CN109404310A - A kind of low-noise centrifugal blower - Google Patents
A kind of low-noise centrifugal blower Download PDFInfo
- Publication number
- CN109404310A CN109404310A CN201710708199.7A CN201710708199A CN109404310A CN 109404310 A CN109404310 A CN 109404310A CN 201710708199 A CN201710708199 A CN 201710708199A CN 109404310 A CN109404310 A CN 109404310A
- Authority
- CN
- China
- Prior art keywords
- fan
- sliding
- motor
- blade part
- centrifugal
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- F04D29/08—Sealings
- F04D29/083—Sealings 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
-
- 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
-
- 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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to blower field more particularly to a kind of low-noise centrifugal blowers comprising: Fan casing, motor and centrifugal fan；The Fan casing is equipped with air inlet, fan outlet, air outlet and carriage；The shell sliding of the motor is set to the carriage, and the rotation axis of motor slides axially；The centrifugal fan includes a wheel hub and several flabellums；Each flabellum is divided into the first blade part and the second blade part, and first blade part and the second blade part can optionally be in be not connected to shape to be axially arranged each other；The motor of the centrifugal blower is connected in Fan casing using carriage, so that installation and removal are easier quickly；And each flabellum of the centrifugal fan is made of two different blade parts, when so that the centrifugal blower working, can be played the role of shunting, be controlled the feed pressure at gas inflow, and then has been achieved the purpose that be added to air quantity and reduced noise.
Description
Technical field
The present invention relates to blower field more particularly to a kind of low-noise centrifugal blowers.
Background technique
Centrifugal blower is to improve gas pressure by the mechanical energy of input and supply gas side by side the machinery of body, it is a kind of driven
Fluid machinery.Centrifugal blower is widely used in the ventilation of factory, mine, tunnel, cooling tower, vehicle, ship and building, dust discharge
And cooling；The ventilation of boiler and industrial furnace and air inducing；Cooling and ventilation in the apparatus of air conditioning and domestic electric appliance；Paddy
It the drying of object and selects and recommends；Inflation and propulsion of wind-tunnel wind regime and aircushion vehicle etc..
Since common centrifugal blower is equipped with installing ring on Fan casing air inlet, people need to back out bolt one by one, to people
Dismantle and cause compared with burden, and frequently carry out disassembly and be easy to damage installing ring, cause inlet port air inlet chaotic, shadow
The using effect for ringing centrifugal blower removes and repairs after installing ring, replaces to internal centrifugal fan again, due to empty in Fan casing
Between it is smaller so that people is difficult to repair, replaced, and centrifugal fan is larger in large-scale centrifugal blower, and weight is larger, and people is difficult
It is installed with moving to centrifugal fan in Fan casing.
Furthermore existing centrifugal blower or be that air inlet and exhaust air rate are small or be that intake is sufficiently large but centrifugal blower
Noise is especially big when work, so that the practicability of existing centrifugal blower is very poor.
Summary of the invention
It is a kind of easy for assemble or unload it is an object of the invention to propose, and the novel centrifugal wind of energy low noise efficient work
Machine.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of centrifugal fan, comprising: Fan casing, motor and centrifugal fan；The Fan casing side is equipped with air inlet, described
The Fan casing other side is equipped with fan outlet, and the Fan casing outer circumference surface is equipped with air outlet, and the diameter of the fan outlet is not
Less than the diameter of the centrifugal fan；The two sides of the fan outlet are equipped with carriage；The motor is equipped with rotation axis；It is described
Centrifugal fan includes a wheel hub and several flabellums；Several flabellums are connected to around the wheel hub, and each flabellum is divided into
One blade part and the second blade part, first blade part and the second blade part can optionally be in be not connected to shape to be axially arranged each other；
The centrifugal fan is arranged in Fan casing, and the rotation axis wears the fan outlet, and the centrifugal fan, which is fixedly connected on, to be turned
Moving axis；The shell sliding of the motor is set to the carriage, and the rotation axis slides axially；The motor is with respect to wind
Casing one end is fixedly connected with sealing cover, and the sealing cover is contradicted with respect to Fan casing one end in blower shell side wall, the fixed electricity
Machine is equipped with locking device with respect to the Fan casing other end, and the locking device, which is detachably fixed, is connected to carriage.
When needing to repair replacement, opening locking device enables sliding part freely to carry out axially in sliding recess
Sliding is slided motor to the Fan casing other end, since sealing cover is fixedly connected on motor, is centrifuged by sliding sliding part
Fan is fixed on the rotating shaft, drives sealing cover and centrifugal fan when motor sliding, makes sealing cover also axial sliding, centrifugation
Fan exits Fan casing, and centrifugal fan is made easily to be detached from Fan casing, makes not limited by the space of Fan casing when people's maintenance, replacement
System facilitates maintenance, the replacement of people, and when large-scale centrifugal blower does not need to carry out installation centrifugation wind in Fan casing yet
Fan, facilitates the installation of centrifugal fan, goes out centrifugal fan alignment fan after people repair outside Fan casing, replace
Mouthful, motor is pushed to Fan casing side, enters centrifugal fan in Fan casing by fan outlet, contradicts sealing cover in wind
It on casing, is sealed for Fan casing, by the fixed motor position of locking device, prevents motor from sliding, effectively avoid stubborn
Multiple bolts cause parts damages, and improve maintenance, replacement efficiency.
More preferably, each flabellum that the centrifugal fan is bends the different blade part of situation by two and forms,
When so that the centrifugal blower working, shunting can be played the role of, control the feed pressure at gas inflow, and then reached increasing
Air quantity is added and reduces the purpose of noise.
More preferably, each flabellum has a root, the first blade part and the second blade part；One end of the root is connected to
Around the wheel hub, the court of a feudal ruler extends to first blade part and the second blade part to the other end respectively outward；First blade part
It is identical as the quantity of the second blade part.
More preferably, the carriage includes: slider bar and sliding part；The slider bar is equipped with sliding recess；It is described
The shell of motor is equipped with sliding part, the sliding part sliding axially along the rotation axis in sliding recess, the slider bar
One end be fixedly connected on Fan casing with respect to the air inlet other side, the sliding part is symmetrically arranged with two with respect to axle center, the cunning
Dynamic portion is fixedly connected on motor housing.Enable the more stable axial direction along the rotation axis of the motor, in the cunning
It is moved on dynamic item, has further facilitated the installation and removal operation of the centrifugal blower.
More preferably, the sliding part includes fixed plate and sliding panel；The fixed plate side is fixedly connected on motor housing,
The other side of the fixed plate is equipped with the first circular groove；The side of the sliding panel be equipped with the second circular groove, described first
Thrust bearing is equipped in circular groove, the other side of the thrust bearing opposing fixed plate contacts in the second circular groove, institute
State sliding panel and fixed plate gap setting, the other end of the sliding panel opposing fixed plate is equipped with sliding shoe, the sliding shoe with
Sliding recess is slidably connected.Sliding shoe slides axially in sliding recess, and the steady of motor sliding is effectively guaranteed, it is therefore prevented that
Sliding hour offset causes centrifugal fan to generate collision, after centrifugal fan skids off Fan casing, due between fixed plate and sliding panel
It equipped with thrust bearing, rotates motor with thrust bearing axle center, passes through rotation electricity after centrifugal fan skids off Fan casing
Machine produces centrifugal blower, make centrifugal blower be in produce state, facilitate people maintenance, replacement, make maintenance, replacement do not need by
Sliding shoe releases sliding recess, improves maintenance, replacement efficiency.
More preferably, the locking device includes fixed column and locking screw；Fixed hole, institute are equipped on the slider bar
Fixed column is stated across two fixed holes, the fixed column center is equipped with tapped through hole, and the locking screw passes through screw thread
Through-hole contacts at motor.Centrifugal fan is pushed into Fan casing, contradicts sealing cover on Fan casing, by spin locking screw rod,
So that screw rod is axially pushed down motor, be attached to sealing cover closely on Fan casing, improves the leakproofness of sealing cover, and effective fixed electricity
Machine makes easy for installation, and the vibration for the motor being effectively reduced.
The present invention proposes a kind of novel low-noise centrifugal fan according to above content very much, and the motor of the centrifugal blower is in wind
Casing is connected using carriage, so that installation and removal are easier quickly；And each flabellum of the centrifugal fan is
It bends what the different blade part of situation formed by two, when so that the centrifugal blower working, shunting can be played the role of, controlled
Feed pressure at gas inflow, and then achieved the purpose that be added to air quantity and reduced noise.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the present of invention；
Fig. 2 is the structural schematic diagram of one embodiment of the centrifugal fan；
Fig. 3 is the overlooking structure diagram of embodiment illustrated in fig. 2；
Fig. 4 is the structural schematic diagram that embodiment shown in Fig. 1 is in that motor produces state；
Fig. 5 is the decomposition texture schematic diagram of embodiment shown in Fig. 1；
Fig. 6 is the structural schematic diagram of the sealing cover.
Wherein: 1, Fan casing；11, air inlet；12, air outlet；13, fan outlet；2, motor；21, motor shaft；3, it is centrifuged
Fan；4, carriage；41, slider bar；42, sliding recess；43, sliding part；431, sliding panel；432, fixed plate；433, sliding
Motion block；434, the first circular groove；435, thrust bearing；436, the second circular groove；5, locking device；51, fixed column；52,
Locking screw；53, tapped through hole；54, fixed groove；55, fixed hole；6, sealing cover；61, annular seal grooves；62, annular
Sealing ring；201, wheel hub；22, flabellum；221, root；222, the first blade part；223, the second blade part.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
A kind of centrifugal blower as shown in figures 1 to 6, motor 2 and centrifugal fan 3 including Fan casing 1, with rotation axis 21, such as
It, which is included at least, shown in Fig. 2 a wheel hub 201 and several flabellums 22, which is connected to around the wheel hub 21, and each
There is flabellum 22 root 221, the first blade part 222 and the second blade part 223, one end of the root 221 to be connected to wheel hub 201
Around, the court of a feudal ruler extends to first blade part 222 and the second blade part 223 to the other end respectively outward, and in the preferred embodiment should
First blade part 222 denier identical as the quantity of the second blade part 223 in be not connected to shape axis key setting, first blade part 222 and
Second 223, blade be it is in overlying relation be arranged, and the bending direction without leave of first blade part 222 and curved
Bent focal power be it is different from second blade part 223, i.e., as shown in figure 3,222 system of the first blade part is formed in second blade of grade
It between portion 223 and neighbouring second blade part 223, and is in forked.
In Fan casing 1,1 side of Fan casing is equipped with axis hole for the setting of centrifugal fan 3, and the rotation axis 21 passes through axis
Hole, the centrifugal fan 3 are fixedly connected in rotation axis 21, and the opposite axis hole other end of the Fan casing 1 is equipped with air inlet 11, institute
1 outer circumference surface of Fan casing is stated equipped with air outlet 12, opposite 11 other side of air inlet of the Fan casing 1 is equipped with not less than centrifugation wind
The fan outlet 13 of 3 diameters is fanned, the fan outlet 13 is coaxially disposed with fan, and the opposite air inlet 11 of the Fan casing 1 is another
Side is equipped with carriage 4, and the carriage 4 includes slider bar 41, sliding part 43, and it is recessed that the slider bar 41 is equipped with sliding
Slot 42, the sliding part 43 slide axially in sliding recess 42, and it is opposite that described 41 one end of slider bar is fixedly connected on Fan casing 1
11 other side of air inlet, the opposite axle center of the carriage 4 are symmetrically arranged with 2, and the sliding part 43 is fixedly connected on outside motor 2
On periphery, opposite 1 one end of Fan casing of the motor 2 is fixedly connected with sealing cover 6, opposite 1 one end of Fan casing of the sealing cover 6
It contradicts in 1 side wall of Fan casing, opposite 1 other end of Fan casing of the fixed motor 2 is equipped with locking device 5, and the locking device 5 can
Disassembly is fixedly connected on 2 slider bars 41, and the sliding part 43 includes fixed plate 432, sliding panel 431, the fixed plate 432
Side is fixedly connected on 2 outer circumference surface of motor, and 432 other side of fixed plate is equipped with the first circular groove 434, the sliding
431 side of plate is equipped with the second circular groove 436, is equipped with thrust bearing 435, the thrust axis in first circular groove 434
It holds 435 opposing fixed plate, 432 other side to contradict in the second circular groove 436, the sliding panel 431 and 432 gap of fixed plate
Setting, 431 opposing fixed plate of sliding panel, 432 other end are equipped with sliding shoe 433, the sliding shoe 433 and sliding recess 42
Sliding connection, the locking device 5 include fixed column 51, locking screw 52, are equipped with fixed hole on the slider bar 41
55, the fixed column 51 passes through 2 fixed holes 55, and 51 center of fixed column is equipped with tapped through hole 53, the locking
Screw rod 52 passes through tapped through hole 53 and contradicts on motor 2, and 51 both ends of fixed column are respectively equipped with fixed groove 54, the fixation
Groove 54 is adapted with 55 side wall of fixed hole, and opposite 1 side of Fan casing of the sealing cover 6 is equipped with annular seal grooves 61, institute
It states and is equipped with ring type seal 62 in annular seal grooves 61.
When needing to repair replacement, open locking device 5 enable sliding part 43 in sliding recess 42 freely into
Row slides axially, and by sliding sliding part 43, slides motor 2 to 1 other end of Fan casing, since sealing cover 6 is fixedly connected on
On motor 2, centrifugal fan 3 is fixed in rotation axis 21, and sealing cover 6 and centrifugal fan 3 are driven when motor 2 slides, makes to seal
Also the sliding of axial direction, centrifugal fan 3 exit Fan casing 1 to lid 6, and centrifugal fan 3 is made easily to be detached from Fan casing 1, repair people,
It is not limited by the space of Fan casing 1 when replacement, facilitates maintenance, the replacement of people, and when large-scale centrifugal blower does not need yet
Installation centrifugal fan 3 is carried out in Fan casing 1, facilitates the installation of centrifugal fan 3, when people repair outside Fan casing 1, replace
After by centrifugal fan be aligned fan outlet 13, by motor 2 to 1 side of Fan casing push, so that centrifugal fan 3 is passed through fan
Outlet 13 enters in Fan casing 1, contradicts sealing cover 6 on Fan casing 1, is sealed for Fan casing 1, passes through locking device 5
Fixed 2 position of motor prevents motor 2 from sliding, and effectively avoids and twists multiple bolts and cause parts damages, and improve maintenance,
Efficiency is replaced, sliding shoe 433 slides axially in sliding recess 42, the steady of the sliding of motor 2 is effectively guaranteed, it is therefore prevented that sliding
Dynamic hour offset causes centrifugal fan 3 to generate collision, after centrifugal fan 3 skids off Fan casing 1, due to fixed plate 432 and sliding panel
It is equipped with thrust bearing 435 between 431, rotates motor 2 with 435 axle center of thrust bearing, when centrifugal fan 3 skids off wind
Centrifugal blower is produced by rotary electric machine 2 after casing 1, facilitates people's maintenance, replacement, maintenance, replacement is made not to need to slide
Block 433 releases sliding recess 42, improves maintenance, replacement efficiency, centrifugal fan 3 is pushed into Fan casing 1, contradicts sealing cover 6
On Fan casing 1, by spin locking screw rod 52, screw rod is made axially to push down motor 2, is attached to sealing cover 6 closely on Fan casing 1,
The leakproofness of sealing cover 6, and effective fixed motor 2 are improved, easy for installation, and the vibration for the motor 2 being effectively reduced is made, when
After fixed column 51 is inserted into fixed hole 55, makes 54 frame of fixed groove on the side wall of fixed hole 55, effectively prevent screw rod from revolving
Fixed column 51 shifts when turning, the accuracy of the installation effectively improved.Ring type seal 62 substantially increases sealing cover 6
Leakproofness, and prevent sealing cover 6 from directly contradicting and cause component wear on Fan casing 1, improve Fan casing 1 and sealing cover 6
Service life.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (5)
1. a kind of centrifugal fan characterized by comprising Fan casing, motor and centrifugal fan；
The Fan casing side is equipped with air inlet, and the Fan casing other side is equipped with fan outlet, the Fan casing outer circumference surface
It is equipped with air outlet, the diameter of the fan outlet is not less than the diameter of the centrifugal fan；The two sides of the fan outlet are set
There is carriage；
The motor is equipped with rotation axis；
The centrifugal fan includes a wheel hub and several flabellums；
Several flabellums are connected to around the wheel hub, and each flabellum is divided into the first blade part and the second blade part, this
One blade part and the second blade part can optionally be in be not connected to shape to be axially arranged each other；
The centrifugal fan is arranged in Fan casing, and the rotation axis wears the fan outlet, and the centrifugal fan is fixedly connected
In rotation axis；
The shell sliding of the motor is set to the carriage, and the rotation axis slides axially；The motor is with respect to wind
Casing one end is fixedly connected with sealing cover, and the sealing cover is contradicted with respect to Fan casing one end in blower shell side wall, the fixed electricity
Machine is equipped with locking device with respect to the Fan casing other end, and the locking device, which is detachably fixed, is connected to carriage.
2. a kind of low-noise centrifugal blower according to claim 1, which is characterized in that each flabellum has one
Portion, the first blade part and the second blade part；One end of the root is connected to around the wheel hub, and the other end is distinguished outward
The court of a feudal ruler extends to first blade part and the second blade part；First blade part is identical as the quantity of the second blade part.
3. a kind of low-noise centrifugal blower according to claim 2, which is characterized in that the carriage includes:
Slider bar and sliding part；The slider bar is equipped with sliding recess；The shell of the motor is equipped with sliding part, and the sliding part exists
Sliding axially along the rotation axis in sliding recess, it is another with respect to air inlet that one end of the slider bar is fixedly connected on Fan casing
Side, the sliding part are symmetrically arranged with two with respect to axle center, and the sliding part is fixedly connected on motor housing.
4. a kind of low-noise centrifugal blower according to claim 3, which is characterized in that the sliding part includes fixing
Plate and sliding panel；
The fixed plate side is fixedly connected on motor housing, and the other side of the fixed plate is equipped with the first circular groove；It is described
The side of sliding panel is equipped with the second circular groove, is equipped with thrust bearing in first circular groove, the thrust bearing is opposite
The other side of fixed plate contacts in the second circular groove, the sliding panel and fixed plate gap setting, and the sliding panel is opposite
The other end of fixed plate is equipped with sliding shoe, and the sliding shoe is slidably connected with sliding recess.
5. a kind of low-noise centrifugal blower according to claim 4, which is characterized in that the locking device includes solid
Fixed column and locking screw；
Fixed hole is equipped on the slider bar, the fixed column passes through two fixed holes, the fixed column center
Equipped with tapped through hole, the locking screw passes through tapped through hole and contacts at motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708199.7A CN109404310A (en) | 2017-08-17 | 2017-08-17 | A kind of low-noise centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708199.7A CN109404310A (en) | 2017-08-17 | 2017-08-17 | A kind of low-noise centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109404310A true CN109404310A (en) | 2019-03-01 |
Family
ID=65455055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710708199.7A Withdrawn CN109404310A (en) | 2017-08-17 | 2017-08-17 | A kind of low-noise centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109404310A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576525A (en) * | 2020-12-04 | 2021-03-30 | 中山市华南理工大学现代产业技术研究院 | Blade structure of making an uproar falls in drag reduction |
-
2017
- 2017-08-17 CN CN201710708199.7A patent/CN109404310A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576525A (en) * | 2020-12-04 | 2021-03-30 | 中山市华南理工大学现代产业技术研究院 | Blade structure of making an uproar falls in drag reduction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219012901U (en) | Centrifugal fan convenient to dismantle | |
| CN106374661B (en) | Rotor assembly and motor | |
| CN201705694U (en) | High-temperature resistance mixed-flow fan | |
| CN107061361A (en) | A kind of Environmental-protecting dust-removing explosion-proof centrifugal fan | |
| CN109404310A (en) | A kind of low-noise centrifugal blower | |
| CN111828376B (en) | Centrifugal fan impeller | |
| CN211398034U (en) | Impeller of energy-saving centrifugal ventilator | |
| CN107605765A (en) | Centrifugal blower | |
| CN102305215A (en) | Two-stage disrotatory axial-flow-type main ventilator for mining | |
| CN210715203U (en) | High temperature and high pressure resistant centrifugal fan | |
| CN207810484U (en) | A kind of built-in electric roller directly driven with permanent magnet synchronous motor | |
| CN211852207U (en) | Novel direct current fan | |
| CN208966640U (en) | A kind of centrifugal ventilation fan | |
| CN207393509U (en) | Centrifugal blower | |
| CN209781300U (en) | Centrifugal fan | |
| CN204003537U (en) | Centrifugal blower | |
| CN112196839A (en) | Air inlet dustproof device of centrifugal fan | |
| CN210106242U (en) | Impeller mechanism of parallel centrifugal fans | |
| CN205956034U (en) | Axial fan convenient to maintain | |
| CN208669646U (en) | A kind of new type explosion proof axial flow blower | |
| CN212803706U (en) | Dust exhausting fan transmission structure | |
| CN220415805U (en) | Vortex type power frequency centrifugal fan | |
| CN206517185U (en) | Rotor assembly and motor | |
| CN208669650U (en) | Integral type high-speed permanent magnetic centrifugal blower | |
| CN203604270U (en) | Cooling and micro-motion abrasion preventing structure of counter-rotating local fan bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190301 |
|
| WW01 | Invention patent application withdrawn after publication |