CN2567382Y - Channel-type axial back-flow fan - Google Patents

Channel-type axial back-flow fan Download PDF

Info

Publication number
CN2567382Y
CN2567382Y CN 02268710 CN02268710U CN2567382Y CN 2567382 Y CN2567382 Y CN 2567382Y CN 02268710 CN02268710 CN 02268710 CN 02268710 U CN02268710 U CN 02268710U CN 2567382 Y CN2567382 Y CN 2567382Y
Authority
CN
China
Prior art keywords
impeller
lobe dish
blade
dish
suction
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.)
Expired - Fee Related
Application number
CN 02268710
Other languages
Chinese (zh)
Inventor
林钧浩
Original Assignee
林钧浩
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 林钧浩 filed Critical 林钧浩
Priority to CN 02268710 priority Critical patent/CN2567382Y/en
Application granted granted Critical
Publication of CN2567382Y publication Critical patent/CN2567382Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model discloses a channel-type axial back-flow fan, belonging to the technical field of the air purification. The channel-type axial back-flow fan comprises a housing, impellers, an air inlet of the fan and an air outlet of the fan. The impeller is provided with an impeller disc. The channel-type axial back-flow fan is characterized in that the channel-type axial back-flow fan is also provided with a back flow suction opening and a suction guide flow groove; the back flow suction opening is arranged on the axial side wall of the engine body, and is directly communicated with an air channel at the outer side of the impeller in the engine body; a suction guide flow groove is arranged at the edge of the side wall of the engine body; the side wall of the suction guide flow groove is connected with the side wall of the engine body; the suction guide flow groove is bulged out of the side wall of the engine body; the inner cavity of the suction guide flow groove is communicated with an air channel at the outer side of the impeller in the engine body and a back flow suction opening. Compared with the prior fan, the utility model has the advantages of strong pumping power, big flow quantity, less energy consumption, high efficiency, plentiful functions, etc. The channel-type axial back-flow fan can effectively lighten the corrosive wearing degree of the flowing component in the engine body, and is an ideal changed product of the fan.

Description

The axial rear flow fan of slot type
Technical field
The utility model relates to a kind of axial rear flow fan of slot type of handling dusty gas, belongs to the air purifying process field.
Background technique
The blower fan of people's use now all is the suction function suction dusty gas material that relies on impeller to form in air inlet; the suction capactity of existing ventilator intake grill is poor; and the dusty gas material must pass through impeller; and dusty gas is when the impeller; under action of centrifugal force, can isolate a large amount of grease contamination materials and stick to the body inboard; cause the body passage component seriously polluted; simultaneously; the dust grains of sand in the dusty gas impeller that also can rub; cause damage in impeller serious; if what be sucked is the pH value gaseous matter; also can cause impeller and other passage components by heavy corrosion; in addition, existing various blower fan function singlenesses, using scope is narrow.
Summary of the invention
The purpose of this utility model is to provide a kind of suction capactity strong, and gas flow is big, and power consumption is few, the efficient height, and function is many, and can alleviate the interior passage component of body by the axial rear flow fan of slot type stained and corrosion.
The utility model is realized by the following technical programs:
The axial rear flow fan of a kind of slot type, include casing, impeller, air inlet, fan outlet, impeller is provided with the leaf dish, its special way is, also be provided with back stream and inhale thing mouth and suction guiding gutter, back stream inhale that the thing mouth is located on the body axial side wall and with body in impeller outside air flue directly be communicated with, the suction guiding gutter is located on the body edge sidewall, the sidewall of suction guiding gutter connects with organism sidewall, the suction guiding gutter protrudes from organism sidewall, and its inner chamber is inhaled the thing mouth with the outside of the impeller in body air flue with back stream and is communicated with.
Casing of the present utility model can be designed as multiple different shape, as scroll casing shape, tubular or the like, its impeller radial outside air flue can be to turn to into radial dilatation or axial expansion along impeller, also can turn to into radial-axial along impeller all expands, also can be from axis to a side along impeller shaft to become expansion towards the body opposite side, or from axis to a side along impeller shaft to becoming the uniform section tubular towards the body opposite side, or the like.The impeller of blower fan can directly adopt (mainly being centrifugal) of existing blower fan, impeller that also can the special use of otherwise designed the utility model.
Before setting forth hereinafter, explain following technical term earlier:
Body perpendicular to impeller shaft to side, sidewall be called body axial sides, sidewall, body be parallel to impeller shaft to side, sidewall be called body radial side, sidewall.The position of impeller and region of interest thereof are pointed to identical with body, impeller perpendicular to impeller shaft to side, sidewall be called impeller shaft to the side sidewall, impeller be parallel to impeller shaft to side, sidewall be called impeller radial side, sidewall.Organism sidewall comprises body axial side wall and radial sidewalls.The axial side wall that body is provided with air inlet is called front axle to sidewall, and another axial side wall of body is called axially sidewall of back; Dui Ying impeller both sides are called front axle to the axial side in side and back with it, and Dui Ying leaf dish is called frontal lobe dish and posterior lobe dish with it.What impeller outside air flue referred to is exactly impeller outer sidewind passage, and impeller outside air flue comprises impeller radial outside air flue and impeller shaft air flue laterally; Impeller radial outside air flue is meant the air-flow path that the impeller radial side is outer, and impeller shaft air flue laterally is meant the air-flow path that the impeller axial sides is outer.Impeller radial outside air flue comprise the impeller radial outside over against the impeller radial side and over against about the impeller radial side (up and down) be parallel to impeller shaft to air-flow path (not comprising fan outlet); Impeller shaft air flue does not laterally comprise the air inlet position.Blade radial is of a size of length of blade, and sharf is to being of a size of width of blade.Blade is the blade rear portion near the impeller outlet part.
The utility model adopts the working principle absolutely different with having blower fan now, it is the gaseous matter that directly utilizes the external boundary of suction function sucking machine of the high velocity air (high velocity airs before and after the impeller outlet) after Impeller Machining, the effect that back stream is inhaled the thing mouth by means of the suction function of high velocity air before and after the impeller outlet directly from the external world in casing intake-gas material in the air flue of the impeller outside.
Back stream is inhaled the thing mouth and is located on the body axial side wall, in other words on the arbitrary axial side wall of body or back stream suction thing mouth can be set on any position on the two axial sidewalls simultaneously.Back stream is inhaled the thing mouth and is followed the interior impeller of body outside air flue directly to be communicated with, and it can be communicated with impeller radial outside air flue in other words, also can follow impeller shaft air flue connection laterally, also can be simultaneously not only with impeller radial outside air flue but also with impeller shaft air flue connection laterally.That is to say it both can be before have axially utilized impeller outlet the suction function suction ambient atmos material of (in the impeller) high velocity air, again can be from radially utilizing the suction function suction ambient atmos material of (impeller outlet) high velocity air behind the impeller outlet.
Back stream is inhaled the thing mouth can be designed to various ways such as circle, arc, ring, semi-round ring shape, arc.Back stream inhale thing mouth wind-exposuring area can less than, equal, greater than the impeller axial sides area of a circle.
The suction guiding gutter of the technical program design also is an air-flow path, is called " groove " specially, is that another side is open all over because it is made up of three sidewalls.The inner chamber of suction guiding gutter is to inhale the thing mouth by impeller outside air flue and back stream to follow the extraneous connection of body.
Suction guiding gutter sidewall connects with organism sidewall, the suction guiding gutter protrudes from organism sidewall again, like this, basically the part that can regard the suction guiding gutter as the blower fan organism sidewall, but the effect with general blower fan organism sidewall is different, the high velocity air that it can be discharged impeller and inhale the thing mouth from the fan outlet that successfully leads of the gaseous matter in the extraneous inspiration body by back stream, it both can guarantee body internal lobe wheel radial outside air flue and axially the gas in the air flue of the outside can not inhale the thing mouth and not overflow body by being communicated with extraneous back stream, can guarantee that again back stream inhales the thing mouth and make full use of impeller radial outside and the axial suction function suction ambient atmos material of high velocity air in the air flue of the outside.The suction guiding gutter is inhaled the thing mouth with impeller outside air flue in the body with back stream and is communicated with, and is meant that aspirating guiding gutter can also directly follow back stream to inhale the thing mouth and be communicated with simultaneously indirectly directly indirectly with impeller radial outside air flue and axially outside air flue connection.The suction guiding gutter protrudes from organism sidewall, is meant that it both can be from axially having protruded from organism sidewall, again can be from radially protruding from organism sidewall; From axially protruding from organism sidewall, be meant that suction guiding gutter two radial sidewalls and axial side wall protrude from the body axial sides, its outer radial sidewall connects with the casing radial sidewalls; From radially protruding from organism sidewall, be meant that suction guiding gutter outer radial sidewall and two axial sidewalls protrude from the body radial sidewalls outside, it is to follow the body radial sidewalls to connect by its two axial sidewalls.
The suction guiding gutter can be a whole annular trough body, also can be the various ways such as combination cell body of semi-circular groove with curve bath or straight-line groove.The outlet machine exhaust outlet that follows the wind of suction guiding gutter directly or indirectly is communicated with.When the suction guiding gutter was a whole annular trough body or other combination shape cell bodies, its outlet machine exhaust outlet that just follows the wind directly was communicated with; When the suction guiding gutter was a semi-circular cell body or arc cell body, it exported the machine exhaust outlet indirect communication of just following the wind.
According to using needs, back stream is inhaled thing mouth bore and can be equated with circle in the suction guiding gutter, also can be that back stream is inhaled thing mouth bore less than circular diameter in the suction guiding gutter.Back stream is inhaled thing mouth bore when circular diameter equates in the suction guiding gutter, and then back stream is inhaled the thing mouth and just is communicated with suction guiding gutter inner chamber; Back stream inhales thing mouth bore less than in the suction guiding gutter during circular diameter, and then back stream is inhaled the thing mouth just air flue is with suction guiding gutter indirect communication laterally by impeller shaft, and it is always directly or indirectly open that the suction guiding gutter is inhaled the thing mouth to back stream.
In order to guarantee that body internal lobe wheel radial outside air flue can adapt to back stream and inhale the different pumping action requirement of thing mouth, impeller radial outside air flue can be designed as multiple different shape, as, all over is expansion shape along impeller shaft to can be designed as towards the body opposite side to a side from axis, or part is expansion shape, also can be annulus tubular or semicircular ring tubular basically, or multiple different cavity form such as circular arc tubular, whole impeller radial outside air flue can be a kind of geometrical shape, also can be the assemblying body of several geometrical shapies.
In order to guarantee that the gas in the air flue of the body internal lobe wheel radial outside definitely can not overflow body in back stream suction thing mouth, guarantee that back stream suction thing mouth can aspirate the ambient atmos material more fully, in body, can also be provided with back conductance flow, back conductance flow connects with organism sidewall, it can be connected with the body axial side wall in other words, also can be connected with the body radial sidewalls.Back conductance flow can be straight plate shape, can be circular arc, also can be airfoil.The water conservancy diversion direction of back conductance flow is to turn to by pointing to the suction guiding gutter in the impeller radial outside air flue along impeller, directly the gaseous matter in the air flue of the impeller outside is introduced the suction guiding gutter.
Leaf dish of the present utility model can use the existing structure form, as: on an impeller, be provided with width simultaneously and follow the equal disc posterior lobe dish of impeller radius, or only be provided with the disc posterior lobe dish that radius equates with impeller radius separately with ring frontal lobe dish and radius that the blade radial span equates.Leaf dish that also can the special use of otherwise designed the utility model, leaf blade disk of the present utility model can have following feature:
First kind of leaf dish structure characteristic is, be provided with ring frontal lobe dish at the impeller front axle to the side, frontal lobe dish and blade connect, the width of ring frontal lobe dish equates with the blade radial span, axial side is provided with disc posterior lobe dish behind the impeller, the posterior lobe dish connects with blade, and the radius of posterior lobe dish (from the axle center to leaf dish outer circular edge) is less than impeller axial sides circle radius (distance from impeller axial sides circumferential edges to the impeller axle center).The rear portion of the sideways blade of this impeller rear axle is exposed to posterior lobe dish periphery.Adopt this kind structural type, be again axially to be provided with back stream suction thing mouth on the sidewall behind the body, during work, back stream is inhaled in the thing mouth, the suction function of existing impeller outlet high velocity air, have the impeller blade rear portion also not discharge the suction function of the high velocity air of impeller again, the pumping action of whole back stream suction thing mouth can be very strong.
Second kind of leaf dish structure characteristic is, on the side, be provided with ring frontal lobe dish at the impeller front axle, the frontal lobe dish connects with impeller blade, and the width of ring frontal lobe dish is less than the impeller blade radial span, and the rear portion of the sideways impeller blade of this impeller front axle is exposed to frontal lobe dish periphery.This kind structure makes the sideways posterior lobe dish of impeller rear axle can form three kinds of structural types again, the first is not established the posterior lobe dish, it two is to be provided with the disc posterior lobe dish of radius less than impeller axial sides circle radius, and it three is to be provided with the disc posterior lobe dish that radius equals impeller axial sides circle radius.
This kind frontal lobe dish structural type and corresponding several structural types of posterior lobe dish thereof suit to flow after the arbitrary axial side wall of body is provided with and inhale the thing mouth or all establish back stream suction thing mouth at body two axial sidewalls.Especially, inhale the thing mouth if on sidewall, be provided with back stream at the body front axle, during work, existing back stream is inhaled the thing mouth by the high velocity air at the rear portion of impeller blade and the suction function suction ambient atmos material of impeller blade outlet port high velocity air, the suction function suction ambient atmos material of air inlet is arranged again, and suction intensity and suction flow that the suction intensity of complete machine can be more single than air inlet are much bigger.
The third leaf dish structure characteristic is, do not establish the frontal lobe dish on impeller, only establish disc posterior lobe dish, the posterior lobe dish connects with blade, the radius of posterior lobe dish is less than impeller axial sides circle radius, and the rear portion of the sideways blade of this impeller rear axle is exposed to posterior lobe dish periphery.This structural type, if axially be provided with back stream suction thing mouth on the sidewall behind the body, its pumping action is the same substantially with first kind of leaf dish structural type.
Different leaf dish structural type has determined the different performance characteristics of the different suction effect of blower fan, and the function of visible the utility model leaf dish is not exclusively the same with the function of existing blower fan leaf dish.
Suction effect that the utility model is different and performance characteristics thereof can also add corresponding part by inhaling in the thing mouth at back stream, or be realized it by the different structure of casing corresponding site.For example, effect and performance characteristics that above-mentioned second kind of leaf dish structural type produces, if do not establish the leaf dish in impeller two axial sides, only after establishing a circular intake grill and a ring simultaneously, sidewall flows suction thing mouth at the body front axle, the radial span of the distance of thing mouth internal circle edge less than impeller blade inhaled to back stream in the air inlet edge, allow the blade rear portion be exposed to ring after stream inhale in the thing mouth.Like this, blower fan can be obtained with second kind of suction effect and performance characteristics that leaf dish structural type is same.Again for example, the third leaf dish structural type, can not establish the leaf dish in impeller two axial sides equally, stream was inhaled the thing mouth after only axially sidewall was provided with circle behind the body of not establishing air inlet, again after stream is after this inhaled thing mouth and impeller between the axial side, add one and press close to the sideways circular barge board of impeller shaft, this circular barge board radius is less than impeller axial sides circle radius, allow the impeller blade rear portion be exposed to circular barge board periphery, during work, can obtain with the third leaf dish structural type same effect and performance characteristics.
The effect of all the other several leaf dish structures can and add mode such as barge board parts and realized by the casing corresponding site, has not just given unnecessary details one by one at this.
If more than the special structure form of several leaf dishes design ingenious, allow blade rear portion suitable position be exposed to the posterior lobe dish periphery or the frontal lobe dish excircle outside, the suction function of before only allowing the impeller edge export and outlet back high velocity air aspirates the ambient atmos material, high velocity air herein can produce very strong negative pressure-pumping ambient atmos material, because it is to spray to the impeller outside at a high speed, can effectively stops the contact of ambient atmos material or enter impeller again.This structural type during use, allows the air inlet inspiration clean gas material medium of working, and specially allows back stream inhale thing mouth suction outside contamination gaseous matter, and like this, not only suction effect is good, can also avoid stained corrosion impeller blade.
In a word, the utility model owing to adopted utilizes the working principle of the suction function suction ambient atmos material of high velocity air after the impeller outlet anteroposterior diameter Impeller Machining, structure is special again, compare with existing blower fan, its suction capactity is strong, and flow is big, power consumption is few, the efficient height, function is many, and can alleviate the corrosive wear degree of passage component in the body.
Description of drawings
Fig. 1-a kind of structural representation of the present utility model;
The overall structure schematic representation of Fig. 2-Fig. 1;
Fig. 3-second kind of structural representation of the present utility model;
The overall structure schematic representation of Fig. 4-Fig. 3;
Fig. 5-the third structural representation of the present utility model;
The overall structure schematic representation of Fig. 6-Fig. 5;
Fig. 7-the 4th kind of structural representation of the present utility model;
The overall structure schematic representation of Fig. 8-Fig. 7.
The explanation of accompanying drawing drawing:
Provide embodiment below in conjunction with accompanying drawing, the utility model is further elaborated.
Embodiment
Embodiment 1
With reference to figure 1, Fig. 2, the axial rear flow fan of a kind of slot type, it has scroll casing shape casing 1, press impeller 2 (blade is long and narrow) in centrifugal, air inlet 3, fan outlet 4, circular back stream is inhaled thing mouth 5, axially protrude the ring suction guiding gutter 6 of body, air inlet 3 (comprising impeller suction port 13) and impeller motor 9 are located at the same axial sides of body (front axle is to the side), body internal lobe wheel radial outside air flue 8 becomes expansion shape along impeller shaft to axial sidewall behind body to sidewall from the body front axle, the tapered tube of Dui Ying casing radial sidewalls is planar with it, suction guiding gutter 6 turns to axial expansion shape gradually from the snail tongue along impeller, circular back stream is inhaled thing mouth 5 diameters and is equated with circular diameter in the suction guiding gutter 6, back stream is inhaled the inner chamber of thing mouth 5 with suction guiding gutter 6, impeller radial outside air flue 8 directly is communicated with, the outer radial sidewall 15 of suction guiding gutter 6 is connected with the casing radial sidewalls, the inboard of the interior radially sidewall 14 of suction guiding gutter 6 is that back stream is inhaled thing mouth 5, the axial side wall 16 of suction guiding gutter 6 is axis to surveying wall, and the outlet of the suction guiding gutter 6 machine exhaust outlet 4 that follows the wind directly is communicated with.Do not establish the frontal lobe dish on the impeller 2 and only establish disc posterior lobe dish 11, posterior lobe dish 11 radiuses equate that with impeller axial sides circle radius posterior lobe dish and blade connect, and the sideways blade 12 of impeller rear axle is all covered in by posterior lobe dish 11.
During work, gas enters impeller by air inlet 3 and impeller suction port 13, be processed to high velocity air, arranged in impeller radial outside air flue 8 through impeller outlet then, high velocity air produces negative pressure and inhales thing mouth 5 suction ambient atmos materials by back stream, it is mobile that the ambient atmos material of warp stream suction later thing mouth 5 inspirations is imported into the inner chamber that aspirates guiding gutter 6 again, is discharged from body through fan outlet 4 again.Because impeller is provided with posterior lobe dish 11, posterior lobe dish 11 all shelters from the sideways blade 12 of impeller rear axle again, in the working procedure, through after the stream ambient atmos material of inhaling 5 inspirations of thing mouth can not enter impeller, and can not contact impeller blade 12, again because the effect of suction guiding gutter 6 is arranged, inhaling the ambient atmos material of thing mouth 5 inspiration impeller radial outside air flues 8 and gaseous matter that impeller outlet is discharged by back stream is subjected to stopping up of casing radial sidewalls and is imported into into that axial expansion flow in the suction guiding gutter 6 of axial expansion, like this, gas in the impeller radial outside air flue can not overflow body through the thing of stream suction later mouth, back stream is inhaled in the thing mouth and excessive air-flow do not occurred, and back stream is inhaled the thing mouth just can fully aspirate the ambient atmos material.
If present embodiment is in order to ventilation, and in the work, the pumping action of existing air inlet 3 has the back to flow the pumping action of inhaling thing mouth 5 again, compares with existing equal-wattage blower fan, and its suction amount is big, flow big, save the energy, efficient height.
Present embodiment can also be done uses such as suction dusty gas material, junk.In the work, allow the air inlet inspiration clean air medium of working, allow back stream inhale thing mouth suction dusty gas material, junk etc.Can greatly alleviate impeller like this by stained corrosion strength.
Present embodiment, add the fixed circular barge board that a radius equates with the posterior lobe dish if inhale thing mouth 5 inner close fitting posterior lobe Pan11Chu at back stream, like this, because blocking of barge board arranged, through after stream any gaseous matter of inhaling the inspiration of thing mouth will definitely can not contact the leaf blade disk, this kind structural type especially adapts to lampblack suction exhausting to be used, and not only can avoid stained impeller during lampblack suction exhausting, can also avoid grease soiling solution severe contamination body inner wall.
Embodiment 2
With reference to figure 3, Fig. 4, this example is similar with embodiment's 1 basic structure, different is that this routine impeller radial outside air flue 8 is annulus tubulars, conductance flow 7 after being provided with 4 in the annulus tubular impeller radial outside air flue 8, back conductance flow 7 connects with the casing radial sidewalls, back conductance flow 7 outwards turns in the sensing suction guiding gutter 6 along impeller in impeller radial outside air flue 8, the 3rd difference is that this example is provided with ring frontal lobe dish 10, frontal lobe dish 10 width equate with blade 12 radial span, the sideways blade 12 of impeller front axle is all sheltered from by frontal lobe dish 10, simultaneously also be provided with disc posterior lobe dish 11 in another axial sides of impeller, the radius of posterior lobe dish 11 is less than impeller axial sides circle radius, and the rear end of blade 12 is exposed to the periphery of posterior lobe dish 11.
During work, because the suction function of two place's high velocity airs in the impeller radial outside air flue 8 after preceding blade 12 rear end of impeller outlet and the outlet is arranged, inhale thing mouth 5 suction ambient atmos materials by back stream, so the suction of this routine ratio 1 can be stronger, the suction amount can be bigger.Gas in the impeller radial outside air flue is directly imported in the suction guiding gutters 6 by back conductance flow 7 and excessive air-flow can not occur.
This example is because blade 12 rear end, it is near the periphery that the position is exposed to posterior lobe dish 11 blade exit, it is short and small that blade 12 rear portions are exposed to the position of posterior lobe dish periphery in other words, high velocity air during work before and after the impeller outlet can aspirate the ambient atmos material effectively, can stop ambient atmos material contact impeller blade again.During work,, only allow back stream inhale thing mouth 5 suction outside contamination gaseous matters, can guarantee good suction effect, can guarantee that again impeller blade is not by stained corrosion if allow air inlet inspiration clean gas material make the work medium.
This example can make dusty gas definitely can not contact the leaf dish again if add radius with the barge board that posterior lobe dish radius equates pressing close to posterior lobe Pan Chu during work, can prevent the contaminated and corrosion of uppermost leaf dish.
This routine function and example 1 the same substantially.
Embodiment 3
With reference to figure 5, Fig. 6, this example is the same substantially with example 1, the suction guiding gutter 6 of this example that different is is from radially protruding from organism sidewall, and its outer radial sidewall 15 and two axial sidewalls 16 protrude from the body two axial sidewalls outsides, and it is to connect with the body radial sidewalls by its axial side wall 16.Second difference be these routine posterior lobe dish 11 radiuses less than impeller axial sides circle radius, the sideways blade of impeller rear axle rear portion is exposed to posterior lobe dish 11 periphery.The 3rd difference is that the back stream of this example is inhaled the radius of thing mouth 5 less than impeller axial sides circle radius.
During the work of this example, owing to the suction function that impeller outlet front and back two place's high velocity airs are arranged, the pumping action of inhaling thing mouth 5 is flowed in the back can be more much bigger than embodiment 1, again owing to stream suction thing after this example is young, so its suction is just strong especially.
Uses such as present embodiment is suitable does sweeping machine, sweeper, vacuum cleaner, draw water, conveying material.
Embodiment 4
Embodiment 4 is the same substantially with embodiment 3, only difference is that posterior lobe dish radius and impeller axial sides circle radius that this is routine equate, the posterior lobe dish shelters from the sideways blade of impeller rear axle fully, during the work of this example, allow the air inlet inspiration clean gas medium of working, only allow back stream inhale thing mouth 5 suction ambient atmos materials, can avoid dusty gas material contact impeller blade fully, if outside pressing close to the posterior lobe dish, add radius again, can avoid dusty gas contact leaf blade disk again with the barge board that posterior lobe dish radius equates.
Suitable suction liquid of this example and conveying material use.
This routine accompanying drawing slightly.
Embodiment 5
With reference to figure 7, Fig. 8, this example is similar with the basic structure of example 1, but this routine air inlet 3 and impeller suction port 13 are divided into axis to both sides with impeller motor 9, this example is not established the posterior lobe dish and is only established ring frontal lobe dish 10, the width of ring frontal lobe dish 10 is less than the radial span of blade 12, and blade 12 rear portions are exposed to frontal lobe dish 10 periphery.It is ring that this example back stream is inhaled thing mouth 5, stream suction thing mouth 5 exradius equate with impeller axial sides circle radius behind the ring, circle radius is less than impeller axial sides circle radius in it, blade 12 rear portions are exposed to the excircle outside of frontal lobe dish 10, being exposed to back stream inhales among the thing mouth 5, stream is inhaled thing mouth 5 with suction guiding gutter 6 indirect communication behind the ring, during the work of this example, both can make air inlet 3 and back stream inhale thing mouth 5 and aspirate simultaneously, and can make air inlet 3 inhale thing mouth 5 again and aspirate two kinds of different gaseous matters respectively with back stream with a kind of gaseous matter.
This example does ventilation or air blast is used, inhaling thing mouth 5 by air inlet 3 and back stream aspirates in the same direction with a kind of gaseous matter, suction is big, flow is big, if by pipeline, make the air inlet 3 suction clean airs medium of working, and only allow behind the ring stream inhale thing mouth 5 suction dusty gas materials, then present embodiment can be made suction dusty gas material again and uses.
Present embodiment frontal lobe dish 10 roles can also be finished by the structure of casing corresponding site, specific practice is exactly, do not establish the frontal lobe dish, and only be provided with ring casing axial side wall in air inlet 3 outsides, stream is inhaled thing mouth 5 behind this ring casing axial side wall arranged outside ring again, makes the impeller blade rear portion be exposed to back stream and inhales among the thing mouth 5.
Embodiment 6
This example is the same substantially with example 5, different is that this example also is provided with the disc posterior lobe dish 11 of radius less than impeller axial sides circle radius, second difference is that this example stream after also being provided with ring on the axial side behind the body is inhaled thing mouth 5, and the back stream of body front axle on the axial sidewall in sidewall and back is inhaled the suction function suction ambient atmos material that the thing mouth can all utilize impeller outlet front and back high velocity air simultaneously.During work, inhale the thing mouth by the back stream on air inlet 3 and the body two axial sidewalls and aspirate simultaneously with a kind of gaseous matter, suction suction amount is more much bigger than existing blower fan.This example especially suits to do ventilation and uses.
This routine accompanying drawing slightly.

Claims (7)

1, the axial rear flow fan of slot type, include casing (1), impeller (2), air inlet (3), fan outlet (4), impeller (2) is provided with the leaf dish, it is characterized in that, also be provided with back stream and inhale thing mouth (5) and suction guiding gutter (6), back stream inhale that thing mouth (5) is located on the body axial side wall and with body in impeller outside air flue directly be communicated with, suction guiding gutter (6) is located on the body edge sidewall, the sidewall of suction guiding gutter (6) connects with chassis sidewall, suction guiding gutter (6) protrudes from organism sidewall, and its inner chamber is inhaled thing mouth (5) with the outside of the impeller in body air flue with back stream and is communicated with.
2, the axial rear flow fan of slot type according to claim 1, it is characterized in that, be provided with back conductance flow (7) in the body, back conductance flow (7) connects with organism sidewall, and back conductance flow (7) turns to by impeller radial outside air flue (8) along impeller and points to suction guiding gutter (6).
3, the axial rear flow fan of slot type according to claim 1 and 2, it is characterized in that, front axle at impeller (2) is provided with ring frontal lobe dish (10) on the side, frontal lobe dish (10) is connected with blade (12) on the impeller, the width of frontal lobe dish (10) equates with the radial span of blade (12), on the back axial side of impeller (2), be provided with disc posterior lobe dish (11), posterior lobe dish (11) is connected with blade (12), the radius of posterior lobe dish (11) is less than the axial sides circle radius of impeller (2), and the rear portion of the sideways blade of this impeller rear axle (12) is exposed to the periphery of posterior lobe dish (11).
4, the axial rear flow fan of slot type according to claim 1 and 2, it is characterized in that, front axle at impeller (2) is provided with ring frontal lobe dish (10) on the side, frontal lobe dish (10) is connected with blade (12) on the impeller, the width of frontal lobe dish (10) is less than the radial span of blade (12), the rear portion of the sideways blade of this impeller front axle (12) is exposed to the periphery of frontal lobe dish (10), on the back axial side of impeller (2), be provided with disc posterior lobe dish (11), posterior lobe dish (11) is connected with blade (12), the radius of posterior lobe dish (11) is less than the axial sides circle radius of impeller (2), and the rear portion of the sideways blade of this impeller rear axle (12) is exposed to the periphery of posterior lobe dish (11).
5, the axial rear flow fan of slot type according to claim 1 and 2, it is characterized in that, front axle at impeller (2) is provided with ring frontal lobe dish (10) on the side, frontal lobe dish (10) is connected with blade (12) on the impeller, the width of frontal lobe dish (10) is less than the radial span of blade (12), the rear portion of the sideways blade of this impeller front axle (12) is exposed to the periphery of frontal lobe dish (10), on the back axial side of impeller (2), be provided with disc posterior lobe dish (11), posterior lobe dish (11) is connected with blade (12), and the radius of posterior lobe dish (11) equals the axial sides circle radius of impeller (2).
6, the axial rear flow fan of slot type according to claim 1 and 2, it is characterized in that, front axle at impeller (2) is provided with ring frontal lobe dish (10) on the side, frontal lobe dish (10) is connected with blade (12) on the impeller, the width of frontal lobe dish (10) is less than the radial span of blade (12), the rear portion of the sideways blade of this impeller front axle (12) is exposed to the periphery of frontal lobe dish (10), does not establish the posterior lobe dish on the back axial side of impeller (2).
7, the axial rear flow fan of slot type according to claim 1 and 2, it is characterized in that, front axle at impeller (2) is not established the frontal lobe dish on the side, and on the back axial side of impeller (2), be provided with disc posterior lobe dish (11), posterior lobe dish (11) is connected with blade (12) on the impeller, the radius of posterior lobe dish (11) is less than the axial sides circle radius of impeller (2), and the rear portion of the sideways blade of this impeller rear axle (12) is exposed to the periphery of posterior lobe dish (11).
CN 02268710 2002-07-31 2002-07-31 Channel-type axial back-flow fan Expired - Fee Related CN2567382Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02268710 CN2567382Y (en) 2002-07-31 2002-07-31 Channel-type axial back-flow fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 02268710 CN2567382Y (en) 2002-07-31 2002-07-31 Channel-type axial back-flow fan

Publications (1)

Publication Number Publication Date
CN2567382Y true CN2567382Y (en) 2003-08-20

Family

ID=33734094

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 02268710 Expired - Fee Related CN2567382Y (en) 2002-07-31 2002-07-31 Channel-type axial back-flow fan

Country Status (1)

Country Link
CN (1) CN2567382Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009140854A1 (en) * 2008-05-22 2009-11-26 山东大学 Multi-function centrifugal fan
WO2010130146A1 (en) * 2009-05-15 2010-11-18 Lin Junhao Multifunctional synchronous backflow ventilating compressor
EP2290293A1 (en) * 2008-06-25 2011-03-02 Shan Dong University A cooking fume exhauster
CN102022352A (en) * 2010-11-30 2011-04-20 林钧浩 Centrifugal type isolating and shunting sucking-discharging material ventilator
CN102094831A (en) * 2011-02-23 2011-06-15 林钧浩 Machine for sucking and discharging high-temperature and high-corrosion materials
CN104832439A (en) * 2015-04-17 2015-08-12 林钧浩 Annular-flow material-suction/discharge fan

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009140854A1 (en) * 2008-05-22 2009-11-26 山东大学 Multi-function centrifugal fan
EP2290293A1 (en) * 2008-06-25 2011-03-02 Shan Dong University A cooking fume exhauster
EP2290293A4 (en) * 2008-06-25 2012-09-26 Shan Dong University A cooking fume exhauster
WO2010130146A1 (en) * 2009-05-15 2010-11-18 Lin Junhao Multifunctional synchronous backflow ventilating compressor
CN102022352A (en) * 2010-11-30 2011-04-20 林钧浩 Centrifugal type isolating and shunting sucking-discharging material ventilator
CN102022352B (en) * 2010-11-30 2013-01-30 林钧浩 Centrifugal type isolating and shunting sucking-discharging material ventilator
CN102094831A (en) * 2011-02-23 2011-06-15 林钧浩 Machine for sucking and discharging high-temperature and high-corrosion materials
CN102094831B (en) * 2011-02-23 2012-12-26 林钧浩 Machine for sucking and discharging high-temperature and high-corrosion materials
CN104832439A (en) * 2015-04-17 2015-08-12 林钧浩 Annular-flow material-suction/discharge fan

Similar Documents

Publication Publication Date Title
CN2742201Y (en) Multiwall blade booster rear flow fan
CN100516546C (en) Electric blower and electric cleaner using the same
CN100460691C (en) Pressurized centrifugal rear axial-flown fan impeller
CN2567382Y (en) Channel-type axial back-flow fan
CN2839671Y (en) Booster axial-flow fan
CN2670642Y (en) Multifunctional strong sucking back-flow fans
CN205533435U (en) One shot forming's axial fan urceolus collection wind ware
KR101275755B1 (en) Multifunctional Back-Flowing Type Strong Suction Blower
CN101046212A (en) Pressurized centrifugan blower impeller
CN2564783Y (en) Axial rear flow fan
CN2600629Y (en) Multifunction centrifugal fan with back suction mouth
CN101566164A (en) Multifunctional synchronous after flow ventilating compressor
CN1862029A (en) Bucket screw centrifugal vane of fan and application method of said vane in fluid delivering thereof
CN1075605C (en) Electric dust suction means
CN209302990U (en) Gas particles object separator and air cleaning system
CN2541643Y (en) Externally flowing sucktion fan
CN207898428U (en) A kind of dust suction air hose
CN102588349A (en) Axial flow fan for exhausting air and dust in pipeline
CN2514148Y (en) Outflow fan
CN1727697A (en) Centrifugal fan of vacuum cleaner
CN1397769A (en) Cyclone-type sucking-exhausting mechanism
CN2510653Y (en) Multifunctional back-flow fan
CN2487900Y (en) Rear flow fan
CN2510652Y (en) Deflector-type multifunctional back-flow fan
CN2909054Y (en) Energy-saving kitchen ventilator

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee