3: 2/ φ of φ
1=0.4~0.5.
Preferably, 2/ φ 1=0.45 of φ.When the ratio has got small, air-flow strengthening effect is bad, when the ratio obtains
When excessive, wheel hub circumferential direction diameter dimension is excessive, influences the air-flow air inlet of the first centrifuge blade 3.Ratio is limited to above range
It is interior, then can preferably it overcome the problems, such as above-mentioned.
Relationship between the outer blade diameter φ 2 of second centrifuge blade 4 and the internal diameter blade φ 3 of the second centrifuge blade 4 meets:
3/ 2=0.2~0.4 φ φ.
Preferably, 3/ φ 2=0.25 of φ.By setting the outer blade diameter of the second centrifuge blade 4 and the ratio of internal diameter blade
Relationship can comprehensively consider the relationship between centrifuge blade intensity and air-flow strengthening effect, obtain preferable centrifugation blade mechanism.
It is met the requirements between the axial height H2 of second centrifuge blade 4 and the axial height H1 of the first centrifuge blade 3: H2/
H1=0.15~0.25.
Preferably, H2/H1=0.2, can control in manufacturing cost and air-flow strengthens two aspects and obtains preferable effect.
Relationship between the axial height H3 of first wheel 2 and the axial height H1 of the first centrifuge blade 3 meets: H3/H1
=0.7~0.8.
Preferably, H3/H1=0.75, can control in manufacturing cost and air-flow strengthens two aspects and obtains preferable effect
Fruit.
Relationship between the air intake end face outer diameter φ 4 of first wheel 2 and the outer blade diameter φ 2 of the second centrifuge blade 4 is full
Foot: 2 >=a of φ 4- φ.
In the present embodiment, a=4~10mm.Preferably, a 6mm.By limit first wheel 2 air intake end face with
Relationship between the blade of second centrifuge blade 4 can guarantee that the air intake end face edge of first wheel 2 has enough rounded corners
Space, while may insure the structural strength and mold requirement of first wheel 2.
The peripheral side of first centrifuge blade 3 is fixedly installed hydrosphere 6, hydrosphere 6 be arranged in the first centrifuge blade 3 into
Wind side.Hydrosphere 6 is arranged in along circumferential direction at the air intake outer rim of the first centrifuge blade 3, can effectively fix the first centrifugation
Blade 3, so that the first centrifuge blade 3 has good structural strength and stability.
It is provided with axis hole 7 on second wheel hub 5, the axis hole 7 is for assembling motor shaft.
It is circumferential equably to arrange several second centrifugation leaves at first wheel 2 by using the centrifugation blade of the present embodiment
Piece 4.When blower operates, the second centrifuge blade 4 rotates with acting, goes out wind flow with reinforcing effect to air-flow at shroud.It is logical
It crosses the air-flow strengthened herein and goes out wind flow, blocked air-flow resorption path.
After air-flow resorption path is blocked, on the one hand, air-flow discharge increases, i.e. increase blower air output, due to air-flow
Resorption idle work is no longer done, therefore also improves fan efficiency.On the other hand, after air-flow resorption is blocked, gas is entered the wind at shroud
The no longer disturbed disturbance of stream reduces fan noise total value so as to avoid the generation of vortex noise.
Experimental comparison's test is carried out using the fan blade and conventional multi-wing centrifugal fan blade, under each operating condition revolving speed, air quantity is promoted
10%~20%, improved efficiency 5~12%, noise total value reduces by 1~2.6dB.
Above-mentioned fan blade shroud refers to the height and position near the hydrosphere 6 of the first centrifuge blade 3, conventional multi-wing centrifugal wind
Leaf is also easy to produce airflow reflux phenomenon here.
Above-mentioned fan blade hub disk refers to height and position of first centrifuge blade 3 near wheel disc 1, and air-flow flows at this position
It is powerful.
It, should be from conjunction with to shown in Fig. 6, embodiment according to the present utility model, centrifugal blower includes centrifugation blade referring to fig. 4
Heart fan blade is above-mentioned centrifugation blade.
Centrifugal blower further includes spiral case 8, and centrifugation blade is arranged in spiral case 8.
Air inlet is provided on spiral case 8, air inlet is provided with baffle liner 9.The baffle liner 9 along air-flow flow direction,
Section is successively decreased, so that air-flow forms contraction structure, forms effective guide functions to air-flow.
Embodiment according to the present utility model, air conditioner include centrifugation blade, which is above-mentioned centrifugation blade.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill of the art
For personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with modification.
Claims (24)
1. a kind of centrifugation blade, which is characterized in that including wheel disc (1) and first wheel (2), the peripheral side edge of the wheel disc (1)
Circumferentially fixed to be provided with the first centrifuge blade (3), the first wheel (2) is fixed on the wheel disc (1), and is located at institute
The inner circumferential side of the first centrifuge blade (3) is stated, the air intake of the first wheel (2) is provided with the second centrifuge blade (4), and described
Two centrifuge blades (4) are located at the inner circumferential side of first centrifuge blade (3).
2. centrifugation blade according to claim 1, which is characterized in that solid on the air intake end face of the first wheel (2)
Surely it is provided with the second wheel hub (5), second centrifuge blade (4) is circumferentially arranged along the peripheral side of second wheel hub (5).
3. centrifugation blade according to claim 2, which is characterized in that the first wheel (2) and second wheel hub (5)
It is welded and fixed or integrated injection molding.
4. centrifugation blade according to claim 2, which is characterized in that first centrifuge blade (3) and described second from
Lobus cardiacus piece (4) rotates synchronously.
5. centrifugation blade according to claim 1, which is characterized in that second centrifuge blade (4) is in the centrifugation wind
Projection on the central axis of leaf is located at projection model of first centrifuge blade (3) on the central axis of the centrifugation blade
In enclosing.
6. centrifugation blade according to any one of claim 1 to 5, which is characterized in that second centrifuge blade (4)
Relationship between quantity N2 and the quantity N1 of first centrifuge blade (3) meets: N2/N1=1/12~1/3.
7. centrifugation blade according to claim 6, which is characterized in that N2/N1=1/5.
8. centrifugation blade according to any one of claim 1 to 5, which is characterized in that second centrifuge blade (4)
Meet between outer blade diameter φ 2 and the outer blade diameter φ 1 of first centrifuge blade (3): 2/ 1=0.4~0.5 φ φ.
9. centrifugation blade according to claim 8, which is characterized in that 2/ φ 1=0.45 of φ.
10. centrifugation blade according to any one of claim 1 to 5, which is characterized in that second centrifuge blade (4)
Outer blade diameter φ 2 and second centrifuge blade (4) internal diameter blade φ 3 between relationship meet:
3/ 2=0.2~0.4 φ φ.
11. centrifugation blade according to any one of claim 1 to 5, which is characterized in that 3/ φ 2=0.25 of φ.
12. centrifugation blade according to any one of claim 1 to 5, which is characterized in that second centrifuge blade (4)
Axial height H2 and first centrifuge blade (3) axial height H1 between meet the requirements: H2/H1=0.15~0.25.
13. centrifugation blade according to claim 12, which is characterized in that H2/H1=0.2.
14. centrifugation blade according to any one of claim 1 to 5, which is characterized in that the axis of the first wheel (2)
Meet to the relationship between height H3 and the axial height H1 of first centrifuge blade (3): H3/H1=0.7~0.8.
15. centrifugation blade according to claim 14, which is characterized in that H3/H1=0.75.
16. centrifugation blade according to any one of claim 1 to 5, which is characterized in that the first wheel (2) into
Relationship between wind end end face outer diameter φ 4 and the outer blade diameter φ 2 of second centrifuge blade (4) meets: 2 >=a of φ 4- φ.
17. centrifugation blade according to claim 16, which is characterized in that a=4~10mm.
18. centrifugation blade according to any one of claim 1 to 5, which is characterized in that first centrifuge blade (3)
Peripheral side be fixedly installed hydrosphere (6), the hydrosphere (6) is arranged in the inlet side of first centrifuge blade (3).
19. centrifugation blade according to claim 2, which is characterized in that be provided with axis hole (7) on second wheel hub (5).
20. centrifugation blade according to any one of claim 1 to 5, which is characterized in that first centrifuge blade (3)
It is identical with the rotation direction of second centrifuge blade (4).
21. a kind of centrifugal blower, including centrifugation blade, which is characterized in that the centrifugation blade is any in claim 1 to 20
Centrifugation blade described in.
22. centrifugal blower according to claim 21, which is characterized in that the centrifugal blower further includes spiral case (8), described
Centrifugation blade setting is in the spiral case (8).
23. centrifugal blower according to claim 22, which is characterized in that it is provided with air inlet on the spiral case (8), it is described
Air inlet is provided with baffle liner (9).
24. a kind of air conditioner, including centrifugation blade, which is characterized in that the centrifugation blade is any one of claims 1 to 20
The centrifugation blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821735502.9U CN208935011U (en) | 2018-10-24 | 2018-10-24 | Centrifugal fan blade, centrifugal fan and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821735502.9U CN208935011U (en) | 2018-10-24 | 2018-10-24 | Centrifugal fan blade, centrifugal fan and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208935011U true CN208935011U (en) | 2019-06-04 |
Family
ID=66725961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821735502.9U Active CN208935011U (en) | 2018-10-24 | 2018-10-24 | Centrifugal fan blade, centrifugal fan and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208935011U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026829A (en) * | 2018-10-24 | 2018-12-18 | 珠海格力电器股份有限公司 | Centrifugal fan blade, centrifugal fan and air conditioner |
-
2018
- 2018-10-24 CN CN201821735502.9U patent/CN208935011U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026829A (en) * | 2018-10-24 | 2018-12-18 | 珠海格力电器股份有限公司 | Centrifugal fan blade, centrifugal fan and air conditioner |
| WO2020082913A1 (en) * | 2018-10-24 | 2020-04-30 | 珠海格力电器股份有限公司 | Centrifugal fan blade assembly, centrifugal fan, and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107503958A (en) | A kind of centrifugal blower fan system for range hood | |
| CN102536907A (en) | Air blower for an air conditioner | |
| CN207975029U (en) | Centrifugal blower and dust catcher with it | |
| CN201679745U (en) | Low-noise axial flow fan for cooling air conditioner | |
| CN109611356A (en) | A kind of backward centrifugal blower | |
| CN109899319A (en) | A kind of backward centrifugal wind wheel | |
| CN110319054A (en) | A kind of impeller for forward centrifugal blower | |
| CN109026829A (en) | Centrifugal fan blade, centrifugal fan and air conditioner | |
| WO2007019796A1 (en) | A pressurized axial blower | |
| CN109973410A (en) | A kind of no spiral case centrifugal fan | |
| CN208935011U (en) | Centrifugal fan blade, centrifugal fan and air conditioner | |
| CN210568923U (en) | Novel air purifier | |
| CN110513327B (en) | Diagonal flow fan and household electrical appliance | |
| CN205371033U (en) | Electric locomotive pulls ventilation blower with centrifugal axial compressor | |
| CN105673559B (en) | Efficient meridionally-accelerated axial flow fan with casing | |
| CN106402001B (en) | A kind of blower dynamical system | |
| CN206092475U (en) | Fan driving system | |
| CN108443221A (en) | Centrifugal fan blade and air purification equipment | |
| CN211623815U (en) | Air exhaust centrifugal impeller | |
| CN107965475A (en) | A kind of noise reducing type radial fan | |
| CN201181882Y (en) | Cooling impeller of electric motor | |
| CN110159597A (en) | A kind of cooling device and axial flow blower for steel mill's high-speed rod air-cooled line | |
| CN209261908U (en) | Wind wheel, fan assembly and dryer | |
| CN109779970A (en) | The bionical noise-lowering centrifugal blower of fin shape | |
| CN209228698U (en) | A kind of energy-efficient cross-section flow passage impeller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |