CN1785106A - Vacuum cleaner impeller and motor assembly - Google Patents
Vacuum cleaner impeller and motor assembly Download PDFInfo
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- CN1785106A CN1785106A CNA2005101075487A CN200510107548A CN1785106A CN 1785106 A CN1785106 A CN 1785106A CN A2005101075487 A CNA2005101075487 A CN A2005101075487A CN 200510107548 A CN200510107548 A CN 200510107548A CN 1785106 A CN1785106 A CN 1785106A
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- Prior art keywords
- guiding portion
- pusher
- air guiding
- lower plate
- upper plate
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J19/00—Household machines for straining foodstuffs; Household implements for mashing or straining foodstuffs
- A47J19/06—Juice presses for vegetables
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J19/00—Household machines for straining foodstuffs; Household implements for mashing or straining foodstuffs
- A47J19/02—Citrus fruit squeezers; Other fruit juice extracting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/26—Racks
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Electric Suction Cleaners (AREA)
Abstract
An impeller reduces peak noise in the frequency range of 8-10 khz and is constructed, in disclosed embodiments, with a lower plate in a shape of a disk, an upper plate spaced apart from the lower plate by a predetermined distance and having a diameter corresponding with a diameter of the lower plate and a central air inlet, and a plurality of air guide members disposed radially between the lower plate and the upper plate having their outside corners chamfered.
Description
Technical field
The present invention relates generally to field of vacuum cleaners.Some disclosed embodiment are particularly related to the pusher (impeller) of vacuum cleaner motor assembly.
Background technology
Usually, vacuum cleaner produces partial vacuum, and collects dust and impurity by partial vacuum.Therefore, vaccum dust catcher is useful on the electric machine assembly that produces partial vacuum.Partial vacuum is produced by the pusher that sucks air when it is rotated by motor.
With reference to Fig. 1,2, traditional electric machine assembly 1 comprises motor 10, by motor 10 rotatable pushers 20 and will be by the diffuser 30 of 20 inhaled airs of pusher towards motor 10 guiding.
Pusher 20 has lower plate 21, upper plate 22 and a plurality of air guiding portion spare 23.Lower plate 21 is formed dish type, and is arranged on the motor shaft 11 of motor 10.Upper plate 22 is formed dish type with corresponding with lower plate 21, and has and lower plate 21 essentially identical diameters.Upper plate 22 has the air intake 25 that sucks air therein in the heart.A plurality of air guiding portion spares 23 radially are arranged between lower plate 21 and the upper plate 22 with the spacing of rule.Each air guiding portion spare 23 is formed the shape that is bent band with predetermined curvature.In one embodiment, an end 23a of air guiding portion spare 23 forms the right angle on the periphery of lower plate 21 and upper plate 22.Equally, air guiding portion spare 23 has such length: its outboard end 23a be positioned at lower plate 21 and upper plate 22 around within, and its medial extremity is outside the air intake 25 of upper plate 22.
Diffuser 30 is being set on the upper end of motor 10 in concentrically ringed mode outside the pusher 20.Has the gap with rotary driving unit 20 between diffuser 30 and the pusher 20.Diffuser 30 has a plurality of guide members, is used for guiding air when air is inhaled into and pass through pusher 20 towards motor 10 releases.
The operating in after this of conventional motors assembly 1 that comprises structure same as described above describes with reference to Fig. 1,2.
When the motor 10 of electric machine assembly 1 rotated, pusher 20 rotated by the lower plate 21 on the motor shaft 11 that is arranged on motor 10.When pusher 20 rotation, the dust that may comprise the suction brush (not shown) that the air of the carrying dust of dust and impurity is connected with the air intake 25 of the upper plate 22 of pusher 20 by the fluid ground suction that enters the mouth.Dust in air and impurity are removed by the dust collecting unit (not shown) time, and correspondingly, the air of basic cleaning enters the air intake 25 of pusher 20.The air that enters air intake 25 flows and discharges towards diffuser 30 along a plurality of air guiding portion spares 23.Air-cooled motor 10 that is discharged from diffuser 30 and the outlet by the main body (not shown) are discharged into outside the vacuum cleaner.
But because motor 10 rotation at a high speed, the vacuum cleaner of collecting dust and impurity by the suction force of electric machine assembly 1 produces suitable noise.Correspondingly, made efforts and reduced noise.A method is to change the air flow passage that discharges by electric machine assembly.Other method provides sound absorptive material.But these methods can not reduce noise effectively.The inventor finds that it is desirable reducing noise peak on the frequency of 8-10kHz, particularly in the noise that rotation produced of the pusher by electric machine assembly, so that operation is more comfortable to the user.
Summary of the invention
In certain embodiments, the pusher of vacuum cleaner is provided, and reduces the peak noise that produces in the process of the rotation of pusher, particularly in the frequency range of 8-10kHz.
In a further embodiment, electric machine assembly is provided with noise and reduces pusher.
In more disclosed embodiment, different advantages realizes that by the pusher that is provided for vacuum cleaner described vacuum cleaner comprises the lower plate of dish type; From the upper plate that lower plate is separated within a predetermined distance, upper plate has the diameter and the center air intake of corresponding lower plate; And a plurality of air guiding portion spares, described air guiding portion spare radially is arranged between upper plate and the lower plate, a plurality of air guiding portion spares on two turnings on their outboard end by lead angle.
In typical embodiment, satisfied following formula by the size of lead angle:
1.5mm≤B≤C/2
B is the size at lead angle turning measured on the width of air guiding portion spare, and C is the width of air guiding portion spare.
Equally, a plurality of air guiding portion spare can be connected to upper plate and lower plate with pitch (cogging joints).
Preferably, shorter along the size A at the measured lead angle turning of the length of air guiding portion spare than the distance between the pitch of the outboard end of air guiding portion part and outermost.Equally, preferably, this size A is approximately between 1.5mm and the about 3mm.
In a further embodiment, the pusher of vacuum cleaner comprises the lower plate of dish type; A plurality of air guiding portion spares, it radially is arranged on the lower plate and has the chamfering turning on their outer end; And upper plate, described upper plate is arranged on a plurality of air guiding portion spares, and upper plate has the corresponding diameter of inside starting point of center air inlet and the last chamfering of corresponding air guiding portion spare.
In a further embodiment, the electric machine assembly that is used for vacuum cleaner comprises motor and pusher, pusher comprises: be arranged on the lower plate on the motor shaft of motor, lower plate is the shape of dish, the upper plate that separates within a predetermined distance from lower plate, corresponding lower plate of the diameter that upper plate has and center air intake, and a plurality of air guiding portion spare that radially is arranged between lower plate and the upper plate, the chamfering on the outer end of their turning; And diffuser, described diffuser is set on the top part of motor, and diffuser will be from air that pusher aspirated towards motor guides.
In typical embodiment, the size at the turning of chamfering is selected according to following formula:
1.5mm≤B≤C/2
B is the size at the turning of the chamfering of measuring on the width of air guiding portion spare, and C is the width of air guiding portion spare.
Equally, a plurality of air guiding portion spare can be connected to upper plate and lower plate with pitch.
Preferably, shorter along the size A at the turning of the band chamfering of the linear measure longimetry of air guiding portion spare than the distance between the pitch of the outboard end of air guiding portion part and outermost.Equally, preferably, this size A is approximately between 1.5mm and the about 3mm.
In a further embodiment, the electric machine assembly that is used for vacuum cleaner comprises motor and pusher, pusher comprises: be arranged on the lower plate on the motor shaft of motor, lower plate has the shape of dish, a plurality of air guiding portion spares, radially being arranged on the lower plate of described a plurality of air guiding portion spares, the chamfering on two external corners of a plurality of air guiding portion spares, and upper plate, described upper plate is set on a plurality of air guiding portion spares, the diameter that upper plate has and center air intake corresponding with the length direction starting point at the chamfering turning of air guiding portion spare; And diffuser, described diffuser is set on the top part of motor, and diffuser will be from pusher institute inhaled air towards motor guides.
Additional embodiments provides a kind of vacuum cleaner, comprise: the suction brush, dust collecting unit, described dust collecting unit is connected with suction brush fluid and collects dust, and electric machine assembly, described electric machine assembly is connected with the dust collecting unit fluid and produces suction force.Electric machine assembly comprises motor; Pusher comprises: be arranged on the lower plate on the motor shaft of motor, lower plate is a dish type, upper plate separates within a predetermined distance from lower plate, upper plate has the diameter of corresponding lower plate and center air intake, and a plurality of air guiding portion spares, described a plurality of air guiding portion spare radially is arranged between lower plate and the upper plate, the chamfering on the outer end of their turning; And diffuser, described diffuser is arranged on the top part of motor, and diffuser will be from the pusher inhaled air towards motor guides.
Compare with traditional pusher, the EXPERIMENTAL EXAMPLE of pusher has reduced the total noise of peak value in the 8-10kHz frequency range.
The noise level of being found in the relative conventional apparatus, the electric machine assembly of incorporating the improvement pusher of disclosed different embodiment into has reduced the particularly peak noise in frequency range 8-10kHz of overall noise.
Description of drawings
These and/or others of the present invention and feature will from the following explanation of embodiment and in conjunction with the accompanying drawings and detail knowledge to, wherein:
Fig. 1 is the viewgraph of cross-section of traditional electric machine assembly;
Fig. 2 is the perspective view of the pusher that employed vacuum cleaner is used in the electric machine assembly shown in Fig. 1;
Fig. 3 is the illustrated planar figure of the pusher that rotates in diffuser;
Fig. 4 is the view by the noise source of the determined pusher of air flow computer sunykatuib analysis;
Fig. 5 is the perspective view of the pusher used according to the vacuum cleaner of first exemplary embodiments of the present invention;
Fig. 6 is the front view of the pusher used of the vacuum cleaner shown in Fig. 5;
Fig. 7 is the view of chamfering of the air guiding portion spare of the pusher used of the vacuum cleaner shown in Fig. 5;
Fig. 8 is that explanation has the view according to the electric machine assembly of the pusher of the first embodiment of the present invention;
Fig. 9 is used for the view that the air guiding portion spare of pusher is tested in first of noise comparative experiments;
Figure 10 is the noise with first test pusher of the air guiding portion spare shown in Fig. 9, and according to the view of the noise of the pusher of the first embodiment of the present invention;
Figure 11 is used for the view that the air guiding portion spare of pusher is tested in second of other noise comparative experiments;
Figure 12 be have the air guiding portion spare shown in Figure 11 the second test pusher noise and according to the view of the noise of the pusher of the first embodiment of the present invention;
Figure 13 is the perspective view of the pusher of vacuum cleaner according to a second embodiment of the present invention;
Figure 14 is the part front view of the pusher used of the vacuum cleaner shown in Figure 13;
Figure 15 is the view that has shown the electric machine assembly of pusher according to a second embodiment of the present invention;
Figure 16 is the view of the noise of the noise of traditional pusher and pusher according to a second embodiment of the present invention; And
Figure 17 has shown the view of the vacuum cleaner of electric machine assembly according to an embodiment of the invention.
The specific embodiment
In following explanation, similar reference numbers can be as the identical parts in the different accompanying drawings.Described embodiment and their detailed structure and parts just are used for assisting to understand the present invention.Like this, clearly, this law can be carried out with different modes, and without any need for specific feature described herein.Equally, known function or structure do not need to describe in detail, because they will make the present invention's unnecessary detailsization that becomes.
The computer simulation analysis of noise source is performed analyzes the noise that produces by rotary driving unit, and purpose is the peak noise that reduces among the frequency range 8-10kHz.The result of this computer simulation analysis describes with reference to Fig. 3,4.
Circulation of air in the pusher 20 is crossed the computer simulation of the rotation of the pusher 20 in as shown in Figure 3 the diffuser 30 and is analyzed.Analysis result is displayed among Fig. 4.With reference to Fig. 4, triangle afterbody 23b is connected respectively to the outboard end 23a of a plurality of air guiding portion spares 23.Triangle afterbody 23b is illustrated in applied force among the outboard end 23a of a plurality of air guiding portion spares 23.This indication noise outboard end 23a from a plurality of air guiding portion spares 23 when pusher 20 rotations produces.Correspondingly, the inventor determines may produce noise as shown in Figure 3 during rotation in diffuser 30 at pusher 20 alternately between the guide member 31 of the outboard end 23a of a plurality of air guiding portion spares 23 of pusher 20 and diffuser 30.In other words, when pusher 20 rotations, main noise source can be the outboard end 23a at a plurality of air guiding portion spares 23.
In typical embodiment, the shape of the outboard end 23a of air guiding portion spare 23 is changed, the diameter of the upper plate of pusher 20 also can be changed, and reducing from the caused noise of the rotation of pusher 20, particularly reduces the noise peak in the frequency range of 8-10kHz.
After this, certain embodiments of the present invention is described in detail with reference to the accompanying drawings.
With reference to Fig. 5,6, the pusher of using according to the vacuum cleaner of the first embodiment of the present invention 110 has lower plate 111, upper plate 112 and a plurality of air guiding portion spare 113.
Fig. 7 is the detailed view of the chamfering on the turning 113c of air guiding portion spare 113.
With reference to Fig. 7, preferably, short than the outboard end and the distance between the outermost pitch of air guiding portion part along the size A at the turning of the measured chamfering of the length of air guiding portion spare.After this size A will be called " lengthwise dimension " at band chamfering turning 113.Equally, preferably, this size A is approximately between 1.5mm and the about 3mm.Preferably, the length B of the air guiding portion spare of the width of chamfering turning 113c (" the width size " that after this be called chamfering turning 113c) is determined and satisfies formula 1:
1.5mm≤B≤C/2＜formula 1 〉
B is the width size of chamfering turning 113c, and C is the width of air guiding portion spare 113.
Equally, the length that has of air guiding portion spare 113 make one end 113a be positioned at lower plate 111 and upper plate 112 around within and an other end be positioned at outside the air intake 115 of upper plate 112.
Comprise the explanation that the operation of the pusher 110 that the vacuum cleaner of same structure is as mentioned above used will be more detailed.
With reference to Fig. 8, be used to have that electric machine assembly 100 according to the vacuum cleaner of the pusher of the first embodiment of the present invention comprises motor 101, the pusher 110 that rotated by motor 101 and by the diffuser 120 of 110 inhaled airs of pusher towards motor 101 guiding.
Usually employed about 3 in vacuum cleaner, 000rpm to 3, any dissimilar motor of the last operation of 600rpm can be used as motor 101.In the present embodiment, 3, the general-purpose machine of the last operation of 000rpm is used.But this example is not in order to limit the scope of the invention, because the motor of relative broad range can be used to this purpose.
Pusher 110 has lower plate 111, upper plate 112 and a plurality of air guiding portion spare 113.With reference to Fig. 5,8, lower plate 111 is formed disk shape, and its center is arranged on the motor shaft 102 of motor 101.Upper plate 112 by shape ring for disk shape with corresponding lower plate 111 and have and lower plate 111 essentially identical diameters.Upper plate 112 has the air intake of settling at the center 115 and is used to suck air.Equally, air intake 115 be formed with from upper plate 112 projectioies to predetermined height.The coupling part 114 that air intake 115 is connected with upper plate 112 is formed as the curved surface with predetermined curvature to allow inhaled air mobile reposefully.A plurality of air guiding portion spares 113 radially are arranged between lower plate 111 and the upper plate 112 with the spacing of rule.Each air guiding portion spare 113 is formed the shape that is bent band with predetermined curvature.In the present embodiment, 9 air guiding portion spare 113 usefulness pitches 116 are connected to upper plate 112 and lower plate 111.At this moment, towards two turning 113c chamfering of an end 113a of the ambient air guide member 113 of lower plate 111 and upper plate 112.Preferably, chamfering turning 113c satisfies aforesaid condition.In the present embodiment, if the width of air guiding portion spare 113 is C=7mm, the width size of chamfering part is B=C/2=3.5mm, and lengthwise dimension A is 3mm.In this embodiment, outermost pitch 116a, 116b open (referring to Fig. 7) from the outboard end 113a of air guiding portion spare 113 to surpass the 3mm branch.
Diffuser 120 is arranged on the top part of motor 101 in the concentric circles mode outside the pusher 110.Has the gap with rotary driving unit 110 between diffuser 120 and the pusher 110.Diffuser 20 has a plurality of guide members and is used at air by pusher 110 guiding air when motor 110 sucks and discharges.Diffuser 120 as shown in Fig. 3,8 is the electric machine assembly 100 employed typical diffusers that can be used for vacuum cleaner, and those of ordinary skill is appreciated that and can uses dissimilar diffusers.
After this operation that comprises the electric machine assembly that is used for vacuum cleaner 100 of aforesaid same structure will describe.
When the motor shaft 102 of electric machine assembly 100 rotated, the lower plate 111 that is arranged on the pusher 110 on the motor shaft 102 was rotated, and rotary driving unit 110 thus.When pusher 110 rotations, the air of carrying dust sucks by the dust inlet of the suction brush (not shown) that fluid ground is connected with the air intake 115 of pusher upper plate 112.The dust in air and the impurity of carrying dust are removed by the dust collecting unit (not shown) time, and correspondingly, the air of basic cleaning enters the air intake 115 of pusher 110.The air that enters air intake 115 is spread, and enters the medial extremity of a plurality of air guiding portion spares 113.The air of the medial extremity by a plurality of air guiding portion spares 113 discharges towards diffuser 120 by outboard end 113a.
In this embodiment, the pusher peak noise among the frequency range 8-10kHz is compared with the device with traditional pusher and is reduced, shown in table 1, Figure 10,12.In other words, compare with the first test pusher according to the peak noise of the pusher 110 of the first embodiment of the present invention and to reduce about 9dB, and compare with second test experiments and to have reduced about 7.3dB with air guiding portion spare as shown in figure 11 23 ' with air guiding portion spare as shown in Figure 9 23.On Figure 10,12, thicker curve 1 and 3 is indicated the noise according to the pusher of the first embodiment of the present invention respectively, and thinner line 2,4 is indicated the noise of first pilot blade and the second test pusher respectively.
＜table 1 〉
| The pusher type | Electric consumption (W) | Noise (dB) |
| First embodiment | 875 | 75.3 |
| The first test pusher | 896 | 86.3 |
| The second test pusher | 878 | 82.6 |
Two turning 113c chamferings according to the outboard end 113a of the air guiding portion spare 113 of the pusher 110 of the first embodiment of the present invention.The typical chamfer dimesion of chamfering turning 113c is A=3mm, B=3.5mm, (referring to Fig. 7) as mentioned above.Two turning 23d of the outboard end of the air guiding portion spare 23 of the first test pusher form the right angle, as shown in Figure 9.The air guiding portion spare 23 ' of the second test pusher has groove 23a ', and described groove 23a ' has predetermined radius on outboard end, as shown in figure 11.Pusher 110, the first and second test pushers according to the first embodiment of the present invention have 8 or 9 air guiding portion spares.Operate in 3, the general motor on the 000rpm is used to test.The view table first finger of the noise that is produced among Figure 10,12 shows the peak noise level in the frequency range of 8-10kHz.The frequency range of 8-10kHz generally includes the 2nd BPF (blade passing frequency (Blade Passage Frequency)) of pusher.BPF is illustrated in the number of times (Hz) that blade per second measured in the circulation of per second passes through herein.For example, when the rotary speed of motor is 3000rpm, pusher has 9 air guiding portion spares, and BPF is 4,500Hz.This frequency is called the first order (first-degree) BPF.Second level BPF is the twice of first order BPF.In this example, second level BPF is 9,000rpm.
The air-cooled motor 101 that is discharged from diffuser 120, and be released to outside the vacuum cleaner by main body (not shown) middle outlet.
With reference to Figure 13,14, be used for the pusher 110 ' that vacuum cleaner according to a second embodiment of the present invention uses and have lower plate 111, upper plate 112 ' and a plurality of air guiding portion spares 113.
Upper plate 112 ' is formed disk shape with corresponding with lower plate 111 and have a diameter shorter than lower plate 111.The diameter of upper plate 112 ' is determined corresponding with the chamfer dimesion of air guiding portion spare 113.Preferably, upper plate 112 ' has diameter and makes the length direction starting point 113s of chamfering turning 113c of the corresponding air guiding portion spare 113 of outer periphery 112a ' of upper plate 112 '.Upper plate 112 ' has the air intake 115 that sucks air at the center.Equally, air intake 115 is formed the height of being scheduled to from upper plate 112 ' projection.And the coupling part 114 ' that air intake 115 is connected with upper plate 112 ' is formed the curved surface with predetermined curvature flows reposefully to allow inhaled air.
A plurality of air guiding portion spares 113 radially are arranged between lower plate 111 and the upper plate 112 ' with the spacing of rule.Each air guiding portion spare 113 is formed the curved bel with predetermined curvature.Each air guiding portion spare 113 can be connected to upper plate 112 ' and lower plate 111 with different associated methods.In typical embodiment, each air guiding portion spare 113 usefulness pitches 116 are connected to upper plate 112 ' and lower plate 111.In one embodiment, the end 113a of air guiding portion spare 113 on around lower plate 111 and the upper plate 112 ' has chamfering on two turning 113c.After this chamfer process will not be described in detail, because its similar to the air guiding portion spare 113 of above-mentioned pusher 110 according to the first embodiment of the present invention.
With reference to Figure 14, the lengthwise dimension A of chamfering turning 113c is shorter than end 113a of air guiding portion part 113 and the distance that air guiding portion spare 113 is connected between outermost joint 116a, the 116b among the pitch 116 of lower plate 111 and upper plate 112 '.Equally, preferably, the lengthwise dimension A of the chamfering turning 113c of air guiding portion spare 113 from its original turning 113d greatly between 1.5mm and 3mm.
Equally, air guiding portion spare 113 preferably have the such one end of such length 113a be positioned at lower plate 111 around within, an other end is positioned at the outside of the air intake 115 of upper plate 112 '.
The operation that comprises the pusher 110 ' that is used for vacuum cleaner of structure same as described above will no longer be illustrated, because its operation to the pusher 110 of aforesaid first embodiment is similar.
Figure 15 is the viewgraph of cross-section that has shown the electric machine assembly that is used for vacuum cleaner with pusher 110 ' according to a second embodiment of the present invention.
With reference to Figure 15, the pusher 110 ' that the electric machine assembly 100 ' of vacuum cleaner that is used to have the pusher 110 ' of the second embodiment of the present invention comprises motor 101, rotated by motor 101 and towards the diffuser 120 of motor 101 guiding by the air that pusher 110 ' aspirated.
Be generally used for having roughly 3 in the vacuum cleaner, the dissimilar motor between the 000rpm and 3,600 can be selected as motor 101.In the present embodiment, common has 3, and the motor of 000rpm is used.But scope of the present invention is not limited to any specific motor 101.
Pusher 110 ' has lower plate 111, upper plate 112 ' and a plurality of air guiding portion spares 113.With reference to Figure 13,14, lower plate 111 is formed dish type, and its center is set on the motor shaft 102 of motor 101.Upper plate 112 ' is formed dish type with corresponding lower plate 111 and have the corresponding diameter of starting point with the chamfering turning 113c of a plurality of air guiding portion spares 113.Upper plate 112 ' has the center air intake 115 that is used to aspirate the suction air.Equally, air intake 115 is formed with protruding to predetermined height from upper plate 112 '.The coupling part 114 ' that air intake 115 is connected with upper plate 112 ' is formed as the curved surface with predetermined curvature to flow with allowing the suction air trim.A plurality of air guiding portion spares 113 radially are arranged between lower plate 111 and the upper plate 112 ' with the spacing of rule.Each air guiding portion spare 113 is formed the shape of the curved bel with predetermined curvature.In the present embodiment, 9 air guiding portion spares are connected to upper plate 112 ' and lower plate 111 with pitch 116.Around the most close lower plate 111 and on the end 113a of the air guiding portion spare 113 of upper plate 112 ', two turning 113c chamferings.Preferably, the turning 113c of chamfering is formed to satisfy aforesaid condition.In the present embodiment, if the width C of air guiding portion spare 113 approximately is 7mm, the width size B of chamfering turning 113c is B=C/2=3.5mm, and its width size A approximately is 3mm.In one embodiment, pitch 116a, the 116b of outermost are with 3mm or bigger outboard end 113a separately (referring to Figure 14) from air guiding portion spare 113.
Diffuser 120 is being set at outside the pusher 110 ' on the top part of motor 101 in concentrically ringed mode.Has the gap with rotary driving unit 110 ' between diffuser 120 and the pusher 110 '.When air passed through pusher 110 ' towards motor 101 suctions and release, diffuser 120 had a plurality of guide members that are used to guide air.Diffuser 120 as shown in figure 15 is the examples that can be used for the diffuser of electric machine assembly 100 ', is used for vacuum cleaner according to electric machine assembly 100 ' of the present invention.Dissimilar diffusers can be used in the electric machine assembly 100 '.
Comprise that structure as mentioned above, the operation of electric machine assembly 100 ' that is used to have the vacuum cleaner of pusher 110 ' according to a second embodiment of the present invention will no longer be elaborated, because it is similar to the electric machine assembly 100 that has pusher 110 according to the first embodiment of the present invention aforesaid.
In embodiment as shown in the figure, compare with electric machine assembly with traditional pusher, peak value pusher noise in about 8-10kHz frequency range of the electric machine assembly 100 ' with pusher 110 ' according to a second embodiment of the present invention is significantly reduced, as table 2 and shown in Figure 16.Compare with traditional pusher by the peak noise that pusher 110 ' produced according to a second embodiment of the present invention and to have reduced about 6.5dB.On Figure 16, the noise of thicker line 5 indications pusher 110 ' according to a second embodiment of the present invention, the noise of the pusher that fine rule 6 indications are traditional.The overall noise of the average noise in equally, total frequency range reduces about 1.6dBA.
＜table 2 〉
| The pusher type | Overall noise (dBA) | Peak noise 8-10kHz (dB) |
| Second embodiment | 93.4 | 83.4 |
| Tradition | 94.9 | 89.9 |
Two turning 113c chamferings of the outboard end 113a of the air guiding portion spare 113 of pusher 110 ' according to a second embodiment of the present invention.The size of the turning 113c of chamfering is A=3mm, B=3.5mm, as mentioned above.The upper plate 112 ' of pusher 110 ' has the diameter (referring to Figure 14) of starting point 113s of the chamfering turning 113c of corresponding air guiding portion spare 113.Has the air guiding portion spare 23 that has the right angle on the turning 23d of a plurality of outboard ends at them according to the pusher 20 of traditional prior art, as shown in Figure 9.Pusher 110 ' according to a second embodiment of the present invention and traditional pusher 20 have 8 or 9 air guiding portion spares respectively.3, the common motor of the last operation of 000rpm is used as the noise test.Term " overall noise " refers to the average noise in total frequency range.Approximately " peak noise " in the scope of 8-10kHz refers to the noise with the peak value in the scope of frequency 8-10kHz.The frequency range of 8-10kHz generally includes the 2nd BPF (pusher passes through frequency) of pusher.BPF represents the number of times (Hz) that blade per second that per second is measured with circulation passes through.For example, when motor rotates on 3000rpm and pusher when having 9 air guiding portion spares, BPF is 4,500Hz.This is called as first order BPF.Second level BPF is the twice of first order BPF.In the present embodiment, second level BPF is about 9,000rpm.
Figure 17 is the view that has illustrated according to the vacuum cleaner of the electric machine assembly 100 of the pusher 110 of the first embodiment of the present invention.
With reference to Figure 17, vacuum cleaner 200 according to the present invention comprises suction brush 210, described suction brush 210 sucks dust and impurity, the extension 220 that fluid ground connects between suction brush 210 and main body 230, and described main body 230 is separated into dust and collects part (not shown) and motor part 231.
Suction brush 210 has dust inlet (not shown), and described dust inlet sucks dust and impurity in the bottom.From being set on the dust collection part (not shown) by the air separation of the suction brush 210 carrying dusts that sucked and the dust collecting unit (not shown) of collection dust and impurity.For example, dirt bag or Cyclonic dust collector unit can be used as dust collecting unit.The electric machine assembly 100 that sucks the suction force of dust and impurity by suction brush 210 is set within the motor part 231.The diffuser 120 of pusher 110 (with reference to figure 8) that electric machine assembly 100 has motor 101, rotated by motor 101 and the air that aspirated by pusher 110 towards motor 101 guiding.Pusher 110 has a plurality of air guiding portion spares 113.The outboard end 113a of air guiding portion spare 113 has chamfering turning 113c.Because electric machine assembly 100 is to aforesaid similar, with detailed.
When vacuum cleaner 200 was open for clean operation, the motor 101 that is placed in the motor part 231 began rotation according to the present invention.When motor 101 rotation, be arranged on pusher 110 rotations on the end of motor shaft 102.When pusher 110 rotations, the air of carrying dust aspirates by the dust inlet of suction brush 210.Be contained in carrying dust in air of dust and impurity and be removed when dust is collected dust collecting unit in the part, and the air that the result is carried dust is cleaned by being placed in.The air that is cleaned enters the air intake 115 of pusher 110, and the outboard end 113a by a plurality of air guiding portion spares 113 also enters diffuser 120 (referring to Fig. 7,8).At this moment, because two turning 113c chamferings of a plurality of air guiding portion spares 113, the peak noise in the 8-10kHz frequency range is reduced.The air that enters in the diffuser 120 is discharged into outside the main body 230 of vacuum cleaner 200 by motor 101 and by exporting 233.
Owing to have the operation and the structural similarity of vacuum cleaner of the pusher 110 of the operation of vacuum cleaner of electric machine assembly 100 ' and structure and aforesaid first embodiment, the Therefore, omited describes in detail, and described electric machine assembly 100 ' has pusher 110 ' according to a second embodiment of the present invention.
Although preferred embodiments of the present invention have been disclosed for illustrative, those of ordinary skill are appreciated that and can make amendment to the present invention under the situation that does not deviate from spirit of the present invention and essence, its scope is by claims and be equal to and limit.
Claims (12)
1. pusher that is used for vacuum cleaner comprises:
The lower plate of disk shape;
From the upper plate that lower plate is separated within a predetermined distance, upper plate has the corresponding diameter of board diameter down and the air intake at its center; And
A plurality of air guiding portion spares, described a plurality of air guiding portion spares radially are arranged between upper plate and the lower plate, air guiding portion spare on two outboard end by lead angle.
2. the pusher that is used for vacuum cleaner according to claim 1 is characterized in that the size at chamfering turning satisfies formula 1.5mm≤B≤C/2, and B is the width size at chamfering turning, and C is the width of air guiding portion spare.
3. the pusher that is used for vacuum cleaner according to claim 1 is characterized in that, the lengthwise dimension at chamfering turning is approximately between 1.5mm and the 3mm.
4. pusher that is used for vacuum cleaner comprises:
The lower plate of disk shape;
A plurality of air guiding portion spares, it radially is arranged on the lower plate, and a plurality of air guiding portion spares have the chamfering turning on outboard end; And
Upper plate, described upper plate are arranged on a plurality of air guiding portion spares, and upper plate has the diameter of length direction starting point at the chamfering turning of center air inlet and corresponding air guiding portion spare.
5. the pusher that is used for vacuum cleaner according to claim 4 is characterized in that the size at chamfering turning satisfies formula 1.5mm≤B≤C/2, and B is the width size at chamfering turning, and C is the width of air guiding portion spare.
6. the pusher that is used for vacuum cleaner according to claim 4 is characterized in that, the lengthwise dimension at chamfering turning is approximately between 1.5mm and the 3mm.
7. electric machine assembly that is used for vacuum cleaner comprises:
Motor;
Pusher, described pusher comprises:
Be arranged on the lower plate on the motor shaft of motor, lower plate is the shape of dish,
From the upper plate that lower plate is separated within a predetermined distance, upper plate have the center air intake and with the corresponding diameter of the diameter of lower plate, and
A plurality of air guiding portion spares that radially are arranged between lower plate and the upper plate, two external corners chamferings of air guiding portion spare; And
Diffuser, described diffuser are set on the top part of motor, and diffuser will be from air that pusher aspirated towards motor guides.
8. the electric machine assembly that is used for vacuum cleaner according to claim 7 is characterized in that the size at chamfering turning satisfies formula 1.5mm≤B≤C/2, and B is the width size at chamfering turning, and C is the width of air guiding portion spare.
9. the electric machine assembly that is used for vacuum cleaner according to claim 7 is characterized in that, the length of the length direction at chamfering turning is greatly between 1.5mm and 3mm.
10. electric machine assembly that is used for vacuum cleaner comprises:
Motor;
Pusher, described pusher comprises:
The lower plate of dish type;
A plurality of air guiding portion spares, described a plurality of air guiding portion spares radially are arranged on the lower plate, the chamfering on two external corners of a plurality of air guiding portion spares, and
Upper plate, described upper plate are set on a plurality of air guiding portion spares, and upper plate has corresponding diameter of length direction starting point and the center air intake with the chamfering turning of air guiding portion spare; And
Diffuser, described diffuser are set on the top part of motor, and diffuser will be from pusher institute inhaled air towards motor guides.
11. the electric machine assembly that is used for vacuum cleaner according to claim 10 is characterized in that the size at chamfering turning satisfies formula 1.5mm≤B≤C/2, B is the width size at chamfering turning, and C is the width of air guiding portion spare.
12. the electric machine assembly that is used for vacuum cleaner according to claim 10 is characterized in that, the lengthwise dimension at chamfering turning is approximately between 1.5mm and the 3mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20040103355 | 2004-12-09 | ||
| KR20040103355 | 2004-12-09 | ||
| KR20050015069 | 2005-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1785106A true CN1785106A (en) | 2006-06-14 |
Family
ID=36782783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101075487A Pending CN1785106A (en) | 2004-12-09 | 2005-09-27 | Vacuum cleaner impeller and motor assembly |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100633431B1 (en) |
| CN (1) | CN1785106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525336A (en) * | 2010-12-07 | 2012-07-04 | 株式会社牧田 | Portable cleaner |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8141201B2 (en) * | 2008-02-14 | 2012-03-27 | Panasonic Corporation | Electric fan |
| KR101331731B1 (en) | 2011-12-29 | 2013-11-20 | 삼성전기주식회사 | Motor assembly for vacuum cleaner |
-
2005
- 2005-02-23 KR KR1020050015069A patent/KR100633431B1/en not_active IP Right Cessation
- 2005-09-27 CN CNA2005101075487A patent/CN1785106A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525336A (en) * | 2010-12-07 | 2012-07-04 | 株式会社牧田 | Portable cleaner |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100633431B1 (en) | 2006-10-13 |
| KR20060065413A (en) | 2006-06-14 |
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