CN106351857A - Novel dust removing centrifugal fan - Google Patents

Novel dust removing centrifugal fan Download PDF

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Publication number
CN106351857A
CN106351857A CN201610902310.1A CN201610902310A CN106351857A CN 106351857 A CN106351857 A CN 106351857A CN 201610902310 A CN201610902310 A CN 201610902310A CN 106351857 A CN106351857 A CN 106351857A
Authority
CN
China
Prior art keywords
impeller
air outlet
spiral case
current collector
air
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.)
Pending
Application number
CN201610902310.1A
Other languages
Chinese (zh)
Inventor
李海宁
郭秀才
杨勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian University of Science and Technology
Original Assignee
Xian University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xian University of Science and Technology filed Critical Xian University of Science and Technology
Priority to CN201610902310.1A priority Critical patent/CN106351857A/en
Publication of CN106351857A publication Critical patent/CN106351857A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/08Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/05Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/053Shafts
    • F04D29/054Arrangements for joining or assembling shafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/05Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056Bearings
    • F04D29/0563Bearings cartridges
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/28Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/28Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30Vanes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226Fan casings
    • F04D29/4233Fan casings with volutes extending mainly in axial or radially inward direction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44Fluid-guiding means, e.g. diffusers
    • F04D29/441Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663Sound attenuation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

Abstract

The invention relates to a novel dust removing centrifugal fan and belongs to the technical field of fans. The novel dust removing centrifugal fan is characterized in that a motor is connected with an impeller by a transmission component; an air outlet is arranged above one side of a volute casing; an intercepting plate is arranged at the air outlet; a volute tongue is arranged in the volute casing; the included angle of the volute tongue is 6-8 degrees; the inclined angle of the inner side of the air outlet is 6-8 degrees; a diffuser is matched with the air outlet; a flow collector is arranged at the outer side of the impeller; an adjusting baffle plate is arranged at the outer side of the flow collector; an air blocking ring is arranged in the flow collector; a backward blade is arranged in the middle of the impeller. The novel dust removing centrifugal fan has the advantages that the structure design is reasonable, the operation is convenient, the flexibility is good, the stability is high and the flow collecting effect is good; due to an internal buffering structure, the wear for important parts is reduced and the benefit for prolonging the service life is achieved; the stability of compression and output of internal air is good, the impact between air and the impeller is less, the energy loss is less and the noise is also low, so that the efficiency is high; when the air is blown, the filtering effect is good; a brand-new filtering device is convenient to disassemble and assemble, so that the defects in the prior art are avoided, the practical performance is strong and the promotion and the application are convenient.

Description

A kind of new dust discharge centrifugal blower
Technical field
The present invention relates to a kind of new dust discharge centrifugal blower, belong to blower fan technical field.
Background technology
Blower fan is the custom abbreviation to gas compression and gas conveying machinery for the China, and usually said blower fan includes: ventilation Machine, aerator, wind-driven generator.Gas compression and gas conveying machinery be mechanical energy rotation be converted to gas pressure can and Kinetic energy, and the machinery that gas is transferred out.
The main structural components of blower fan be impeller, casing, air inlet, support, motor, belt pulley, shaft coupling, deafener, Driving member (bearing) etc..
Unpowered ventilation machine is the air thermal convection current being caused using natural wind and indoor and outdoor temperature difference, promotes turbine rotation Thus indoor stale hot-air is discharged using centrifugal force and underbalance effect.
Along with the fast-developing needs of society, application in national economy for the blower fan is more and more extensive, therefore blower fan The raising designing and manufacturing the not only development to blower fan field and technology has profound influence, and energy-saving and emission-reduction in fan design The thought scheme of damping etc. can extend to each production field;In gangue comprehensive utilization, new dry process grog technological transformation, metallurgy More than the 20 market potential field such as the energy-conservation of industry and comprehensive utilization of resources will have larger development prospect.
With the continuous aggravation of blower fan manufacturing competition, M&A integration and capital operation day between large fan manufacturing enterprise Become frequent, domestic outstanding blower fan manufacturing enterprise more and more payes attention to the research to industry market, particularly to industrial development environment Further investigation with buyers.
At present, the blower fan of a lot of simple form on the market, especially centrifugal fan, four walls of general air outlet are all Linear, it is not easy to the diffusion of internal gas flow, even if with the addition of bubbler, air-flow can be obstructed before entering bubbler;Existing Some current collectors are substantially cylindrical shape or cone;Meeting section bar vortex at impeller inlet, cylindrical shape is directly when air air inlet Effect is poor, and conical length is too short, and effect is also bad;A lot of impellers adopt forward-type blade, the direction of bending and gas Movement locus are contrary, and gas is changed direction by force, and therefore its noise and energy loss is larger, inefficiency.
For environmental protection, much the exit of centrifugal blowers increased drainage screen now, the filtration set up but lock in market Net is mostly to be fixed, and after a period of time, drainage screen can affect air-out, and the dust of lock contamination above can affect environment, Play retroaction it would be highly desirable to improve.
Content of the invention
Present invention aims to the defect of prior art and deficiency, provide a kind of reasonable in design, user Just, a kind of new dust discharge centrifugal blower of good stability.
For achieving the above object, the technical solution used in the present invention is: it comprises base, spiral case, impeller, motor, transmission Assembly, air outlet;It also comprises intercepter plate, bubbler, current collector, controllable register;Described spiral case is arranged on the top of base; It is provided with impeller in described spiral case;Described motor is connected with impeller by transmission component;The top of described spiral case side sets There is air outlet;Described air outlet is provided with intercepter plate;It is provided with snail tongue in spiral case;The angle of described snail tongue is 6-8 °;Described Air outlet inside inclination angle be 6-8 °;Described bubbler and air outlet cooperate;The outside of described impeller is provided with collection Stream device;The outside of described current collector is provided with controllable register;It is provided with wind loop in described current collector, can mitigate at vortex Vortex, control flow backwards area refluence;The centre of described impeller is provided with backward type blade;And backward type blade before and after side divide It is not provided with shroud and hub disk;Described transmission component is made up of bearing block one, bearing block two and shaft joint;Described bearing block First, bearing block two is separately positioned on the both sides of impeller;Described shaft joint is arranged between bearing block two and motor.
Preferably, being provided with a circle hollow boss in the middle of described bubbler;Defecator is movably embedded in bubbler, And the periphery of defecator is cooperated with hollow boss;The outside of described hollow boss is equipped with locking member, defecator Drawback present in prior art can be avoided with easy disassembly in the presence of locking member.
Preferably, the inwall of described intercepter plate is provided with buffering projection;Described buffering is raised to be arc convex, is used for The impact to intercepter plate for the air-flow of cache operating.
Preferably, described shaft joint replaces with belt pulley.
Preferably, described current collector is cone arc current collector, there is preferable catchment effect, with cylinder in prior art Shape or cone are compared, better.
Preferably, the inwall of described spiral case is provided with array strip bulge, for the impulsive force of buffer gas flow, reduce The impact to spiral case for the air-flow, thus extend the service life of spiral case.
Preferably, described spiral case bottom is provided with vibration measuring instrument, for detect impeller in spiral case within vibration feelings Condition, is easy to overhaul in time.
The operation principle of the present invention: adjust into wind regime by controllable register, pass through current collector by entrance simultaneously Air-flow is assembled, and during afflux, is reduced by wind loop and is vortexed and controls refluence it is ensured that the effect of afflux, by the leaf within spiral case Wheel by the gas compression of inspiration and exports, and the blade of backward type contributes to compression and the output of internal gas, and in air outlet It is provided with inclination angle, is conducive to the discharge of gas, bubbler is used for improving the efficiency of gas diffusion, also function to the work filtering simultaneously With, and defecator can dismount, and be easy to clean, motility is good, spiral case and intercepter plate are all provided with buffer structure, reduce high The gas of speed operating and the abrasion of spiral case and intercepter plate, are conducive to extending their service life.
After said structure, present invention has the beneficial effect that a kind of new dust discharge centrifugal blower of the present invention, structure Reasonable in design, easy to operate, motility is good, and stability is high, and catchment effect is good, and inside has buffer structure, reduces to important The abrasion of part, is conducive to increasing the service life;And internal gas compression and the good stability exporting, the shock of gas and impeller Few, the little energy of loss, noise is also little, therefore efficiency high, good filtration effect during air-out, and brand-new defecator is conveniently torn open Dress, it is to avoid drawback present in prior art, Practical Performance is strong, easy to utilize.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, also may be used So that other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the schematic diagram of snail tongue angle c in the present invention;
Fig. 3 is the schematic diagram flowing backwards area in current collector in the present invention;
Fig. 4 is the a-a schematic diagram of Fig. 3, is also the schematic diagram of vortex;
Fig. 5 is the a-a schematic diagram of Fig. 3, is also the schematic diagram of wind loop;
Fig. 6 is the schematic diagram of current collector in the present invention;
Fig. 7 is the schematic diagram of impeller in the present invention;
Fig. 8 is the simple diagram that in the present invention, motor is connected with impeller;
Fig. 9 is the schematic diagram of bubbler in the present invention;
Figure 10 is the schematic diagram of intercepter plate in the present invention;
Description of reference numerals:
Base 1, spiral case 2, impeller 3, motor 4, transmission component 5, air outlet 6, intercepter plate 7, bubbler 8, current collector 9, tune Section baffle plate 10, bearing block 1, bearing block 2 52, shaft joint 53, wind loop 91, vortex 92, refluence area 93, hollow boss 81st, defecator 82, locking member 83, snail tongue 21, buffering projection 71, angle c.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
Referring to as Fig. 1 -- shown in Figure 10, this specific embodiment comprises base 1, spiral case 2, impeller 3, motor 4, transmission group Part 5, air outlet 6;It also comprises intercepter plate 7, bubbler 8, current collector 9, controllable register 10;Described spiral case 2 is arranged on base 1 Top;It is provided with impeller 3 in described spiral case 2;Described motor 4 is connected with impeller 3 by transmission component 5;Described spiral case 2 The top of side is provided with air outlet 6;It is provided with intercepter plate 7 at described air outlet 6;It is provided with snail tongue 21 in spiral case 2;Described snail tongue 21 angle c is 6-8 °;The inclination angle of described air outlet 6 inner side is 6-8 °;Described bubbler 8 and air outlet 6 cooperate; The outside of described impeller 3 is provided with current collector 9;The outside of described current collector 9 is provided with controllable register 10;Described current collector 9 In be provided with wind loop 91, can mitigate the vortex at vortex 92, control the refluence flowing backwards area 93;The centre of described impeller 3 It is provided with backward type blade 31;And the side in front and back of backward type blade 31 is respectively equipped with shroud 32 and hub disk 33;Described transmission component 5 It is made up of bearing block 1, bearing block 2 52 and shaft joint 53;Described bearing block 1, bearing block 2 52 are separately positioned on leaf The both sides of wheel 3;Described shaft joint 53 is arranged between bearing block 2 52 and motor 4.
Wherein, it is provided with a circle hollow boss 81 in the middle of described bubbler 8;Defecator 82 is movably embedded in bubbler 8 In, and the periphery of defecator 82 cooperated with hollow boss 81;The outside of described hollow boss 81 is equipped with locking member 83, defecator 82 can avoid drawback present in prior art with easy disassembly in the presence of locking member 83;Described The inwall of intercepter plate 7 is provided with buffering raised 71;Described buffering raised 71 is arc convex, for the air-flow of cache operating Impact to intercepter plate 7;Described shaft joint 53 replaces with belt pulley;Described current collector 9 is cone arc current collector, has preferably Catchment effect, compared with cylindrical shape in prior art or cone, better;The inwall of described spiral case 2 is provided with number Group strip bulge, for the impulsive force of buffer gas flow, reduces the impact to spiral case 2 for the air-flow, thus extending the service life of spiral case; Described spiral case 2 bottom is provided with vibration measuring instrument, for detect impeller 3 in spiral case 2 within Vibration Condition, be easy to examine in time Repair.
The operation principle of this specific embodiment: adjust into wind regime by controllable register 10, pass through current collector 9 simultaneously The air-flow of entrance is assembled, during afflux, is reduced by wind loop 91 and be vortexed and control refluence it is ensured that the effect of afflux, pass through Impeller 3 within spiral case 2 by the gas compression of inspiration and exports, the blade of backward type contribute to the compression of internal gas with defeated Go out, and be provided with inclination angle at air outlet 6, be conducive to the discharge of gas, bubbler 8 is used for improving the efficiency of gas diffusion, with When also function to the effect filtered, and defecator can dismount, and be easy to clean, motility is good, and spiral case 2 and intercepter plate 7 all set Put buffer structure, reduced the abrasion of the gas running up and spiral case 2 and intercepter plate 7, be conducive to extending their use longevity Life.
This specific embodiment reasonable in design, easy to operate, motility is good, and stability is high, and catchment effect is good, internal There is buffer structure, reduce the abrasion to vitals, be conducive to increasing the service life;And internal gas compression and output Good stability, gas is few with the shock of impeller, the little energy of loss, and noise is also little, therefore efficiency high, filter effect during air-out Good, and brand-new defecator easy disassembly, it is to avoid drawback present in prior art, Practical Performance is strong, and being easy to promote should With.
The above, only in order to technical scheme to be described and unrestricted, those of ordinary skill in the art are to this Other modifications or equivalent that bright technical scheme is made, without departing from the spirit and scope of technical solution of the present invention, All should cover in the middle of scope of the presently claimed invention.

Claims (7)

1. a kind of new dust discharge centrifugal blower, it comprises base, spiral case, impeller, motor, transmission component, air outlet;Its feature exists In: it also comprises intercepter plate, bubbler, current collector, controllable register;Described spiral case is arranged on the top of base;Described snail It is provided with impeller in shell;Described motor is connected with impeller by transmission component;The top of described spiral case side is provided with air outlet; Described air outlet is provided with intercepter plate;It is provided with snail tongue in spiral case;The angle of described snail tongue is 6-8 °;In described air outlet The inclination angle of side is 6-8 °;Described bubbler and air outlet cooperate;The outside of described impeller is provided with current collector;Described The outside of current collector is provided with controllable register;It is provided with wind loop in described current collector;The centre of described impeller is provided with backward type Blade;And the side in front and back of backward type blade is respectively equipped with shroud and hub disk;Described transmission component is by bearing block one, bearing block two With shaft joint composition;Described bearing block one, bearing block two are separately positioned on the both sides of impeller;Described shaft joint is arranged on axle Between bearing two and motor.
2. a kind of new dust discharge centrifugal blower according to claim 1 it is characterised in that: be provided with the middle of described bubbler One circle hollow boss;Defecator is movably embedded in bubbler, and the periphery of defecator is cooperated with hollow boss;Institute The outside of the hollow boss stated is equipped with locking member.
3. a kind of new dust discharge centrifugal blower according to claim 1 it is characterised in that: the inwall of described intercepter plate sets There is buffering raised;Described buffering is raised to be arc convex.
4. a kind of new dust discharge centrifugal blower according to claim 1 it is characterised in that: described shaft joint replaces with skin Belt wheel.
5. a kind of new dust discharge centrifugal blower according to claim 1 it is characterised in that: described current collector be cone arc Current collector.
6. a kind of new dust discharge centrifugal blower according to claim 1 it is characterised in that: set on the inwall of described spiral case There is array strip bulge.
7. a kind of new dust discharge centrifugal blower according to claim 1 it is characterised in that: described spiral case bottom is provided with survey Vibration Meter table.
CN201610902310.1A 2016-10-17 2016-10-17 Novel dust removing centrifugal fan Pending CN106351857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610902310.1A CN106351857A (en) 2016-10-17 2016-10-17 Novel dust removing centrifugal fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610902310.1A CN106351857A (en) 2016-10-17 2016-10-17 Novel dust removing centrifugal fan

Publications (1)

Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109424565A (en) * 2017-08-21 2019-03-05 林内株式会社 Centrifugal fan

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201539450U (en) * 2009-06-02 2010-08-04 上海宝田新型建材有限公司 Filter unit for slag sealing blower
CN201982335U (en) * 2011-03-23 2011-09-21 浙江志江风机有限公司 Low-noise and high-pressure centrifugal fan
CN203548278U (en) * 2013-11-14 2014-04-16 浙江志江风机有限公司 Centrifugal fan
US20140321988A1 (en) * 2013-04-29 2014-10-30 Dresser Inc. Device for modifying flow parameters of working fluid exiting a compressor device
CN204476871U (en) * 2015-01-27 2015-07-15 浙江理工大学 A kind of centrifugal blower slip ring adding anti-vortex ring
CN204572515U (en) * 2015-04-17 2015-08-19 浙江风神风机制造有限公司 A kind of air-conditioning duct cleaning blower fan
WO2016036119A1 (en) * 2014-09-03 2016-03-10 코웨이 주식회사 Centrifugal blower
CN206129657U (en) * 2016-10-17 2017-04-26 西安科技大学 Novel dust exhaust centrifugal fan

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201539450U (en) * 2009-06-02 2010-08-04 上海宝田新型建材有限公司 Filter unit for slag sealing blower
CN201982335U (en) * 2011-03-23 2011-09-21 浙江志江风机有限公司 Low-noise and high-pressure centrifugal fan
US20140321988A1 (en) * 2013-04-29 2014-10-30 Dresser Inc. Device for modifying flow parameters of working fluid exiting a compressor device
CN203548278U (en) * 2013-11-14 2014-04-16 浙江志江风机有限公司 Centrifugal fan
WO2016036119A1 (en) * 2014-09-03 2016-03-10 코웨이 주식회사 Centrifugal blower
CN204476871U (en) * 2015-01-27 2015-07-15 浙江理工大学 A kind of centrifugal blower slip ring adding anti-vortex ring
CN204572515U (en) * 2015-04-17 2015-08-19 浙江风神风机制造有限公司 A kind of air-conditioning duct cleaning blower fan
CN206129657U (en) * 2016-10-17 2017-04-26 西安科技大学 Novel dust exhaust centrifugal fan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109424565A (en) * 2017-08-21 2019-03-05 林内株式会社 Centrifugal fan
CN109424565B (en) * 2017-08-21 2022-05-31 林内株式会社 Centrifugal fan

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Application publication date: 20170125