CN109630436A - A kind of centrifugal fan - Google Patents
A kind of centrifugal fan Download PDFInfo
- Publication number
- CN109630436A CN109630436A CN201910064218.6A CN201910064218A CN109630436A CN 109630436 A CN109630436 A CN 109630436A CN 201910064218 A CN201910064218 A CN 201910064218A CN 109630436 A CN109630436 A CN 109630436A
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- CN
- China
- Prior art keywords
- connecting cylinder
- centrifugal fan
- mounting disc
- arc
- fan according
- 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.)
- Granted
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Classifications
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- 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
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of centrifugal fan, including spiral case and impeller, the impeller is configured with driving motor, has air inlet and discharge pipe on the spiral case；The impeller includes mounting disc, and the working face of mounting disc is equipped with connecting cylinder, and the periphery of connecting cylinder is evenly distributed with multiple arcs linear leaf；The mounting disc working face is equipped with arc short blade between adjacent arc linear leaf, and multiple arcs linear leaf and arc short blade are arranged alternately；There is gap between arc short blade one end and connecting cylinder of connecting cylinder；Bracket is equipped in the discharge pipe, bracket is equipped with muffler, and the inside of muffler is equipped with the anechoic sheet of muti-piece lateral arrangement；The outlet air pipe end is detachably equipped with screen pack.The present invention is conducive to promote and apply.
Description
Technical field
The present invention relates to centrifugal blower technical fields, more particularly to a kind of centrifugal fan.
Background technique
Centrifugal blower is a kind of mechanical energy by input, improves gas pressure and supplies gas side by side the machinery of body, it is used extensively
In the ventilation of factory, mine, tunnel, cooling tower, vehicle, ship and building, dust discharge and cooling and the apparatus of air conditioning etc.
Cooling and ventilation in domestic electric appliance.
Centrifugal fan is mainly by impeller, casing, shaft coupling, axis.Impeller is to generate wind pressure and transmit the main of energy
Work done component, casing is mainly used to introduce gas and gas is discharged, while the part kinetic energy of gas is become pressure energy, shaft coupling
For connecting motor and blower, torque is transmitted, axis installs and fixes impeller, and by shaft coupling and motor, exhaust-gas treatment is mainly used
It is administered in industrial waste gas such as dust particle, flue gas flue dust, gas with foreign flavor, the toxic and harmful gas that industrial site generates
Work.
Existing centrifugal fan can generate biggish noise at work, and can also pass through harmful particulate matter
Air outlet enters in natural environment, to pollute environment, or even damages to human body.
Summary of the invention
The present invention is intended to provide a kind of centrifugal fan, so as to solve the deficiencies in the prior art.
The technical solution adopted by the present invention are as follows: a kind of centrifugal fan, including spiral case and impeller, the impeller is configured with drive
Motor is moved, there is air inlet and discharge pipe on the spiral case, which is characterized in that the impeller includes mounting disc, the work of mounting disc
Make face equipped with connecting cylinder, the periphery of connecting cylinder is evenly distributed with multiple arcs linear leaf；The mounting disc working face is in phase
Arc short blade is equipped between adjacent arc linear leaf, multiple arcs linear leaf and arc short blade are arranged alternately；Close to connecting cylinder
Arc short blade one end and connecting cylinder between have gap；Bracket is equipped in the discharge pipe, bracket is equipped with muffler, noise reduction
The inside of device is equipped with the anechoic sheet of muti-piece lateral arrangement；The outlet air pipe end is detachably equipped with screen pack.
Centrifugal fan according to the present invention, the spiral case lower section are provided with the pedestal for being used to support the spiral case,
The chassis interior hollow formation cavity is provided with several semicircle supporting elements, the semicircle supporting element in the cavity
For rubber material, the circular arc of the semicircle supporting element is face-up, each semicircle supporting element and the cavity inner wall it
Between be provided with corresponding compressed spring；Reduce the extent of vibration of blower by the buffer function of compressed spring, so that
Fan operation is more stable, effectively avoids centrifugal blower that from generating biggish mechanical shock at work, causes inside device
Components loosen, and also result in blower damage.
The back side of centrifugal fan according to the present invention, the arc short blade is equipped with multiple arcs diversion trench, increases
Add the contact area of arc short blade and air-flow, to improve the drafting efficiency of centrifugal blower.
Centrifugal fan according to the present invention, the screen pack include rectangular frame, are equipped in rectangular frame
Strainer.
Centrifugal fan according to the present invention, the rectangular frame and discharge pipe are detachably connected by screw.
Centrifugal fan according to the present invention, the multiple arc linear leaf and connecting cylinder are integrally formed.
Centrifugal fan according to the present invention, the connecting cylinder inner hole surface are provided in the axial direction with card slot；The installation
Guide cylinder is fixed on disk, guide cylinder periphery is equipped with the strip cooperated with card slot.
Centrifugal fan according to the present invention, the guide cylinder protrude into connecting cylinder, and the periphery of guide cylinder with
Connecting cylinder inner headed face is engaged.
Centrifugal fan according to the present invention, the arc linear leaf are engaged with mounting disc.
Centrifugal fan according to the present invention, the connecting cylinder end face offer multiple through-holes, and mounting disc is in through-hole
Corresponding position offers connecting hole；The connecting cylinder passes through through-hole by bolt with mounting disc and connecting hole is fixedly connected；It is described
Multiple through-holes are 4.
The beneficial effects of the present invention are:
The present invention is arranged alternately by multiple arcs linear leaf and arc short blade, be ensure that and is not being blocked air-admitting surface
In the case where, it is as much as possible to form multiple blade grid passages, the separation vortex in fan blade runner is greatly improved, fan blade is improved
Working efficiency.The present invention reduces air-flow noise caused by exit, improves by the way that muffler is arranged at discharge pipe
The Environmental Design ability of blower with muffler.The present invention is detachably equipped with screen pack in outlet air pipe end, in air-flow
Dust impurity is adsorbed on filter screen, and dust impurity is avoided to be expelled directly out, and influences the health of user, while after a period of use
Screen pack is removed and is cleaned to air outlet by user.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of centrifugal fan provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram in discharge pipe；
Fig. 3 is the structural schematic diagram of impeller；
Fig. 4 is the structural schematic diagram in mounting disc；
Fig. 5 is the cooperation schematic diagram of connecting cylinder Yu arc linear leaf；
Fig. 6 is the cooperation schematic diagram of arc short blade and mounting disc.
In figure, 1- spiral case, 2- discharge pipe, 3- impeller, 4- pedestal, 5- semicircle supporting element, 6- compressed spring, 7- filter screen
Plate, 8- bracket, 9- muffler, 10- anechoic sheet, 31- connecting cylinder, 32- mounting disc, 33- arc linear leaf, 34- arc short blade,
35- guide cylinder, 36- through-hole, 37- arc diversion trench, 38- card slot, 39- strip, 40- connecting hole, 72- rectangular frame, 71- filtering
Net and 73- screw.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
One step is described in detail.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation or
Person is constructed and operated in a specific orientation, therefore it is not considered as limiting the invention.In addition, term " first ", " the
Two ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；When
Right, it can also be mechanical connection, be also possible to be electrically connected；In addition, it can also be and be connected directly, be also possible to pass through centre
Medium is indirectly connected, or can be the connection inside two elements.For the ordinary skill in the art, Ke Yigen
The concrete meaning of above-mentioned term in the present invention is understood according to concrete condition.
Embodiment 1
As shown in figures 1 to 6, the present invention provides a kind of centrifugal fan, including spiral case 1 and impeller 3, the impeller 3 is configured
There is driving motor, there is air inlet and discharge pipe 2 on the spiral case 1；The impeller 3 includes mounting disc 32, the work of mounting disc 32
Make face equipped with connecting cylinder 31, the periphery of connecting cylinder 31 is evenly distributed with multiple arcs linear leaf 33；The mounting disc 32
Working face is equipped with arc short blade 34 between adjacent arc linear leaf 33, and multiple arcs linear leaf 33 and arc short blade 34 are handed over
For setting；There is gap between one end and connecting cylinder 31 of the arc short blade 34 of connecting cylinder 31；It is equipped in the discharge pipe 2
Bracket 8, bracket 8 are equipped with muffler 9, and the inside of muffler 9 is equipped with the anechoic sheet 10 of muti-piece lateral arrangement；The discharge pipe 2
End is detachably equipped with screen pack 7.
The back side of centrifugal fan according to the present invention, the arc short blade 34 is equipped with multiple arcs diversion trench
37, increase the contact area of arc short blade 34 and air-flow, to improve the drafting efficiency of centrifugal blower.
Centrifugal fan according to the present invention, the screen pack 7 include rectangular frame 72, are set in rectangular frame 72
There is filter screen 71；The rectangular frame 72 is detachably connected with discharge pipe 2 by screw 73.
Centrifugal fan according to the present invention, the multiple arc linear leaf 33 are integrally formed with connecting cylinder 31；Institute
It states 31 inner hole surface of connecting cylinder and is provided in the axial direction with card slot 38；Guide cylinder 35 is fixed in the mounting disc 32, outside guide cylinder 35
Disc is equipped with the strip 39 cooperated with card slot 38；The guide cylinder 35 protrudes into connecting cylinder 31, and the periphery of guide cylinder 35 with
31 inner headed face of connecting cylinder is engaged；The arc linear leaf 33 is engaged with mounting disc 32；The mounting disc 32 and driving
Motor connection.When the present invention installs, the card slot 38 on connecting cylinder 31 is stuck on the strip 39 of guide cylinder 35, realizes connecting cylinder 31
On through-hole 36 and mounting disc 32 on connecting hole 40 positioned, pass through through-hole 36 and connecting hole 40 for connecting cylinder convenient for bolt
31 and mounting disc 32 be fixed.
Centrifugal fan according to the present invention, the end face of the connecting cylinder 31 offer multiple through-holes 36, mounting disc
32 offer connecting hole 40 in 36 corresponding position of through-hole；The connecting cylinder 31 passes through through-hole 36 by bolt with mounting disc 32 and connects
Hole 40 is connect to be fixedly connected；The multiple through-hole 36 is 4.
Embodiment 1
As shown in figures 1 to 6, the present invention provides a kind of centrifugal fan, including spiral case 1 and impeller 3, the impeller 3 is configured
There is driving motor, there is air inlet and discharge pipe 2 on the spiral case 1；The impeller 3 includes mounting disc 32, the work of mounting disc 32
Make face equipped with connecting cylinder 31, the periphery of connecting cylinder 31 is evenly distributed with multiple arcs linear leaf 33；The mounting disc 32
Working face is equipped with arc short blade 34 between adjacent arc linear leaf 33, and multiple arcs linear leaf 33 and arc short blade 34 are handed over
For setting；There is gap between one end and connecting cylinder 31 of the arc short blade 34 of connecting cylinder 31；It is equipped in the discharge pipe 2
Bracket 8, bracket 8 are equipped with muffler 9, and the inside of muffler 9 is equipped with the anechoic sheet 10 of muti-piece lateral arrangement；The discharge pipe 2
End is detachably equipped with screen pack 7.
The back side of centrifugal fan according to the present invention, the arc short blade 34 is equipped with multiple arcs diversion trench
37, increase the contact area of arc short blade 34 and air-flow, to improve the drafting efficiency of centrifugal blower.
Centrifugal fan according to the present invention, the screen pack 7 include rectangular frame 72, are set in rectangular frame 72
There is filter screen 71；The rectangular frame 72 is detachably connected with discharge pipe 2 by screw 73.
Centrifugal fan according to the present invention, the multiple arc linear leaf 33 are integrally formed with connecting cylinder 31；Institute
It states 31 inner hole surface of connecting cylinder and is provided in the axial direction with card slot 38；Guide cylinder 35 is fixed in the mounting disc 32, outside guide cylinder 35
Disc is equipped with the strip 39 cooperated with card slot 38；The guide cylinder 35 protrudes into connecting cylinder 31, and the periphery of guide cylinder 35 with
31 inner headed face of connecting cylinder is engaged；The arc linear leaf 33 is engaged with mounting disc 32；The mounting disc 32 and driving
Motor connection.When the present invention installs, the card slot 38 on connecting cylinder 31 is stuck on the strip 39 of guide cylinder 35, realizes connecting cylinder 31
On through-hole 36 and mounting disc 32 on connecting hole 40 positioned, pass through through-hole 36 and connecting hole 40 for connecting cylinder convenient for bolt
31 and mounting disc 32 be fixed.
Centrifugal fan according to the present invention, the end face of the connecting cylinder 31 offer multiple through-holes 36, mounting disc
32 offer connecting hole 40 in 36 corresponding position of through-hole；The connecting cylinder 31 passes through through-hole 36 by bolt with mounting disc 32 and connects
Hole 40 is connect to be fixedly connected；The multiple through-hole 36 is 4.
Centrifugal fan according to the present invention is provided with the pedestal for being used to support the spiral case 1 below the spiral case 1
4,4 boring of pedestal forms cavity, several semicircle supporting elements 5, the semicircle branch are provided in the cavity
Support member 5 is rubber material, and the circular arc of the semicircle supporting element 5 is face-up, each semicircle supporting element 5 and the cavity
Corresponding compressed spring 6 is provided between inner wall.
The present invention reduces the extent of vibration of blower by the buffer function of compressed spring 6, so that fan operation is more
Add stabilization, effectively avoid centrifugal blower that from generating biggish mechanical shock at work, the components inside device is caused to loosen,
Also result in blower damage.
The present invention is arranged alternately by multiple arcs linear leaf 33 and arc short blade 34, be ensure that and is not being blocked air inlet
It is as much as possible to form multiple blade grid passages in the case where area, the separation vortex in fan blade runner is greatly improved, is improved
The working efficiency of fan blade.
The present invention reduces air-flow noise caused by exit, improves tool by the way that muffler is arranged at discharge pipe
There is the Environmental Design ability of the blower of muffler.
The present invention is detachably equipped with screen pack 7 in 2 end of discharge pipe, and the dust impurity in air-flow is adsorbed on filter screen 71
On, it avoids dust impurity from being expelled directly out, influences the health of user, while user removes screen pack 7 after a period of use
Air outlet is cleaned.
Finally, it should be noted that the above various embodiments is only preferred embodiment of the invention to illustrate skill of the invention
Art scheme, rather than its limitations, when being less limitation the scope of the patents of the invention；Although referring to foregoing embodiments to the present invention
It is described in detail, those skilled in the art should understand that: it still can be to recorded in foregoing embodiments
Technical solution modify, or equivalent substitution of some or all of the technical features；And these modification or
Replacement, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution；In addition, by of the invention
Technical solution it is direct or indirect be used in other related technical areas, similarly include in scope of patent protection of the invention
It is interior.
Claims (10)
1. a kind of centrifugal fan, including spiral case and impeller, the impeller is configured with driving motor, has air inlet on the spiral case
Mouth and discharge pipe, it is characterised in that: the impeller includes mounting disc, and the working face of mounting disc is equipped with connecting cylinder, connecting cylinder
Periphery is evenly distributed with multiple arcs linear leaf；It is short that the mounting disc working face is equipped with arc between adjacent arc linear leaf
Blade, multiple arcs linear leaf and arc short blade are arranged alternately；Close to connecting cylinder arc short blade one end and connecting cylinder it
Between have gap；Bracket is equipped in the discharge pipe, bracket is equipped with muffler, and the inside of muffler is equipped with muti-piece lateral arrangement
Anechoic sheet；The outlet air pipe end is detachably equipped with screen pack.
2. centrifugal fan according to claim 1, it is characterised in that: be provided with below the spiral case described in being used to support
The pedestal of spiral case, the chassis interior hollow formation cavity are provided with several semicircle supporting elements in the cavity, and described half
Circular shaped support is rubber material, and the circular arc of the semicircle supporting element is face-up, each semicircle supporting element with it is described
Corresponding compressed spring is provided between cavity inner wall.
3. centrifugal fan according to claim 1, it is characterised in that: the back side of the arc short blade is equipped with multiple arcs
Shape diversion trench.
4. centrifugal fan according to claim 1, it is characterised in that: the screen pack includes rectangular frame, rectangle
Filter screen is equipped in frame.
5. centrifugal fan according to claim 4, it is characterised in that: the rectangular frame and discharge pipe can by screw
Dismantling connection.
6. centrifugal fan according to claim 1, it is characterised in that: the multiple arc linear leaf and connecting cylinder one
Molding.
7. centrifugal fan according to claim 6, it is characterised in that: the connecting cylinder inner hole surface is provided in the axial direction with card
Slot；Guide cylinder is fixed in the mounting disc, guide cylinder periphery is equipped with the strip cooperated with card slot.
8. centrifugal fan according to claim 7, it is characterised in that: the guide cylinder protrudes into connecting cylinder, and is oriented to
The periphery of cylinder is engaged with connecting cylinder inner headed face.
9. centrifugal fan according to claim 8, it is characterised in that: the arc linear leaf is contacted with mounting disc matches
It closes.
10. centrifugal fan according to claim 9, it is characterised in that: the connecting cylinder end face offers multiple through-holes,
Mounting disc offers connecting hole in through-hole corresponding position；The connecting cylinder and mounting disc are solid across through-hole and connecting hole by bolt
Fixed connection；The multiple through-hole is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064218.6A CN109630436B (en) | 2019-01-23 | 2019-01-23 | Centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064218.6A CN109630436B (en) | 2019-01-23 | 2019-01-23 | Centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630436A true CN109630436A (en) | 2019-04-16 |
| CN109630436B CN109630436B (en) | 2023-06-06 |
Family
ID=66063282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910064218.6A Active CN109630436B (en) | 2019-01-23 | 2019-01-23 | Centrifugal fan |
Country Status (1)
| Country | Link |
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| CN (1) | CN109630436B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111472985A (en) * | 2020-04-27 | 2020-07-31 | 江苏优格曼航空科技有限公司 | High-efficient vibration/noise reduction's centrifugal fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111472985A (en) * | 2020-04-27 | 2020-07-31 | 江苏优格曼航空科技有限公司 | High-efficient vibration/noise reduction's centrifugal fan |
| CN111472985B (en) * | 2020-04-27 | 2021-04-09 | 江苏优格曼航空科技有限公司 | Vibration/noise reduction's centrifugal fan |
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