CN103306996A - High-flow backward centrifugal fan - Google Patents
High-flow backward centrifugal fan Download PDFInfo
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- CN103306996A CN103306996A CN2013102173960A CN201310217396A CN103306996A CN 103306996 A CN103306996 A CN 103306996A CN 2013102173960 A CN2013102173960 A CN 2013102173960A CN 201310217396 A CN201310217396 A CN 201310217396A CN 103306996 A CN103306996 A CN 103306996A
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- blower
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- motor
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Abstract
The invention relates to a high-flow backward centrifugal fan and belongs to the technical field of centrifugal fans. The high-flow backward centrifugal fan comprises a fan volute and a fan blade disk, wherein the fan volute is provided with a fan blade disk cavity, an air inlet and an air outlet; the fan blade disk comprises left and right blade fixing disks and a group of circular arc blades; an air guide port is formed in the center of the left blade fixing disk; the right blade fixing disk is connected with a motor shaft; the air inlet corresponds to the air guide port; and the air outlet corresponds to the circular arc blades. The high-flow backward centrifugal fan is characterized by further comprising a chassis and a motor protection cover, wherein the fan volute is fixed at one end of the chassis; a motor is supported and fixed at the other end of the chassis; the motor protection cover covers the motor; an air-inlet air guide sleeve is fixed on the fan volute in a position corresponding to the air inlet; one end of the air-inlet air guide sleeve extends out of the fan blade disk cavity of the fan volute and the other end of the air-inlet air guide sleeve extends into the fan blade disk cavity; and the air-inlet air guide sleeve corresponds to the air guide port. The high-flow backward centrifugal fan can meet the requirements on large air volume, low noise and high efficiency, has a simple structure, is beneficial to manufacturing, assembly and maintenance in the using process, shows safety and ensures a stable working effect of the fan blade disk.
Description
Technical field
The invention belongs to the centrifugal blower technical field, be specifically related to a kind of strong backward centrifugal blower.
Background technique
The above mentioned by force concept of backward " by force " refers to that large flow is Wind Volume, and the concept of " backward " refers to that impeller adopts backward centrifugal structure, and blade is circular arc, to this, can be called the centrifugal cutter that to avoid fibril aggregation and be provided with the explanation of the 0002nd section in specification of the centrifugal blower of this centrifugal cutter referring to Chinese invention patent application publication No. CN102606497A, name.This centrifugal blower requirement air quantity is large, noise is little and efficient is high, can process unit with the peculiar smell of tobacco business, medication chemistry industry and match, and also can be widely used in such as the air conditioner ventilation occasion.
About the technical information of strong backward centrifugal blower except aforesaid CN102606497A, in disclosed Chinese patent literature, be also shown in all CN202707622U(double-source controlled electrical locomotive traction blower fan) and the cooling blower of CN102536857A(traction converter of high-speed electric locomotive), etc.
Be not limited to the above-mentioned patented technology scheme that exemplifies and have following logical fraud: the one, the structure relative complex, for example CN102606497A need to adopt one group of primary blades and one group of auxiliary blade corresponding with primary blades, and for example CN102536857A need to be by arranging the cotton noise decrease of eliminating the noise, thus give design to a certain extent, manufacturing and installation cause trouble; The 2nd, because motor is lacked necessary protection, thereby in use have the anxiety of losing safety; The 3rd, because motor is connected with horizontal boom state and motor volute, thereby lose stability to motor bearing, thereby in use affect the rotation concentricity of blower fan leaf dish; The 4th, still be not enough to reach the effect that makes the industry expectation aspect Wind Volume, low noise and the high efficiency.In view of this, be necessary to be improved, for this reason, the applicant has done useful design, and technological scheme described below produces under this background.
Summary of the invention
Task of the present invention is to provide a kind of and helps simplified structure and use to embody and conveniently make and install and safeguard, be conducive to motor implemented to cover to protect and use and ensure safety, be of value to the stability that guarantees motor and use to make the existing desirable movement effects of blower fan leaf disk body and have and be convenient to satisfy ideally the strong backward centrifugal blower that Wind Volume, low noise and high efficiency require.
Task of the present invention is finished like this, a kind of strong backward centrifugal blower, comprise a volute of blower, this volute of blower has a blower fan leaf dish chamber, an intake grill and an exhaust outlet, intake grill and exhaust outlet all communicate with blower fan leaf dish chamber, and form each other the position relationship of the L font of English alphabet on volute of blower into and out of the air port; One blower fan leaf dish and a motor, blower fan leaf dish comprises that blade is left, right fixed disk and one group of curved blade, the central authorities of the left fixed tray of blade consist of an air guide hole, the blade right fixed disk is fixedly connected with the motor shaft of motor, one group of curved blade is left around described blade with the interval state, the circumferencial direction of right fixed disk is fixed on a left side, between the lobus dexter sheet fixed tray, described intake grill is corresponding with described air guide hole, and described exhaust outlet is corresponding with curved blade, be characterised in that and also include a chassis and a motor shield, described volute of blower is fixed on an end on chassis, described motor bearing is fixed on the other end on chassis, the motor shield hood guard is on motor, on volute of blower and in the position corresponding to described intake grill, be fixed with an intake grill air guide sleeve, one end of this intake grill air guide sleeve leans out the blower fan leaf dish chamber of volute of blower, and the other end is stretched in the blower fan leaf dish chamber, and corresponding with described air guide hole.
In a specific embodiment of the present invention, on described volute of blower and the corresponding both sides that are positioned at the top of volute of blower respectively be fixed with a hanger.
In another specific embodiment of the present invention, be fixed with at least one pair of spiral case seat in the bottom of described volute of blower, a described end on spiral case seat and described chassis is fixed.
In another specific embodiment of the present invention, described volute of blower is fixed with a volute of blower fixed tray that is used for the sealing of described blower fan leaf dish chamber towards a side of described motor, described motor is fixed on the motor cabinet, motor cabinet is fixed on the described the other end on described chassis, and described motor shield and motor cabinet are fixed.
In another specific embodiment of the present invention, be fixed with one group of fixed tray leg at described volute of blower fixed tray towards a side of described motor, fixed tray leg and described motor cabinet are fixed.
Also have in the specific embodiment of the present invention, offer radiation hole at described motor shield.
More of the present invention and in specific embodiment, consisting of at the middle position of described blade right fixed disk has an axle sleeve, and the axle sleeve hole of this axle sleeve and described motor shaft are fixed.
In of the present invention and then specific embodiment, be fixed with an axle sleeve block plate that is used for stopping described axle sleeve at described motor the tip of the axis.
Technological scheme provided by the invention is with respect to one of technique effect of prior art, since the self structure of blower fan leaf dish rationally and in blower fan leaf dish chamber with volute of blower between cooperate rationally, thereby can satisfy Wind Volume, low noise and high efficiency requirement; Two because overall structure is terse, thus be conducive to make, assemble and use in maintenance; Three owing to can motor be covered by motor shield and protect, thereby can embody Security; Four because motor bearing is fixed on the chassis, thereby can ensure the working stability effect of blower fan leaf dish.
Description of drawings
Fig. 1 is structural drawing of the present invention.
Fig. 2 is the sectional view of Fig. 1.
Embodiment
See also Fig. 1 and Fig. 2, provided a base 4, at the use state, this base 4 is supported on and uses on the on-the-spot terrace or on the support of separately configuration.One volute of blower 1, this volute of blower 1 have a blower fan leaf dish chamber 11, and this blower fan leaf dish chamber 11 also can be described as volute chamber.Take at present by location status illustrated in figures 1 and 2 as example, the left side of volute of blower 1 consists of an intake grill 12, and in the rear side formation one exhaust outlet 13 is arranged, should be into and out of air port 12,13 positions on volute of blower 1 form the relation of the L font of English alphabet each other, and 12,13 all communicate with blower fan leaf dish chamber 11 into and out of the air port.Be fixed with an intake grill air guide sleeve 14 at the position corresponding to intake grill 12, one end of this intake grill air guide sleeve 14 is that the left side that the left end of shown position state leans out volute of blower 1 namely leans out blower fan leaf dish chamber 11, and the right-hand member of intake grill air guide sleeve 14 is stretched in the blower fan leaf dish chamber 11.Corresponding both sides at the top of volute of blower 1 respectively are fixed with a hanger 15, and offer a boathook hole 151 at each hanger 15, can be easily by hanger 15 with volute of blower 1 handling to aforementioned chassis 4.Bottom at volute of blower 1 preferably is fixed with a pair of spiral case seat 16 in the mode that is welded and fixed, in this a pair of spiral case seat 16 one of them (diagram left side one) spiral case seat 16 is fixing with chassis 4 by spiral case seat set screw 161, and another (diagram right side one) the spiral case seat 16 in a pair of spiral case seat 16 is directly found a place on chassis 4.Right side at volute of blower 1 namely is fixed with a volute of blower fixed tray 17 towards a side of the following motor that also will describe 3 with one group of fixed tray screw 172, by the right side sealing of this volute of blower fixed tray 17 with blower fan leaf dish chamber 11.In addition, namely back to the side formation in blower fan leaf dish chamber 11 one group of fixed tray leg 171 is arranged at volute of blower fixed tray 17 towards a side of motor 3.
Provided blower fan leaf dish 2 and an aforesaid motor 3, the motor shaft 31 of motor 3 passes volute of blower fixed tray 17 and fixes with it for blower fan leaf dish 2, motor 3 adopts motor set screws 33 to be fixed on the motor cabinet 32, and motor cabinet 32 to be fixed on the other end on chassis 4 be right-hand member illustrated in figures 1 and 2.Aforesaid fixed tray leg 171 is fixing by screw and motor cabinet 32.
Aforesaid blower fan leaf dish 2 comprises that blade is left, right fixed disk 21,22 and one groups of curved blades 23, the central authorities of the left fixed tray 21 of blade consist of an air guide hole 211, the right-hand member of aforesaid intake grill air guide sleeve 14 is insinuated in the air guide hole 211 (Fig. 2 shows), the middle position of blade right fixed disk 22 consists of an axle sleeve 221, the axle sleeve hole 2211 of this axle sleeve 221 is preferred fixing by the flat key 311 on flat key means of fixation and the aforementioned electric arbor 31, and this axle sleeve 221 has an axle sleeve dish 2212, and this axle sleeve dish 2212 adopts screw 22121 fixing with blade right fixed disk 22 at blade right fixed disk 22 towards a side of aforementioned volute of blower fixed tray 17.One group of curved blade 23 is fixed between the left and right fixed tray 21 of blade, 22 with the interval state around the left and right fixed tray 21 of blade, 22 circumferencial direction, and corresponding with aforesaid exhaust outlet 13.
In order to prevent axle sleeve 221 motor shaft 31 of scurrying out, therefore the distal end faces at motor shaft 31 is fixed with an axle sleeve block plate 311 with axle sleeve block plate screw 3111.
Please continue to see Fig. 1 and Fig. 2, be provided with one in the position corresponding to aforesaid motor 3 and be used for motor 3 is covered the motor shield 5 that protects, these motor shield 5 covers are put outside motor 3 and with aforesaid motor cabinet 32 and are fixed.Heat when making motor 3 work distributes to the external world, therefore offers radiation hole 51 at motor shield 5.
By said structure as can be known, the width design in the present invention and blower fan leaf dish chamber 11 becomes remarkable width greater than blower fan leaf dish 2, i.e. remarkable width greater than curved blade 23, thereby air flow channel increases, the air friction degree is diminished, not only help to increase air output, and be conducive to reduce noise.
During use, motor 3 work drive blower fan leaf dish 2 by motor shaft 31, introduce air by intake grill 12, and draw with the pipeline that exhaust outlet 13 connects from exhaust outlet 13 warps.To be used for smell that tobacco business eliminates the production scene as example, the air in Workplace such as workshop is introduced and is drawn by exhaust outlet 13 from intake grill 12.
Claims (8)
1.
A kind of strong backward centrifugal blower, comprise a volute of blower (1), this volute of blower (1) has a blower fan leaf dish chamber (11), an intake grill (12) and an exhaust outlet (13), intake grill (12) and exhaust outlet (13) all communicate with blower fan leaf dish chamber (11), and form each other the position relationship of the L font of English alphabet on volute of blower (1) into and out of air port (12,13); One blower fan leaf dish (2) and a motor (3), blower fan leaf dish (2) comprises that blade is left, right fixed disk (21,22) and one group of curved blade (23), the central authorities of the left fixed tray of blade (21) consist of an air guide hole (211), blade right fixed disk (22) is fixedly connected with the motor shaft (31) of motor (3), one group of curved blade (23) is left around described blade with the interval state, right fixed disk (21,22) circumferencial direction is fixed on a left side, lobus dexter sheet fixed tray (21,22) between, described intake grill (12) is corresponding with described air guide hole (211), and described exhaust outlet (13) is corresponding with curved blade (23), a chassis (4) and a motor shield (5) have been characterized by further comprising, described volute of blower (1) is fixed on an end on chassis (4), described motor (3) supporting is fixed on the other end of chassis (4), motor shield (5) hood guard is on motor (3), on volute of blower (1) and in the position corresponding to described intake grill (12), be fixed with an intake grill air guide sleeve (14), one end of this intake grill air guide sleeve (14) leans out the blower fan leaf dish chamber (11) of volute of blower (1), and the other end is stretched in the blower fan leaf dish chamber (11), and corresponding with described air guide hole (211).
2.
Strong backward centrifugal blower according to claim 1 is characterized in that corresponding both sides upper at described volute of blower (1) and that be positioned at the top of volute of blower (1) respectively are fixed with a hanger (15).
3.
Strong backward centrifugal blower according to claim 1 is characterized in that being fixed with at least one pair of spiral case seat (16) in the bottom of described volute of blower (1), and spiral case seat (16) is fixed with a described end on described chassis (14).
4.
Strong backward centrifugal blower according to claim 1, it is characterized in that described volute of blower (1) is fixed with a volute of blower fixed tray (17) that is used for described blower fan leaf dish chamber (11) sealing towards a side of described motor (3), described motor (3) is fixed on the motor cabinet (32), motor cabinet (32) is fixed on the described the other end on described chassis (4), and described motor shield (5) is fixing with motor cabinet (32).
5.
Strong backward centrifugal blower according to claim 4, it is characterized in that being fixed with one group of fixed tray leg (171) at described volute of blower fixed tray (17) towards a side of described motor (3), fixed tray leg (171) is fixing with described motor cabinet (32).
6.
According to claim 1 or 4 described strong backward centrifugal blowers, it is characterized in that offering radiation hole (51) at described motor shield (5).
7.
Strong backward centrifugal blower according to claim 1, it is characterized in that in the middle position formation of described blade right fixed disk (22) axle sleeve (221) being arranged, the axle sleeve hole (2211) of this axle sleeve (221) is fixing with described motor shaft (31).
8.
Strong backward centrifugal blower according to claim 7 is characterized in that being fixed with one for an axle sleeve block plate (311) that stops described axle sleeve (221) at the end of described motor shaft (31)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102173960A CN103306996A (en) | 2013-06-04 | 2013-06-04 | High-flow backward centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102173960A CN103306996A (en) | 2013-06-04 | 2013-06-04 | High-flow backward centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103306996A true CN103306996A (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102173960A Pending CN103306996A (en) | 2013-06-04 | 2013-06-04 | High-flow backward centrifugal fan |
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| Country | Link |
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| CN (1) | CN103306996A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141618A (en) * | 2014-08-20 | 2014-11-12 | 中国船舶重工集团公司第七0四研究所 | Decoupling testing device for centrifugal pump |
| CN109611356A (en) * | 2018-11-30 | 2019-04-12 | 泛仕达机电股份有限公司 | A kind of backward centrifugal blower |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0692637A1 (en) * | 1994-06-13 | 1996-01-17 | Carrier Corporation | Centrifugal fan inlet orifice and impeller assembly |
| CN2622442Y (en) * | 2003-06-04 | 2004-06-30 | 常熟市鼓风机有限公司 | Centrifugal fan |
| CN2819603Y (en) * | 2005-07-31 | 2006-09-20 | 王北方 | Comprehensive shield of electric motor |
| CN200958498Y (en) * | 2006-08-09 | 2007-10-10 | 常熟市鼓风机有限公司 | Dust-filtering fan |
| CN101392420A (en) * | 2008-10-15 | 2009-03-25 | 常熟市鼓风机有限公司 | Energy-saving fan of ring spinning frame |
| CN201448261U (en) * | 2009-07-11 | 2010-05-05 | 周楚桃 | Centrifugal blower |
| CN203297113U (en) * | 2013-06-04 | 2013-11-20 | 常熟市鼓风机有限公司 | Powerful backward centrifugal fan |
-
2013
- 2013-06-04 CN CN2013102173960A patent/CN103306996A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0692637A1 (en) * | 1994-06-13 | 1996-01-17 | Carrier Corporation | Centrifugal fan inlet orifice and impeller assembly |
| CN2622442Y (en) * | 2003-06-04 | 2004-06-30 | 常熟市鼓风机有限公司 | Centrifugal fan |
| CN2819603Y (en) * | 2005-07-31 | 2006-09-20 | 王北方 | Comprehensive shield of electric motor |
| CN200958498Y (en) * | 2006-08-09 | 2007-10-10 | 常熟市鼓风机有限公司 | Dust-filtering fan |
| CN101392420A (en) * | 2008-10-15 | 2009-03-25 | 常熟市鼓风机有限公司 | Energy-saving fan of ring spinning frame |
| CN201448261U (en) * | 2009-07-11 | 2010-05-05 | 周楚桃 | Centrifugal blower |
| CN203297113U (en) * | 2013-06-04 | 2013-11-20 | 常熟市鼓风机有限公司 | Powerful backward centrifugal fan |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141618A (en) * | 2014-08-20 | 2014-11-12 | 中国船舶重工集团公司第七0四研究所 | Decoupling testing device for centrifugal pump |
| CN104141618B (en) * | 2014-08-20 | 2016-04-13 | 中国船舶重工集团公司第七0四研究所 | The decoupling zero testing apparatus of centrifugal pump |
| CN109611356A (en) * | 2018-11-30 | 2019-04-12 | 泛仕达机电股份有限公司 | A kind of backward centrifugal blower |
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Application publication date: 20130918 |