CN109630436B - Centrifugal fan - Google Patents
Centrifugal fan Download PDFInfo
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- CN109630436B CN109630436B CN201910064218.6A CN201910064218A CN109630436B CN 109630436 B CN109630436 B CN 109630436B CN 201910064218 A CN201910064218 A CN 201910064218A CN 109630436 B CN109630436 B CN 109630436B
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- arc
- connecting cylinder
- mounting plate
- centrifugal fan
- shaped
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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
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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
- F04D29/002—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
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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
- F04D29/26—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- 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
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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
- F04D29/70—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 invention provides a centrifugal fan, which comprises a volute and an impeller, wherein the impeller is provided with a driving motor, and the volute is provided with an air inlet and an air outlet pipe; the impeller comprises a mounting plate, a connecting cylinder is arranged on the working surface of the mounting plate, and a plurality of arc-shaped long blades are uniformly distributed on the outer circular surface of the connecting cylinder; the working surface of the mounting plate is provided with arc-shaped short blades between adjacent arc-shaped long blades, and a plurality of arc-shaped long blades and arc-shaped short blades are alternately arranged; a gap is formed between one end of the arc-shaped short blade close to the connecting cylinder and the connecting cylinder; a bracket is arranged in the air outlet pipe, a muffler is arranged on the bracket, and a plurality of transversely arranged muffler pieces are arranged in the muffler; the tail end of the air outlet pipe is detachably provided with a filter screen plate. The invention is beneficial to popularization and application.
Description
Technical Field
The invention relates to the technical field of centrifugal fans, in particular to a centrifugal fan.
Background
The centrifugal fan is a machine for increasing the pressure of gas and discharging the gas by means of inputted mechanical energy, and is widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and cooling and ventilation in household electrical appliances such as air conditioning equipment.
The centrifugal ventilator mainly comprises: impeller, casing, shaft coupling, axle. The impeller is a main acting component for generating wind pressure and transferring energy, the shell is mainly used for introducing gas and exhausting gas, meanwhile, part of kinetic energy of the gas is changed into pressure energy, the shaft coupling is used for connecting the motor and the fan, the torque is transferred, the impeller is mounted and fixed by the shaft, and the waste gas treatment is mainly used for treating industrial waste gas such as dust particles, smoke dust, peculiar smell gas and toxic and harmful gas generated in industrial places through the shaft coupling and the motor.
The existing centrifugal ventilator can generate larger noise during working, and harmful particulate matters can enter the natural environment through the air outlet, so that the environment is polluted, and even the human body is injured.
Disclosure of Invention
The invention aims to provide a centrifugal fan to solve the defects in the prior art.
The invention adopts the technical scheme that: the centrifugal fan comprises a volute and an impeller, wherein the impeller is provided with a driving motor, and the volute is provided with an air inlet and an air outlet pipe; the working surface of the mounting plate is provided with arc-shaped short blades between adjacent arc-shaped long blades, and a plurality of arc-shaped long blades and arc-shaped short blades are alternately arranged; a gap is formed between one end of the arc-shaped short blade close to the connecting cylinder and the connecting cylinder; a bracket is arranged in the air outlet pipe, a muffler is arranged on the bracket, and a plurality of transversely arranged muffler pieces are arranged in the muffler; the tail end of the air outlet pipe is detachably provided with a filter screen plate.
According to the centrifugal fan disclosed by the invention, a base for supporting the volute is arranged below the volute, a cavity is formed in the base in a hollow mode, a plurality of semicircular supporting pieces are arranged in the cavity, the semicircular supporting pieces are made of rubber materials, the circular arc surfaces of the semicircular supporting pieces face upwards, and corresponding compression springs are arranged between each semicircular supporting piece and the inner wall of the cavity; the vibration degree of the fan is reduced through the buffer action of the compression spring, so that the fan is more stable to operate, the phenomenon that the centrifugal fan can generate larger mechanical vibration during working is effectively avoided, parts inside the device are loose, and the fan is damaged.
According to the centrifugal fan disclosed by the invention, the back surface of the arc-shaped short blade is provided with the plurality of arc-shaped diversion trenches, so that the contact area between the arc-shaped short blade and the air flow is increased, and the ventilation efficiency of the centrifugal fan is improved.
According to the centrifugal fan provided by the invention, the filter screen plate comprises a rectangular frame, and a filter screen is arranged in the rectangular frame.
According to the centrifugal fan disclosed by the invention, the rectangular frame is detachably connected with the air outlet pipe through the screws.
According to the centrifugal fan disclosed by the invention, the plurality of arc-shaped long blades and the connecting cylinder are integrally formed.
According to the centrifugal fan disclosed by the invention, the inner hole surface of the connecting cylinder is provided with the clamping groove along the axial direction; the mounting plate is fixedly provided with a guide cylinder, and the outer circular surface of the guide cylinder is provided with a clamping strip matched with the clamping groove.
According to the centrifugal fan disclosed by the invention, the guide cylinder extends into the connecting cylinder, and the outer circular surface of the guide cylinder is in contact fit with the inner circular surface of the connecting cylinder.
According to the centrifugal fan disclosed by the invention, the arc-shaped long blades are in contact fit with the mounting plate.
According to the centrifugal fan disclosed by the invention, the end surface of the connecting cylinder is provided with a plurality of through holes, and the mounting disc is provided with connecting holes at the positions corresponding to the through holes; the connecting cylinder is fixedly connected with the mounting plate through bolts passing through the through holes and the connecting holes; the number of the through holes is 4.
The beneficial effects of the invention are as follows:
according to the invention, the plurality of arc long blades and the arc short blades are alternately arranged, so that a plurality of blade grid channels are formed as much as possible under the condition of not blocking the area of the air inlet, the separation vortex in the blade flow channel is greatly improved, and the working efficiency of the blade is improved. According to the invention, the silencer is arranged at the air outlet pipe, so that noise caused by air flow at the outlet is reduced, and the environment-friendly design capacity of the fan with the silencer is improved. According to the invention, the filter screen plate is detachably arranged at the tail end of the air outlet pipe, dust and impurities in the air flow are adsorbed on the filter screen plate, so that the influence on the health of a user due to direct discharge of the dust and impurities is avoided, and meanwhile, after a period of use, the user removes the filter screen plate to clean the air outlet.
Drawings
FIG. 1 is a schematic diagram of a centrifugal fan according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure in the air outlet pipe;
FIG. 3 is a schematic structural view of an impeller;
FIG. 4 is a schematic view of the structure on the mounting plate;
FIG. 5 is a schematic illustration of the mating of the connecting cylinder with the arcuate long blade;
FIG. 6 is a schematic illustration of the mating of an arcuate short blade and a mounting plate.
In the figure, a 1-volute, a 2-air outlet pipe, a 3-impeller, a 4-base, a 5-semicircular supporting piece, a 6-compression spring, a 7-filter screen plate, an 8-bracket, a 9-silencer, a 10-silencing sheet, a 31-connecting cylinder, a 32-mounting plate, a 33-arc long blade, a 34-arc short blade, a 35-guiding cylinder, a 36-through hole, a 37-arc guiding groove, a 38-clamping groove, a 39-clamping strip, a 40-connecting hole, a 72-rectangular frame, a 71-filter screen and 73-screws.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; of course, it may be mechanically or electrically connected; in addition, the connection may be direct, indirect via an intermediate medium, or communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
As shown in fig. 1-6, the invention provides a centrifugal fan, which comprises a volute 1 and an impeller 3, wherein the impeller 3 is provided with a driving motor, and the volute 1 is provided with an air inlet and an air outlet pipe 2; the impeller 3 comprises a mounting plate 32, a connecting cylinder 31 is arranged on the working surface of the mounting plate 32, and a plurality of arc-shaped long blades 33 are uniformly distributed on the outer circular surface of the connecting cylinder 31; the working surface of the mounting plate 32 is provided with arc-shaped short blades 34 between adjacent arc-shaped long blades 33, and a plurality of arc-shaped long blades 33 and arc-shaped short blades 34 are alternately arranged; a gap is formed between one end of the arc-shaped short blade 34 close to the connecting cylinder 31 and the connecting cylinder 31; a bracket 8 is arranged in the air outlet pipe 2, a muffler 9 is arranged on the bracket 8, and a plurality of transversely arranged silencing sheets 10 are arranged in the muffler 9; the tail end of the air outlet pipe 2 is detachably provided with a filter screen plate 7.
According to the centrifugal fan disclosed by the invention, the back surface of the arc-shaped short blade 34 is provided with the plurality of arc-shaped diversion trenches 37, so that the contact area between the arc-shaped short blade 34 and the air flow is increased, and the ventilation efficiency of the centrifugal fan is improved.
According to the centrifugal fan of the invention, the filter screen plate 7 comprises a rectangular frame 72, and a filter screen 71 is arranged in the rectangular frame 72; the rectangular frame 72 is detachably connected with the air outlet pipe 2 through screws 73.
According to the centrifugal fan of the invention, the plurality of arc-shaped long blades 33 and the connecting cylinder 31 are integrally formed; a clamping groove 38 is formed in the inner hole surface of the connecting cylinder 31 along the axial direction; the mounting plate 32 is fixedly provided with a guide cylinder 35, and the outer circular surface of the guide cylinder 35 is provided with a clamping strip 39 matched with the clamping groove 38; the guide cylinder 35 extends into the connecting cylinder 31, and the outer circular surface of the guide cylinder 35 is in contact fit with the inner circular surface of the connecting cylinder 31; the arc-shaped long blades 33 are in contact fit with the mounting plate 32; the mounting plate 32 is connected to a drive motor. When the invention is installed, the clamping groove 38 on the connecting cylinder 31 is clamped on the clamping strip 39 of the guide cylinder 35, so that the through hole 36 on the connecting cylinder 31 and the connecting hole 40 on the mounting plate 32 are positioned, and bolts penetrate through the through hole 36 and the connecting hole 40 to fix the connecting cylinder 31 and the mounting plate 32.
According to the centrifugal fan of the invention, the end surface of the connecting cylinder 31 is provided with a plurality of through holes 36, and the mounting plate 32 is provided with connecting holes 40 at the positions corresponding to the through holes 36; the connecting cylinder 31 is fixedly connected with the mounting plate 32 through the through hole 36 and the connecting hole 40 by bolts; the number of the plurality of through holes 36 is 4.
Example 1
As shown in fig. 1-6, the invention provides a centrifugal fan, which comprises a volute 1 and an impeller 3, wherein the impeller 3 is provided with a driving motor, and the volute 1 is provided with an air inlet and an air outlet pipe 2; the impeller 3 comprises a mounting plate 32, a connecting cylinder 31 is arranged on the working surface of the mounting plate 32, and a plurality of arc-shaped long blades 33 are uniformly distributed on the outer circular surface of the connecting cylinder 31; the working surface of the mounting plate 32 is provided with arc-shaped short blades 34 between adjacent arc-shaped long blades 33, and a plurality of arc-shaped long blades 33 and arc-shaped short blades 34 are alternately arranged; a gap is formed between one end of the arc-shaped short blade 34 close to the connecting cylinder 31 and the connecting cylinder 31; a bracket 8 is arranged in the air outlet pipe 2, a muffler 9 is arranged on the bracket 8, and a plurality of transversely arranged silencing sheets 10 are arranged in the muffler 9; the tail end of the air outlet pipe 2 is detachably provided with a filter screen plate 7.
According to the centrifugal fan disclosed by the invention, the back surface of the arc-shaped short blade 34 is provided with the plurality of arc-shaped diversion trenches 37, so that the contact area between the arc-shaped short blade 34 and the air flow is increased, and the ventilation efficiency of the centrifugal fan is improved.
According to the centrifugal fan of the invention, the filter screen plate 7 comprises a rectangular frame 72, and a filter screen 71 is arranged in the rectangular frame 72; the rectangular frame 72 is detachably connected with the air outlet pipe 2 through screws 73.
According to the centrifugal fan of the invention, the plurality of arc-shaped long blades 33 and the connecting cylinder 31 are integrally formed; a clamping groove 38 is formed in the inner hole surface of the connecting cylinder 31 along the axial direction; the mounting plate 32 is fixedly provided with a guide cylinder 35, and the outer circular surface of the guide cylinder 35 is provided with a clamping strip 39 matched with the clamping groove 38; the guide cylinder 35 extends into the connecting cylinder 31, and the outer circular surface of the guide cylinder 35 is in contact fit with the inner circular surface of the connecting cylinder 31; the arc-shaped long blades 33 are in contact fit with the mounting plate 32; the mounting plate 32 is connected to a drive motor. When the invention is installed, the clamping groove 38 on the connecting cylinder 31 is clamped on the clamping strip 39 of the guide cylinder 35, so that the through hole 36 on the connecting cylinder 31 and the connecting hole 40 on the mounting plate 32 are positioned, and bolts penetrate through the through hole 36 and the connecting hole 40 to fix the connecting cylinder 31 and the mounting plate 32.
According to the centrifugal fan of the invention, the end surface of the connecting cylinder 31 is provided with a plurality of through holes 36, and the mounting plate 32 is provided with connecting holes 40 at the positions corresponding to the through holes 36; the connecting cylinder 31 is fixedly connected with the mounting plate 32 through the through hole 36 and the connecting hole 40 by bolts; the number of the plurality of through holes 36 is 4.
According to the centrifugal fan disclosed by the invention, the base 4 for supporting the volute 1 is arranged below the volute 1, a cavity is formed in the base 4 in a hollow mode, a plurality of semicircular supporting pieces 5 are arranged in the cavity, the semicircular supporting pieces 5 are made of rubber materials, the circular arc surface of each semicircular supporting piece 5 faces upwards, and a corresponding compression spring 6 is arranged between each semicircular supporting piece 5 and the inner wall of the cavity.
The vibration degree of the fan is reduced through the buffer action of the compression spring 6, so that the fan operates more stably, and the phenomenon that the centrifugal fan can generate larger mechanical vibration during working to loosen parts in the device and damage the fan is avoided effectively.
According to the invention, the plurality of arc long blades 33 and the arc short blades 34 are alternately arranged, so that a plurality of blade grid channels are formed as much as possible under the condition of not blocking the area of the air inlet, the separation vortex in the flow channel of the fan blade is greatly improved, and the working efficiency of the fan blade is improved.
According to the invention, the silencer is arranged at the air outlet pipe, so that noise caused by air flow at the outlet is reduced, and the environment-friendly design capacity of the fan with the silencer is improved.
The filter screen plate 7 is detachably arranged at the tail end of the air outlet pipe 2, dust and impurities in air flow are adsorbed on the filter screen 71, so that the dust and impurities are prevented from being directly discharged to influence the health of a user, and meanwhile, the user can detach the filter screen plate 7 to clean an air outlet after using the filter screen plate for a period of time.
Finally, it should be noted that: the above embodiments are merely preferred embodiments of the present invention to illustrate the technical solution of the present invention, and are not meant to limit the scope of the present invention; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions; in addition, the technical scheme of the invention is directly or indirectly applied to other related technical fields, and the technical scheme is included in the scope of the invention.
Claims (6)
1. The utility model provides a centrifugal fan, includes spiral case and impeller, the impeller disposes driving motor, have air intake and play tuber pipe on the spiral case, its characterized in that: the impeller comprises a mounting plate, a connecting cylinder is arranged on the working surface of the mounting plate, and a plurality of arc-shaped long blades are uniformly distributed on the outer circular surface of the connecting cylinder; the working surface of the mounting plate is provided with arc-shaped short blades between adjacent arc-shaped long blades, and a plurality of arc-shaped long blades and arc-shaped short blades are alternately arranged; a gap is formed between one end of the arc-shaped short blade close to the connecting cylinder and the connecting cylinder; a bracket is arranged in the air outlet pipe, a muffler is arranged on the bracket, and a plurality of transversely arranged muffler pieces are arranged in the muffler; the tail end of the air outlet pipe is detachably provided with a filter screen plate;
the plurality of arc-shaped long blades and the connecting cylinder are integrally formed; a clamping groove is formed in the inner hole surface of the connecting cylinder along the axial direction; a guide cylinder is fixedly arranged on the mounting plate, and a clamping strip matched with the clamping groove is arranged on the outer circular surface of the guide cylinder; the guide cylinder extends into the connecting cylinder, and the outer circular surface of the guide cylinder is in contact fit with the inner circular surface of the connecting cylinder; the arc long blade is in contact fit with the mounting plate.
2. The centrifugal fan according to claim 1, wherein: the spiral case is characterized in that a base used for supporting the spiral case is arranged below the spiral case, a cavity is formed in the base in a hollow mode, a plurality of semicircular supporting pieces are arranged in the cavity, the semicircular supporting pieces are made of rubber materials, the circular arc faces of the semicircular supporting pieces face upwards, and corresponding compression springs are arranged between each semicircular supporting piece and the inner wall of the cavity.
3. The centrifugal fan according to claim 1, wherein: the back of the arc-shaped short blade is provided with a plurality of arc-shaped diversion trenches.
4. The centrifugal fan according to claim 1, wherein: the filter screen plate comprises a rectangular frame, and a filter screen is arranged in the rectangular frame.
5. The centrifugal fan according to claim 4, wherein: the rectangular frame is detachably connected with the air outlet pipe through screws.
6. The centrifugal fan according to claim 1, wherein: the end face of the connecting cylinder is provided with a plurality of through holes, and the mounting disc is provided with connecting holes at the positions corresponding to the through holes; the connecting cylinder is fixedly connected with the mounting plate through bolts passing through the through holes and the connecting holes; the number of the through holes 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 CN109630436A (en) | 2019-04-16 |
| CN109630436B true CN109630436B (en) | 2023-06-06 |
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| 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6241997A (en) * | 1985-08-20 | 1987-02-23 | Matsushita Electric Ind Co Ltd | Electric blower |
| JPH02140495A (en) * | 1988-11-22 | 1990-05-30 | Matsushita Electric Ind Co Ltd | Electric blower |
| JPH0599199A (en) * | 1991-10-02 | 1993-04-20 | Hitachi Ltd | Centrifugal compressor |
| EP1744060A2 (en) * | 2005-07-12 | 2007-01-17 | Robert Bosch Corporation | Centrifugal fan assembly |
| TW201000768A (en) * | 2008-06-25 | 2010-01-01 | Yen Sun Technology Corp | External magnetic pole fan |
| CN104259793A (en) * | 2014-08-27 | 2015-01-07 | 张家港市海工船舶机械制造有限公司 | Impeller and method for manufacturing same |
| CN105570192A (en) * | 2016-02-29 | 2016-05-11 | 李锦标 | Fan impeller and machining method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2165276Y (en) * | 1993-07-01 | 1994-05-18 | 玉环县水泵厂 | High-efficiency vane wheel |
| DE102008043459A1 (en) * | 2008-11-04 | 2010-05-06 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Impeller for axial fan, has wing wheel hub and multiple impeller blades which are arranged at wing wheel hub in circumferential direction |
| JP5152226B2 (en) * | 2010-03-03 | 2013-02-27 | パナソニック株式会社 | Electric blower and electric vacuum cleaner using the same |
| CN201934380U (en) * | 2010-12-23 | 2011-08-17 | 美的集团有限公司 | Fan blade of ventilation fan |
| US8920128B2 (en) * | 2011-10-19 | 2014-12-30 | Honeywell International Inc. | Gas turbine engine cooling systems having hub-bleed impellers and methods for the production thereof |
| US10247195B2 (en) * | 2015-04-15 | 2019-04-02 | Sulzer Management Ag | Impeller for a centrifugal headbox feed pump |
| CN105020174B (en) * | 2015-07-23 | 2018-04-13 | 深圳市帝迈生物技术有限公司 | A kind of lung ventilator of small-sized low-noise centrifugal fan and the application centrifugal blower |
| CN107013496A (en) * | 2017-06-07 | 2017-08-04 | 江苏恒康机电有限公司 | A kind of special centrifugal fan of environmentally-friendly coating |
| CN206874518U (en) * | 2017-06-30 | 2018-01-12 | 四川筠连西南水泥有限公司 | A kind of centrifugal fan |
-
2019
- 2019-01-23 CN CN201910064218.6A patent/CN109630436B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6241997A (en) * | 1985-08-20 | 1987-02-23 | Matsushita Electric Ind Co Ltd | Electric blower |
| JPH02140495A (en) * | 1988-11-22 | 1990-05-30 | Matsushita Electric Ind Co Ltd | Electric blower |
| JPH0599199A (en) * | 1991-10-02 | 1993-04-20 | Hitachi Ltd | Centrifugal compressor |
| EP1744060A2 (en) * | 2005-07-12 | 2007-01-17 | Robert Bosch Corporation | Centrifugal fan assembly |
| TW201000768A (en) * | 2008-06-25 | 2010-01-01 | Yen Sun Technology Corp | External magnetic pole fan |
| CN104259793A (en) * | 2014-08-27 | 2015-01-07 | 张家港市海工船舶机械制造有限公司 | Impeller and method for manufacturing same |
| CN105570192A (en) * | 2016-02-29 | 2016-05-11 | 李锦标 | Fan impeller and machining method thereof |
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| Publication number | Publication date |
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| CN109630436A (en) | 2019-04-16 |
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