CN102734222B - Diffuser and be provided with the centrifugal cutter of this Diffuser - Google Patents
Diffuser and be provided with the centrifugal cutter of this Diffuser Download PDFInfo
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- CN102734222B CN102734222B CN201110086253.1A CN201110086253A CN102734222B CN 102734222 B CN102734222 B CN 102734222B CN 201110086253 A CN201110086253 A CN 201110086253A CN 102734222 B CN102734222 B CN 102734222B
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Abstract
The invention provides a kind of Diffuser and centrifugal cutter.Diffuser comprises dividing plate, is evenly arranged at some leading blades of periphery before dividing plate and is evenly arranged at some rear guide vane sheets of periphery after dividing plate, wherein: leading blade comprises the outer blade section that inner blade portion that shape line is circular shape and shape line are involute shape, wherein the center of circle of the basic circle of the outer blade section of involute shape is the center of circle of dividing plate, and radius is the length of the center of circle to the intersection of inner blade portion and outer blade section of dividing plate.Eddy current loss and the impact loss of Diffuser air-flow of the present invention are little.Centrifugal cutter of the present invention is provided with Diffuser of the present invention, so the working efficiency of centrifugal cutter of the present invention is high.
Description
Technical field
The present invention relates to a kind of Diffuser, and the centrifugal cutter of this Diffuser is installed.
Background technique
According to the flow direction into and out of air-flow, fan can be divided into axial fan and centrifugal cutter two kinds.Wherein, in centrifugal cutter, air flows into centrifugal cutter from axial direction and is derived by circumferencial direction, and have the advantages that blast is large, therefore centrifugal cutter is widely used in top suction type air cleaner, vacuum cleaner, etc.
Traditional centrifugal cutter, comprises motor, impeller, Diffuser and case etc.Impeller comprises upper cover plate, lower cover plate and some blades.As shown in Figure 1, Figure 2 and Figure 3, Diffuser comprise dividing plate 51, be evenly arranged on dividing plate 51 above excircle some leading blades 52 and be evenly arranged on some rear guide vane sheets 53 of dividing plate 51 excircle below, leading blade 52 is made up of inner blade portion 524 and outer blade section 525, has internal surface, outer surface, the inner 521, outer end 522, top 523 and bottom.The bottom of leading blade 52 is fixed on before dividing plate 51.The leading blade 52 of adjacent two panels and dividing plate 51 surround supercharging runner.Case central authorities are provided with suction port, and the upper cover plate of impeller is provided with center through hole, and upper cover plate, lower cover plate and adjacent two panels blade surround air flow channel, and the outer end of air flow channel is relief opening.When driven by motor impeller High Rotation Speed, air enters in the air flow channel of impeller by the suction port of case central authorities, the center through hole of impeller upper cover plate, then the relief opening through impeller air runner throws away, enter under the effect of rear guide vane sheet 53 in electric machine casing after the air-flow be thrown out of carries out supercharging in the supercharging runner of Diffuser, after cooling motor, discharge centrifugal cutter by the air port on electric machine casing.
From the above-mentioned working principle of centrifugal cutter, the effect of Diffuser in centrifugal cutter is, carries out supercharging to by air flow channel effluent air.And in the Diffuser of conventional construction, the structure of leading blade comprises the inner blade portion of two sections of shape lines all in circular shape and outer blade section, the supercharging runner formed by inside and outside blade-section and the dividing plate of this circular shape is level and smooth not, and the easy barrier air flowing of supercharging runner tail end, so the eddy current loss of air-flow and impact loss are greatly, then reduce the working efficiency of centrifugal cutter.
Summary of the invention
The present invention will solve existing Diffuser eddy current loss and impact loss is large, and the ineffective technical problem of existing centrifugal cutter.
For solving the problems of the technologies described above, the present invention adopts following technological scheme:
Diffuser of the present invention, comprise dividing plate, be evenly arranged at the some leading blades in the outer toroid region of the front surface of described dividing plate and be evenly arranged at the some rear guide vane sheets in outer toroid region of rear surface of described dividing plate, wherein: described leading blade comprises the outer blade section that inner blade portion that shape line is circular shape and shape line are involute shape, the center of circle of the basic circle of the outer blade section of wherein said involute shape is the center of circle of described dividing plate, and radius is the length of the center of circle to the intersection of described inner blade portion and outer blade section of described dividing plate.
Before described dividing plate, periphery is provided with rake, and this rake has plane of inclination, and the outer end of the thickness of described rake the inner guide vane forward of guide vane is in the past radially thinning gradually; The bottom of described leading blade is arranged on described plane of inclination, and the top of described some leading blades at grade.
Described plane of inclination is 5-15 ° relative to the angle of inclination of described dividing plate.
Preferably, described plane of inclination is 10 ° relative to the angle of inclination of described dividing plate.
Centrifugal cutter of the present invention, comprise the motor be arranged in electric machine casing, central authorities have the case of suction port and are arranged on Diffuser in described case and are arranged on the impeller in described Diffuser, wherein said impeller comprises upper cover plate, lower cover plate and some blades that are spaced and that be evenly arranged between described upper cover plate and lower cover plate, the upper cover plate of described impeller has center through hole, by described upper cover plate, the space that lower cover plate and adjacent two panels blade surround is air flow channel, the outer end of air flow channel is relief opening, wherein: described Diffuser is Diffuser of the present invention.
Also comprise in described centrifugal cutter and air-flow can be prevented to be back to the first baffle ring of described suction port by described relief opening.
Described first baffle ring is arranged on the close outer circumferential edges position of the upper cover plate of described impeller, and the gap between the top end of described first baffle ring and described case lower surface is 0.5-1.5mm.
Described first baffle ring is arranged on described case, and the gap between the described bottom end of the first baffle ring and the upper surface of the upper cover plate of described impeller is 0.5-1.5mm.
Described centrifugal cutter also comprises the second baffle ring, and this second baffle ring is arranged on described case, and is staggeredly arranged with described first baffle ring.
As shown from the above technical solution, advantage and the good effect of Diffuser of the present invention are: leading blade comprises the outer blade section that inner blade portion that shape line is circular shape and shape line are involute shape, the tail end of involute is openr, so the supercharging runner formed by leading blade and the dividing plate of this shape is very level and smooth, and the tail end of supercharging runner is openr, can not flow by barrier air, therefore, in Diffuser of the present invention, eddy current loss and the impact loss of air-flow all significantly reduce.
Advantage and the good effect of centrifugal cutter of the present invention are: in centrifugal cutter of the present invention, and owing to being provided with Diffuser of the present invention, eddy current loss and the impact loss of air-flow are little, so the working efficiency of centrifugal cutter of the present invention is high.
By referring to accompanying drawing description of a preferred embodiment, above-mentioned and other objects, features and advantages of the present invention will be more obvious.
Accompanying drawing explanation
Fig. 1 represents the plan structure schematic diagram of existing Diffuser;
Fig. 2 represents the E-E sectional view of Fig. 1;
Fig. 3 represents the perspective view of the Diffuser shown in Fig. 1;
Fig. 4 is the plan structure schematic diagram of Diffuser of the present invention;
Fig. 5 represents the F-F sectional view of Fig. 4;
Fig. 6 represents the plan view of the first embodiment of centrifugal cutter of the present invention;
Fig. 7 represents the A-A sectional view of Fig. 6;
Fig. 8 represents the perspective view of the impeller in the first embodiment of centrifugal cutter of the present invention;
Fig. 9 represents the plan view of the impeller shown in Fig. 8;
Figure 10 represents the B-B sectional view of Fig. 9;
Figure 11 represents the sectional structure schematic diagram of the second embodiment of centrifugal cutter of the present invention;
Figure 12 represents the perspective view of the case in the second embodiment of centrifugal cutter of the present invention;
Figure 13 represents the sectional structure schematic diagram of the third embodiment of centrifugal cutter of the present invention.
Embodiment
Specific embodiments of the invention are described in detail below in conjunction with accompanying drawing.It should be noted that the embodiments described herein is only for illustrating, is not limited to the present invention.
Diffuser embodiment 1
With reference to shown in Fig. 4.Fig. 4 is the plan structure schematic diagram of Diffuser of the present invention.The Diffuser of the present embodiment 1, comprises disc dividing plate 51, some leading blades 52 and some rear guide vane sheets 53.
Leading blade 52 comprises the outer blade section 527 that inner blade portion 526 that shape line is circular shape and shape line are involute shape, wherein the center of circle of the basic circle of the outer blade section 527 of involute shape is the center of circle of dividing plate 51, and radius is the length of the center of circle to the intersection of inner blade portion 526 and outer blade section 527 of dividing plate 51.Leading blade 52 has internal surface, outer surface, the inner 521, outer end 522, top 523 and bottom.The top 523 of some leading blades 52 at grade.Some leading blades 52 are spaced from each other certain intervals, in the outer toroid region of the front surface of dividing plate 51 in being counterclockwise evenly arranged.
The shape of rear guide vane sheet 53 can be identical with leading blade 52, can certainly be different.Some rear guide vane sheets 53 are spaced from each other certain intervals, are that clockwise direction is evenly fixed on dividing plate 51 in the outer toroid region of the rear surface of dividing plate 51.
In the Diffuser of the present embodiment 1, dividing plate 51 also can be square other shapes such as grade.In the present embodiment 1, ensureing to enter that the flow of supercharging runner is constant, in the constant situation of the moment of momentum, the inner blade portion 526 of leading blade 52 is designed to circular arc, outer blade section 527 is designed to involute shape, can guarantee to have on to a certain degree diffusion basis and hand over ground water conservancy diversion, and part dynamic pressure can be transformed into static pressure, contribute to increasing work efficiency.
Diffuser embodiment 2
With reference to shown in Fig. 5.Fig. 5 represents the F-F sectional view of Fig. 4.The Diffuser of the present embodiment 2, comprises dividing plate 51, some leading blades 52 and some rear guide vane sheets 53.
Dividing plate 51 is in disc, and dividing plate 51 above excircle is provided with rake, and rake can be the structure be formed in one with dividing plate 51, also can be to be fixed on dividing plate 51 by other modes such as bondings.The outer end of the thickness of rake the inner guide vane 52 forward of guide vane 52 is in the past radially thinning gradually, thus makes the front surface of this rake define plane of inclination 511.This plane of inclination 511 is 10 ° relative to the angle of inclination of dividing plate 51, and certain angle of inclination is not limited to 10 °, is all feasible usually within the scope of 5-15 °.
Leading blade 52 comprises the outer blade section 527 that inner blade portion 526 that shape line is circular shape and shape line are involute shape, wherein the center of circle of the basic circle of the outer blade section 527 of involute shape is the center of circle of dividing plate 51, and radius is the length of the center of circle to the intersection of inner blade portion 526 and outer blade section 527 of dividing plate 51.Leading blade 52 has internal surface, outer surface, the inner 521, outer end 522, top 523 and bottom.The bottom of leading blade 52 is fixed on plane of inclination 511, and the inner of leading blade 52 originates in the inner of plane of inclination 511, and outer end ends at the outer end of plane of inclination 511.The top 523 of some leading blades 52 at grade.Some leading blades 52 are spaced from each other certain intervals, in the outer toroid region of the front surface of dividing plate 51 in being counterclockwise evenly arranged.
The shape of rear guide vane sheet 53 can be identical with leading blade 52, can certainly be different.Some rear guide vane sheets 53 are spaced from each other certain intervals, are that clockwise direction is evenly fixed on dividing plate 51 in the outer toroid region of the rear surface of dividing plate 51.
The Diffuser of the present embodiment 2, because before dividing plate 51, excircle is provided with the rake with plane of inclination, some leading blades are arranged on the plane of inclination of rake.Therefore, supercharging runner is just surrounded by the leading blade of adjacent two panels and plane of inclination, after gas enters supercharging runner, height due to supercharging runner becomes ascending linear change, such cross section of fluid channel amasss variance ratio to be increased, more effectively part dynamic pressure is transformed into static pressure, reduces linear loss, this contributes to the efficiency improving motor.When other structure of Diffuser is determined, compared to the supercharging runner not having plane of inclination, this supercharging runner with plane of inclination increases to a certain extent to some extent in the difference of the gas flow area of air flow outlet with the gas flow area at air flow inlet place, and the factors such as the amount of increase and the angle of inclination of plane of inclination are relevant.The diameter of dividing plate 51, the quantity of leading blade 52 and the angle of inclination etc. of plane of inclination can be taken into full account during specific design.In the present embodiment, the diameter of dividing plate 51 is 130mm, and the quantity of leading blade 52 is 13, and the angle of inclination of plane of inclination is 10 °.The Diffuser of the present embodiment, effectively can avoid the linear loss problem that diffusion deficiency causes.
Centrifugal cutter embodiment 1
With reference to Fig. 3 to Figure 10.Wherein, Fig. 3 is the perspective view of Diffuser in centrifugal cutter of the present invention; Fig. 4 is the plan structure schematic diagram of Diffuser; Fig. 5 represents the F-F sectional view of Fig. 4.Fig. 6, Fig. 7 represent the first example structure of centrifugal cutter of the present invention; Fig. 8, Fig. 9 and Figure 10 represent the structure of impeller in the first embodiment of centrifugal cutter of the present invention.
The first embodiment of centrifugal cutter of the present invention, comprises the motor 2 be arranged in electric machine casing 1, impeller 3, case 4 and Diffuser.Wherein
Impeller 3 comprises upper cover plate 31, lower cover plate 32 and some blades 33.The upper cover plate 31 of impeller 3 has center through hole.The some blades 33 of impeller 3 are spaced and be evenly arranged between upper cover plate 31 and lower cover plate 32, and the inner of blade 33 originates near the center through hole of upper cover plate 31, outer end ends at upper cover plate 31 excircle, the end face of blade 33 is fixed on upper cover plate 31, and bottom surface is fixed on lower cover plate 32.The space surrounded by upper cover plate 31, lower cover plate 32 and adjacent two panels blade 33 is air flow channel, and the outer end of air flow channel is relief opening 34.In the present embodiment, on the upper cover plate 31 of impeller 3, be also provided with the first baffle ring 6, this first baffle ring 6 can by bonding, riveted joint or be set on upper cover plate 31 with the integrated mode of upper cover plate 31.Preferably, this first baffle ring 6 is arranged on the close outer circumferential edges position above upper cover plate 31, can stop reflux airflow early like this when impeller starts to rotate.Gap between the top end of the first baffle ring 6 and case 4 lower surface is 1mm, certainly this gap is not limited to 1mm, for the difference of different applications, different product and model, specification, different scopes can be got in this gap, such as when for general vacuum cleaner, this gap can be 0.5-1.5mm.As a rule, this gap is less, intercepts the effect of airflow reflux better, but gap is too small may cause impeller movement interference, and therefore general when guaranteeing not hinder wheel rotation, smaller value is got in this gap as far as possible.The thickness of the first baffle ring 6 can be 0.5mm, can be highly 4mm, the one-tenth-value thickness 1/10 of certain first baffle ring 6, height value, not as limit, specifically can be determined according to factors such as the model of centrifugal cutter, specifications, thickness as the first baffle ring 6 can be 0.3-1mm, can be highly 3-5mm.The material of the first baffle ring 6 can select stainless steel, cast iron or highstrenghtpiston etc.
Case 4 has upper cover part 41 and the cylindrical part 42 with this upper cover part 41 one.Cylindrical part 42 is along the circumferential direction evenly provided with several rectangular opening 44, and the central authorities of the upper cover part 41 of case 4 have suction port 43.The upper cover plate 31 of impeller 3 is provided with the air intake baffle ring 45 integrally formed with upper cover plate 31 along the circumference of suction port 43, to guarantee that the air entered by the suction port 43 of case 4 can enter in impeller 3 with the center through hole of the upper cover plate 31 of impeller 3, and the space between the upper cover plate 31 of impeller 3 and the upper cover plate 31 of case 4 can not be entered into.The upper cover part 41 of case 4 has outwardly convex convex shoulder 46, and this convex shoulder 46 is conducive to reducing the gap between case 4 and impeller 3, thus is conducive to reducing the capacity of reflux by relief opening 34 to suction port 43.
Diffuser, comprises dividing plate 51, some leading blades 52 and some rear guide vane sheets 53.Dividing plate 51 is in disc, and dividing plate 51 above excircle is provided with rake, and rake can be the structure be formed in one with dividing plate 51, also can be to be fixed on dividing plate 51 by other modes such as bondings.The outer end of the thickness of rake the inner guide vane 52 forward of guide vane 52 is in the past radially thinning gradually, thus makes the front surface of this rake define plane of inclination 511.This plane of inclination 511 is 10 ° relative to the angle of inclination of dividing plate 51, and certain angle of inclination is not limited to 10 °, is all feasible usually within the scope of 5-15 °.Leading blade 52 comprises the outer blade section 527 that inner blade portion 526 that shape line is circular shape and shape line are involute shape, wherein the center of circle of the basic circle of the outer blade section 527 of involute shape is the center of circle of dividing plate 51, and radius is the length of the center of circle to the intersection of inner blade portion 526 and outer blade section 527 of dividing plate 51.Leading blade 52 has internal surface, outer surface, the inner 521, outer end 522, top 523 and bottom.The bottom of leading blade 52 is fixed on plane of inclination 511, and the inner of leading blade 52 originates in the inner of plane of inclination 511, and outer end ends at the outer end of plane of inclination 511.The top 523 of some leading blades 52 at grade.Some leading blades 52 are spaced from each other certain intervals, in the outer toroid region of the front surface of dividing plate 51 in being counterclockwise evenly arranged.Due in Diffuser before dividing plate 51 excircle be provided with the rake with plane of inclination, some leading blades are arranged on the plane of inclination of rake.Therefore, supercharging runner is just surrounded by the leading blade of adjacent two panels and plane of inclination.When other structure of Diffuser is determined, compared to the supercharging runner not having plane of inclination, this supercharging runner with plane of inclination increases to a certain extent to some extent in the difference of the gas flow area of air flow outlet with the gas flow area at air flow inlet place.The Diffuser of the present embodiment, devises the diffusion degree of supercharging runner rightly, has both avoided the linear loss that diffusion deficiency causes, and turn avoid the problem that the excessive diffusion loss caused of diffusion strengthens.Some rear guide vane sheets 53 are spaced from each other certain intervals, are that clockwise direction is evenly fixed on dividing plate 51 in the outer toroid region of the rear surface of dividing plate 51.The dividing plate 51 of Diffuser is fixedly mounted on electric machine casing 1 by Diffuser support 54.Impeller 3 is fixedly mounted on the output shaft 21 of motor 2 by nut 35.
When motor 2 starts, during output shaft 21 impeller 3 High Rotation Speed, gas in air flow channel makes relief opening 34 place form positive pressure (namely higher than atmospheric pressure) zone of high pressure, so the gas in air flow channel throws away through relief opening 34 under the influence of centrifugal force; Meanwhile, negative pressure (namely lower than atmospheric pressure) low pressure area is formed at the suction port place of centrifugal cutter, so ambient atmos is inhaled in impeller 3 by suction port 43 under atmospheric pressure effect, to supplement the gas of discharging from relief opening 34, and the gas entered in air flow channel discharges air flow channel again under the centrifugal force of impeller 3 generation, so move in circles work.The rectangular opening 44 of the part of gas of discharging through air flow channel after leading blade 52 supercharging of Diffuser on case is discharged to the external world, another part gas is after the leading blade 52 of Diffuser increases, the space below dividing plate 51 is entered by the outer rim of the dividing plate 51 of Diffuser, and the through hole under the guide functions of rear guide vane sheet 53 on Diffuser support 54 enters in electric machine casing 1, after motor 2 is cooled, be discharged to the external world by the air port on electric machine casing 1.In the above-mentioned working procedure of centrifugal cutter, although suction port 43 place of centrifugal cutter is negative pressure low pressure area, the relief opening 34 of centrifugal cutter is zone of high pressure, air-flow have from zone of high pressure relief opening 34 inflow low pressure area suction port 43 with and form the trend refluxed, but owing to being provided with the first baffle ring 6 on the upper cover plate 31 of impeller 3, thus block the path of airflow reflux, increase the resistance to reflux airflow, therefore, the centrifugal cutter of the present embodiment can reduce the backflow of air-flow effectively, internal leakage loss can be reduced, increase draft capacity, thus improve the working efficiency of centrifugal cutter.
Centrifugal cutter embodiment 2
With reference to Figure 11, Figure 12.Figure 11 represents the sectional structure schematic diagram of the second embodiment of centrifugal cutter of the present invention; Figure 12 represents the perspective view of the case in the second embodiment of centrifugal cutter of the present invention.
Case 4 has upper cover part 41 and the cylindrical part 42 with this upper cover part 41 one.Cylindrical part 42 is along the circumferential direction evenly provided with several rectangular opening 44, and the central authorities of the upper cover part 41 of case 4 have suction port 43.The air intake baffle ring 45 integrally formed with upper cover plate 31 is provided with at the circumference along suction port 43 on the upper cover plate 31 of impeller 3, to guarantee that the air entered by the suction port 43 of case 4 can enter in impeller 3 through the center through hole of the upper cover plate 31 of impeller 3, and the space between the upper cover plate 31 of impeller 3 and the upper cover plate 41 of case 4 can not be entered into.The upper cover part 41 of case 4 has outwardly convex convex shoulder 46, and this convex shoulder 46 is corresponding with upper cover plate 31 excircle of impeller 3.This convex shoulder 46 is conducive to reducing the gap between case 4 and impeller 3, thus is conducive to reducing the capacity of reflux by relief opening 34 to suction port 43.Contiguous position, convex shoulder 46 is provided with the first baffle ring 6, and this first baffle ring 6 by bonding, welding, riveted joint or can be set on upper cover plate 31 with the integrated mode of upper cover plate 31.Preferably, gap between the upper surface of the bottom end of the first baffle ring 6 and the upper cover plate 31 of impeller 3 is 1mm, certainly this gap is not limited to 1mm, for the difference of different applications, different product and model, specification, different scopes can be got in this gap, such as when for general vacuum cleaner, this gap can be 0.5-1.5mm.As a rule, this gap is less, intercepts the effect of airflow reflux better, but gap is too small may cause impeller movement interference, and therefore general when guaranteeing not hinder wheel rotation, smaller value is got in this gap as far as possible.The thickness of the first baffle ring 6 can be 0.5mm, can be highly 4mm, the one-tenth-value thickness 1/10 of certain first baffle ring 6, height value, not as limit, specifically can be determined according to factors such as the model of centrifugal cutter, specifications, thickness as the first baffle ring 6 can be 0.3-1mm, can be highly 3-5mm.The material of the first baffle ring 6 can select stainless steel, cast iron or highstrenghtpiston etc.
Other structures of the second embodiment of this centrifugal cutter, as substantially identical with the first embodiment in electric machine casing, motor, impeller and Diffuser etc., repeat no more here.
Centrifugal cutter embodiment 3
See Figure 13.Figure 13 represents the sectional structure schematic diagram of the third embodiment of centrifugal cutter of the present invention.
The third embodiment of centrifugal cutter of the present invention is comprehensive to centrifugal cutter first embodiment and the second embodiment, namely the first baffle ring 6 is set on the upper cover plate 31 of impeller 3, second baffle ring 7 is set on case 4 simultaneously, and the first baffle ring 6 and the second baffle ring 7 are staggeredly arranged, play the effect of double prevention backflow.Other structures of the third embodiment of this centrifugal cutter, as substantially identical with the first embodiment in electric machine casing, motor, impeller and Diffuser etc., repeat no more here.
Although exemplary embodiment describe the present invention with reference to several, should be appreciated that term used illustrates and exemplary and nonrestrictive term.Spirit or the essence of invention is not departed from because the present invention can specifically implement in a variety of forms, so be to be understood that, above-described embodiment is not limited to any aforesaid details, and explain widely in the spirit and scope that should limit in claim of enclosing, therefore fall into whole change in claim or its equivalent scope and remodeling and all should be claim of enclosing and contained.
Claims (9)
1. a Diffuser, comprise dividing plate (51), some, the outer toroid region rear guide vane sheet (53) of the some leading blades (52) being evenly arranged at the outer toroid region of the front surface of described dividing plate (51) and the rear surface being evenly arranged at described dividing plate (51), it is characterized in that: described leading blade (52) comprises the outer blade section (527) that inner blade portion (526) that shape line is circular shape and shape line are involute shape, the center of circle of the basic circle of the outer blade section (527) of wherein said involute shape is the center of circle of described dividing plate (51), radius is the length of the center of circle to the intersection of described inner blade portion (526) and outer blade section (527) of described dividing plate (51).
2. Diffuser as claimed in claim 1, it is characterized in that: described dividing plate (51) front surface periphery is provided with rake, this rake has plane of inclination (511), and the outer end of the thickness of described rake the inner guide vane (52) forward of guide vane (52) is in the past radially thinning gradually; The bottom of described leading blade (52) is arranged on described plane of inclination (511), and the top of described some leading blades (52) at grade.
3. Diffuser as claimed in claim 2, is characterized in that: described plane of inclination (511) are 5 °-15 ° relative to the angle of inclination of the front surface of described dividing plate (51).
4. Diffuser as claimed in claim 3, is characterized in that: described plane of inclination (511) are 10 ° relative to the angle of inclination of the front surface of described dividing plate (51).
5. one kind has the centrifugal cutter of the Diffuser as described in any one of claim 1-4, comprise the motor (2) be arranged in electric machine casing (1), central authorities have the case (4) of suction port (43) and are arranged on Diffuser in described case (4) and are arranged on the impeller (3) in described Diffuser, wherein said impeller (3) comprises upper cover plate (31), lower cover plate (32) and some blades (33) that are spaced and that be evenly arranged between described upper cover plate (31) and lower cover plate (32), the upper cover plate (31) of described impeller (3) has center through hole, by described upper cover plate (31), the space that lower cover plate (32) and adjacent two panels blade (33) surround is air flow channel, the outer end of air flow channel is relief opening (34), it is characterized in that: described Diffuser is the Diffuser as described in any one of claim 1-4.
6. centrifugal cutter as claimed in claim 5, is characterized in that: also comprise in described centrifugal cutter and air-flow can be prevented to be back to the first baffle ring (6) of described suction port (43) by described relief opening (34).
7. centrifugal cutter as claimed in claim 6, it is characterized in that: described first baffle ring (6) is arranged on the close outer circumferential edges position of the upper cover plate (31) of described impeller (3), the gap between the top end of described first baffle ring (6) and described case (4) lower surface is 0.5-1.5mm.
8. centrifugal cutter as claimed in claim 6, it is characterized in that: described first baffle ring (6) is arranged on described case (4), the gap between the described bottom end of the first baffle ring (6) and the upper surface of the upper cover plate (31) of described impeller (3) is 0.5-1.5mm.
9. centrifugal cutter as claimed in claim 6, it is characterized in that: described first baffle ring (6) is arranged on the upper cover plate (31) of described impeller (3), described centrifugal cutter also comprises the second baffle ring (7), this the second baffle ring (7) is arranged on described case (4), and is staggeredly arranged with described first baffle ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110086253.1A CN102734222B (en) | 2011-04-07 | 2011-04-07 | Diffuser and be provided with the centrifugal cutter of this Diffuser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110086253.1A CN102734222B (en) | 2011-04-07 | 2011-04-07 | Diffuser and be provided with the centrifugal cutter of this Diffuser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102734222A CN102734222A (en) | 2012-10-17 |
| CN102734222B true CN102734222B (en) | 2016-03-30 |
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| CN201110086253.1A Expired - Fee Related CN102734222B (en) | 2011-04-07 | 2011-04-07 | Diffuser and be provided with the centrifugal cutter of this Diffuser |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020253093A1 (en) * | 2019-06-20 | 2020-12-24 | 苏州工业园区星德胜电机有限公司 | High-efficiency dry and wet dual-use fan |
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| US8596968B2 (en) * | 2008-12-31 | 2013-12-03 | Rolls-Royce North American Technologies, Inc. | Diffuser for a compressor |
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| KR20030070765A (en) * | 2002-02-26 | 2003-09-02 | 엘지전자 주식회사 | The centrifugal blower for a cleaner |
| CN101105188A (en) * | 2006-07-12 | 2008-01-16 | 德昌电机股份有限公司 | Suction cleaner blower |
| JP2009095534A (en) * | 2007-10-18 | 2009-05-07 | Panasonic Corp | Electric blower |
| JP2010011997A (en) * | 2008-07-03 | 2010-01-21 | Panasonic Corp | Electric blower and electric vacuum cleaner using this |
| JP2010190136A (en) * | 2009-02-19 | 2010-09-02 | Panasonic Corp | Electric blower and electric vacuum cleaner using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102734222A (en) | 2012-10-17 |
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