CN203743072U - Air supply device and dust collector - Google Patents
Air supply device and dust collector Download PDFInfo
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- CN203743072U CN203743072U CN201420125829.XU CN201420125829U CN203743072U CN 203743072 U CN203743072 U CN 203743072U CN 201420125829 U CN201420125829 U CN 201420125829U CN 203743072 U CN203743072 U CN 203743072U
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- impeller
- motor part
- blast device
- outer cover
- gas flow
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- 239000000428 dust Substances 0.000 title abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 23
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 11
- 238000001556 precipitation Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 235000019994 cava Nutrition 0.000 description 2
- 210000001364 upper extremity Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Electric Suction Cleaners (AREA)
Abstract
The utility model provides an air supply device and a dust collector. The air supply device comprises a motor part, an impeller, an upper outer cover and a main body outer cover. The impeller is connected with a rotating part of the motor part, sucks air from above and discharges air facing the outer portion or the outer portion and the lower portion in the radial direction. The upper outer cover is provided with an inner circumferential surface covering the top of the impeller. The center of the upper outer cover is provided with an air suction port. The outer circumference of the motor part is covered with the main body outer cover. Tubular spaces are formed between the main body outer cover and the motor part. The tubular spaces comprise the first tubular space and the second tubular space. The first tubular space is located below the outer edge part of the impeller. The second tubular space is located below the first tubular space and provided with multiple fluid flow paths. Flow path inlets of multiple air flow paths are located at the positions below a hypothetical extension line formed by connecting the lower end of the inner diameter of the air suction port with the lower end of the outer circumference of the impeller.
Description
Technical field
The utility model relates to a kind of electrodynamic type blast device.Blast device is for example installed in vacuum cleaner.
Background technique
The blast device that is installed in vacuum cleaner requires static pressure.In Japanese Laid-Open Patent Publication 2010-281232 communique and Japanese Laid-Open Patent Publication 2011-80427 communique, such blast device is disclosed for example.In these blast devices, be provided with the air guide that air-flow is directed to below from the side of impeller.Attract air from the central authorities of impeller, discharge air towards the side of impeller.Air by air guide be directed into be positioned at below motor around.
But, if air guide is set in the side of impeller, the in the situation that of impeller High Rotation Speed, can between impeller and air guide, produce noise.In the situation that blast device is used for to the people's livelihood articles for use such as vacuum cleaner, reduce noise particular importance.On the other hand, according to the position of the blast device in equipment or structure around, existence need to be by the situation of blast device miniaturization diametrically.But if air guide is positioned at the side of impeller, the miniaturization of blast device becomes difficulty.
Model utility content
The purpose of this utility model is to provide a kind of blast device, and it can either maintain static pressure can reduce again noise, and miniaturization diametrically.
The related blast device of the illustrated mode of execution of the utility model comprises motor part, impeller, upper outer cover and main body outer cover, the central axis of described motor part is towards above-below direction, described impeller is positioned at the top of described motor part, and be connected with the rotary part of described motor part, air-breathing from top by rotation, and towards radially foreign side or radially foreign side and below Exhaust Gas, described upper outer cover has the inner peripheral surface that covers the periphery of described impeller and the top of outer edge, and there is intakeport in central authorities, described main body outer cover covers the periphery of described motor part, and and described motor part between form tubular space.Described tubular space comprises the first tubular space and the second tubular space, described the first tubular space is positioned at the below of the underpart of the outer edge of described impeller, described the second tubular space is positioned at the below in described the first tubular space, and has the multiple gas flow paths along circumferential array.Blast device is characterised in that, the stream entrance of described multiple gas flow paths is positioned at than the imaginary elongation line that the internal diameter lower end of described intakeport is connected with the periphery underpart of described impeller position on the lower.
And in blast device, the external diameter of described impeller is less than the external diameter in described tubular space.
And in blast device, described multiple gas flow paths are towards peripheral, oblique, and with respect to the stream entrance of described gas flow path, flowing path outlet is positioned at the sense of rotation front of described impeller.
And, blast device also has lower annulus, described lower annulus is positioned at the below of described motor part, and vertical with described central axis and in the form of a ring, the spatial placement between described motor part and described lower annulus have from the lower end of described multiple gas flow paths towards inwardly extend side in footpath multiple gas flow path.
And, in blast device, the lower surface of the circuit board that the end face of described multiple lower gas flow paths is described motor part.
And blast device also has another impeller, described another impeller is positioned at the below of described lower annulus, and is connected with described rotary part.
And, in blast device, the outer circumferential face of the metal housing that the inner side surface that forms the described tubular space between described motor part and described main body outer cover is described motor part or keep the outer circumferential face of the metal holding part of the periphery of described motor part.
The related blast device of illustrated another mode of execution of the utility model comprises motor part, impeller, upper outer cover, main body outer cover and intermediate member, the central axis of described motor part is towards above-below direction, described impeller is positioned at the top of described motor part, and be connected with the rotary part of described motor part, air-breathing from top by rotation, and towards radially foreign side or radially foreign side and below Exhaust Gas, the described upper outside lid periphery of described impeller and the top of outer edge of covering, and there is intakeport in central authorities, described main body outer cover covers the periphery of described motor part, described intermediate member is presented axially between described impeller and described motor part, and there is the annulus that surrounds described central axis.Described annulus is positioned at the described outer edge of described impeller or the below of described periphery, and there is depression the steering channel along circumferential extension downward, blast device is characterised in that, described annulus has multiple injection wells in described steering channel, and described multiple injection wells are by the tubular space guiding to from the gas of described impeller between described motor part and described main body outer cover.
And in blast device, described multiple injection wells are along with tilting to the sense of rotation of described impeller downward.
And in blast device, described steering channel is present in described annulus complete cycle, the lower end of the described outer edge of described impeller is positioned at described steering channel.
And blast device also has multiple gas flow paths, the space of described multiple gas flow paths between described motor part and described main body outer cover, and along circumferential array.
And in blast device, described multiple gas flow paths are towards peripheral, oblique, and with respect to the stream entrance of described gas flow path, flowing path outlet is positioned at the sense of rotation front of described impeller.
And, blast device also has lower annulus, described lower annulus is positioned at the below of described motor part, vertical with described central axis and in the form of a ring, the spatial placement between described motor part and described lower annulus have from the lower end of described multiple gas flow paths towards inwardly extend side in footpath multiple gas flow path.
And, in blast device, the lower surface of the circuit board that the end face of described multiple lower gas flow paths is described motor part.
And blast device also has another impeller, described another impeller is positioned at the below of described lower annulus, and is connected with described rotary part.
And, in blast device, the outer circumferential face of the metal housing that the inner side surface that forms the described tubular space between described motor part and described main body outer cover is described motor part or keep the outer circumferential face of the metal holding part of the periphery of described motor part.
A kind of vacuum cleaner, it has the suction tube that above-mentioned blast device and stream are connected with the described intakeport of described upper outer cover.
The utility model is also applicable to have the vacuum cleaner of blast device.
According to the utility model, the static pressure that can either maintain blast device can reduce again noise, can also be by blast device miniaturization diametrically.
Brief description of the drawings
Fig. 1 is the figure that represents vacuum cleaner.
Fig. 2 is the stereogram of blast device.
Fig. 3 is the longitudinal section of blast device.
Fig. 4 be observe from oblique upper the stereogram of impeller.
Fig. 5 be from oblique beneath to the stereogram of impeller.
Fig. 6 is the stereogram of the main body outer cover observed from oblique upper.
Fig. 7 be from oblique beneath to the stereogram of main body outer cover.
Fig. 8 is the stereogram of the diffuser observed from oblique upper.
Fig. 9 be from oblique beneath to the stereogram of diffuser.
Figure 10 is the figure of the axial position of the stream entrance for air flow path is described.
Figure 11 is the plan view of another blast device.
Figure 12 is the longitudinal section of another blast device.
Figure 13 is the stereogram of the intermediate member observed from oblique upper.
Figure 14 is the plan view of intermediate member.
Figure 15 is the longitudinal section of injection well.
(symbol description)
1,1a blast device
8 vacuum cleaner
Outer cover on 11
12 main body outer covers
The upper impeller of 15a
Impeller under 15b
16 motor part
17 intermediate members
31 rotary parts
71 tubular spaces
72 imaginary elongation lines
73 times air flow paths
81 suction tubes
113 intakepories
131 times annulus
154 (blade) outer edge
171 annulus
174 steering channels
175 injection wells
321 motor housings
324 circuit boards
711 first tubular spaces
712 second tubular spaces
713 air flow paths
714 stream entrances
71 flowing path outlets
J1 central axis
Embodiment
In this manual, by the upside of the central axis J1 direction of the motor part of the blast device in Fig. 3 referred to as " upside ", by downside referred to as " downside ".In addition, above-below direction is to define for convenience of description, needn't be consistent with gravitational direction.And, the direction of the direction parallel with central axis J1 or almost parallel is called to " axially ", by centered by central axis J1 radially referred to as " radially ", by centered by central axis J1 circumferentially referred to as " circumferentially ".
Fig. 1 is the figure that represents the vacuum cleaner 8 that comprises the related blast device 1 of the illustrated mode of execution of the utility model.Represent the outward appearance of vacuum cleaner 8 with double dot dash line.
Vacuum cleaner 8 comprises suction tube 81 and main body 82.Main body 82 comprises blast device 1.Be provided with and omit illustrated attraction brush at the end of suction tube 81.In main body 82, be provided with dust precipitation chamber 821 and exhaust space 822.Dust precipitation chamber 821 is connected with suction tube 81.Blast device 1 is connected with dust precipitation chamber 821 and exhaust space 822.
Fig. 2 is the stereogram of blast device 1.Blast device 1 is substantial cylindrical shape.Blast device 1 comprises intakeport 113 and multiple relief opening 142.Intakeport 113 is positioned at center upper portion.The stream of suction tube 81 is connected with intakeport 113 by dust precipitation chamber 821.Relief opening 142 in the bottom of outer circumferential face along circumferential array.Be discharged to the outside of main body 82 from exhaust space 822 from the exhaust of relief opening 142.
Fig. 3 is the longitudinal section of blast device 1.The detail section in cross section has omitted parallel oblique line.Figure below too.Blast device 1 comprises outer cover 11, main body outer cover 12, diffuser 13 and lower outer cover 14.In blast device 1, utilize these constituting components to form inner space.The inner space of blast device 1 also comprises impeller 15a, motor part 16, lower impeller 15b.
Upper outer cover 11 comprises the peripheral part 111 of the periphery that covers upper impeller 15a and covers the top 112 of the top of the outer edge of upper impeller 15a.Upper outer cover 11 has intakeport 113 in the central authorities on top 112.Top 112 is along with inwardly tilting just and upward towards footpath.Peripheral part 111 extends downward from the peripheral part on top 112.Top 112 is connected by level and smooth curved surface with peripheral part 111.The inner peripheral surface of upper outer cover 11 covers the upper periphery of impeller 15a and the top of outer edge.
Upper impeller 15a is positioned at the top of motor part 16.Upper impeller 15a is connected with the rotary part of motor part 16, and rotates centered by central axis J1.By upper impeller 15a rotation, utilize intakeport 113 air-breathing from top.Air is discharged towards foreign side radially by impeller 15a.Upper impeller 15a also can be towards radially air is discharged in foreign side and below as diagonal flow fan.Because periphery and the top of upper impeller 15a are covered by upper outer cover 11, therefore air flowed downward in the interior week of upper outer cover 11.Particularly, because the top 112 of upper outer cover 11 is connected smoothly with peripheral part 111, therefore air is directed to below efficiently.
Fig. 4 be observe from oblique upper the stereogram of impeller 15a.Fig. 5 be from oblique beneath to the stereogram of impeller 15a.Upper impeller 15a comprises base portion 151, multiple blade 152 and blade joint 153.Base portion 151 is the plectane vertical with central axis J1.Multiple blades 152 are disposed at the upper surface of base portion 151.Multiple blades 152 are along circumferential array.
Each blade 152 is outstanding upward from the upper surface of base portion 151, and extends from base portion 151 center towards foreign side radially.The upper limb of each blade 152 is along with towards foreign side radially and downward.Each blade 152 extends to the radially foreign side of base portion 151.Extend to than base portion 151 position on the lower than the base portion of each blade 152 151 outer edge 154 in the outer part.Blade joint 153 upwards connected the upper end of outer edge 154 in week.
Motor part 16 comprises rotary part 31, stationary part 32 and pair of bearings 33.Rotary part 31 comprises axle 311, magnet support 312 and rotor magnet 313.Axle 311 configures centered by central axis J1.The upper end of axle 311 is connected with the central authorities of the base portion 151 of upper impeller 15a.Rotor magnet 313 is fixed on axle 311 indirectly by magnet support 312.Rotor magnet 312 upwards has multiple magnetic poles in week.
Stationary part 32 comprises motor housing 321, stator 322, pair of bearings holding part 323 and circuit board 324.It is roughly cylindric that motor housing 321 is.The outer circumferential face of motor housing 321 is the outer circumferential face of motor part 16.Stator 322 is fixed on the inner peripheral surface of motor housing 321.In stator 322, towards footpath, inwardly side is opposed with rotor magnet 313 on the top of tooth.Bearing cage 323 is positioned at top and the bottom of motor housing 321.Maintain bearing 33 at bearing cage 323.Axle 311 is supported as rotating centered by central axis J1 by stationary part 32 by bearing 33.Circuit board 324 is positioned at the below of stator 322.Circuit board 324 is in the form of a ring or roughly circular-arc and be vertical with central axis J1 tabular.Circuit board 324 is positioned at the radial outside of the bearing cage 323 of downside.
It is roughly cylindric that main body outer cover 12 is.Main body outer cover 12 covers the periphery of motor part 16.The upper end of main body outer cover 12 is connected with the lower end of upper outer cover 11.The base portion 151 of the upper end of main body outer cover 12 and upper impeller 15a is opposed diametrically.Between motor part 16 and main body outer cover 12, form tubular space 71.The bottom of the outer edge 154 of blade 152 is positioned at tubular space 71.In blast device 1, tubular space 71 is cylindric, cylindric but tubular space 71 is not defined as, and size that also can diameter is fixing in the axial direction.But, in blast device 1, in order to realize miniaturization and to save electric power, the external diameter of upper impeller 15a is arranged littlely than the external diameter in tubular space 71.In addition, the parts that main body outer cover 12 and upper outer cover 11 also can be integrated.
In blast device 1, the inner side surface that forms tubular space 71 is the outer circumferential face of the motor housing 321 of motor part 16.Motor housing 321 is metal housing.Thus, by the mobile air in tubular space 71, motor part 16 is by cooling efficiently.The inner side surface that forms tubular space 71 also can be the outer circumferential face of the metal holding part of the periphery that keeps motor part 16.
Fig. 6 is the stereogram of the main body outer cover 12 observed from oblique upper.Fig. 7 be from oblique beneath to the stereogram of main body outer cover 12.Main body outer cover 12 comprises cylindrical part 121 and multiple guide blades 122.Cylindrical part 121 is roughly cylindric centered by central axis J1.Cylindrical part 121 is positioned at the radial outside of motor part 16.Guide blades 122 is positioned at the inner peripheral surface of cylindrical part 121.The upper end of guide blades 122 is opposed diametrically across motor housing 321 and stator 322.Multiple guide blades 122 are in circumferential first-class arranged spaced.Each guide blades 122 is inwardly just give prominence to towards footpath from the inner peripheral surface of cylindrical part 121 tabular.In addition, the thickness of guide blades 122 also can not fixed.Each guide blades 122 extends downward, but guide blades 122 is along with the sense of rotation inclination of impeller 15a downward and upwards.Each guide blades 122 is from extending downward as upper/lower positions, this position be from the upper end of cylindrical part 121 downward away from position.
If motor part 16 is disposed in main body outer cover 12, form by one group of guide blades 122 adjacent one another are, the outer circumferential face of motor part 16 and the inner peripheral surface of cylindrical part 121 air flow path 713 that air is guided downward.That is to say, tubular space 71 comprises the first tubular space 711 and the second tubular space 712, described the first tubular space 711 is positioned at the top of air flow path 713, and described the second tubular space 712 is positioned at the below in the first tubular space 711, and comprises multiple air flow paths 713.The first tubular space 711 is positioned at the below of 154 underparts, outer edge of impeller 15a.
Multiple air flow paths 713 are along circumferential array.Because guide blades 122 tilts, air flow path 713 is also towards peripheral, oblique.With respect to the stream entrance 714 of air flow path 713, flowing path outlet 715 is positioned at the sense of rotation front side of impeller 15a.By air flow path 713 is set, prevents from flowing into from upper impeller 15a the air inversion in tubular space 71, thereby can improve the static pressure of blast device 1.And, because air flow path 713 tilts, therefore can further improve static pressure.
Diffuser 13 is installed on the lower end of main body outer cover 12.The upper end of diffuser 13 and motor housing 321 lower ends are opposed diametrically.Fig. 8 is the stereogram of the diffuser 13 observed from oblique upper.Fig. 9 be from oblique beneath to the stereogram of diffuser 13.Diffuser 13 comprises lower annulus 131, multiple guide blades 132 and peripheral part 133.Lower annulus 131 is the ring-type vertical with central axis J1, and is positioned at the below of motor part 16.The upper surface of lower annulus 131 is vertical with central axis J1, and the lower surface of lower annulus 131 is along with inwardly tilting just and upward towards footpath.Multiple guide blades 132 are disposed at the upper surface of lower annulus 131.Multiple guide blades 132 are along circumferential array.The bottom of the peripheral part 133 of diffuser 13 forms a part for relief opening 142.
Each guide blades 132 is outstanding tabular upward from the upper surface of lower annulus 131, and extends from lower annulus 131 center towards foreign side radially.The upper limb of each guide blades 132 is vertical with central axis J1.The circuit board 324 of motor part 16 approach with the upper end of guide blades 132 or with the upper end in contact of guide blades 132.Thus, the spatial placement between motor part 16 and lower annulus 131 has multiple lower air flow paths 73.Each lower air flow path 73 is made up of circuit board 324, lower annulus 131 and a pair of guide blades 132 adjacent one another are.The thickness of guide blades 132 both can be fixed, and also can not fix.Each guide blades 132 both can be linearly, also can curved shape.
The quantity of guide blades 132 is identical with the quantity of the guide blades 122 of main body outer cover 12.The end of the radial outside of each guide blades 132 is positioned at the below of the lower end of the guide blades 122 of main body outer cover 12.The lower end of the guide blades 122 of main body outer cover 12 also can be positioned at the radial outside of the outer end of the guide blades 132 of diffuser 13.Configure in the mode being connected with guide blades 132 by guide blades 122, multiple lower air flow paths 73 are from lower end inwardly side's extension towards footpath of multiple air flow paths 713.Thus, between motor part 16 and lower annulus 131, also can adjust air-flow, and can improve the static pressure of blast device 1.And, because the end face of multiple lower air flow paths 73 is the lower surface of circuit board 324, therefore efficiently by cooling circuit board 324.
Lower impeller 15b has the structure identical with upper impeller 15a.In the following description, the symbol identical with upper impeller 15a to the constituting component mark of lower impeller 15b.Lower impeller 15b is positioned at the below of lower annulus 131, and is connected with axle 311.Lower impeller 15b is air-breathing from the central opening of diffuser 13, and radius vector to foreign side by Bas Discharged.As mentioned above, the lower surface of diffuser 13 caves in upward.Form the face identical with the inner peripheral surface of upper outer cover 11 by the lower surface of lower annulus 131 and the inner peripheral surface of peripheral part 133.That is to say, the end face of the top of lower impeller 15b is along with tilting downwards towards foreign side radially, and barrel surface is extended downward from the periphery of end face.End face is connected smoothly with barrel surface.Further improved the static pressure of blast device 1 by lower impeller 15b.
Lower outer cover 14 is by the below sealing of diffuser 13.Lower outer cover 14 comprises the annular slot 141 centered by central axis J1.Annular slot 141 caves in downward.The bottom of the outer edge 154 of the blade 152 of lower impeller 15b is positioned at annular slot 14.Lower outer cover 14 forms towards multiple relief openings 142 of foreign side's opening radially in periphery together with diffuser 13.Each relief opening 142 is connected with annular slot 141.Air is roughly directly discharged to outside or is discharged to outside after in annular slot 141 from lower impeller 15b.As shown in Figure 2, the internal surface of the opening of relief opening 142 tilts towards foreign side radially along the sense of rotation of air.
Figure 10 is the figure of the axial position of the stream entrance 714 for air flow path 713 is described.In blast device 1, in order to dwindle radial dimension, stream entrance 714 is not configured in the radial outside of impeller 15a.Therefore, stream entrance 714 is disposed at the below of the outer edge 154 of blade 152.But, the air of the oscillating component producing if stream entrance 714, near outer edge 154, comprises the disorder of the air-flow that in reason, impeller 15a causes can with stream entrance 714 strong collision, it is large that noise becomes.Therefore, as mentioned above, in blast device 1, above air flow path 713, be provided with the first tubular space 711.
Form the wall in the outside in the first tubular space 711, namely main body outer cover 12 inner peripheral surface by with air collision, thereby performance reduces the impact force of air and weakens the effect of the oscillating component of air.From this viewpoint, preferred flow path entrance 714 be positioned at than from intakeport 113 towards the imaginary air stream of tubular space 71 flows straight position on the lower.Therefore, stream entrance 714 be configured in be compared to imaginary straight line that the internal diameter lower end of intakeport 113 is connected with the periphery underpart of upper impeller 15a with and the imaginary elongation line 72 of elongation line position on the lower.Thus, can effectively reduce noise.
Figure 11 is the plan view of the related blast device 1a of illustrated another mode of execution of the utility model.Figure 12 is the longitudinal section of blast device 1a.In blast device 1a, be provided with two relief openings 142 at the outer circumferential face of bottom.Blast device 1a, compared with blast device 1, in the axial direction, also has intermediate member 17 between upper impeller 15a and motor part 16.The bearing cage 323 of upside is fixed on intermediate member 17.Other structures are identical with blast device 1 except shape difference.The explanation of blast device 1 is applicable to the explanation of blast device 1a.Below, the symbol identical to the constituting component mark identical with blast device 1.
Figure 13 is the stereogram of the intermediate member 17 observed from oblique upper.Figure 14 is the plan view of intermediate member 17.Intermediate member 17 comprises the annulus 171 that surrounds central axis J1.The upper end of the outer edge of intermediate member 17 is connected with the lower end of upper outer cover 11.The lower end of the outer edge of intermediate member 17 is connected with the upper end of main body outer cover 12.Central part 172 as the inside line of annulus 171 is roughly tabular.Lower surface at central part 172 is provided with recess, at described recess, bearing cage 323 is installed.Be provided with the through hole 173 inserting for axle 311 in the central authorities of central part 172.
Annulus 171 is positioned at the below of the outer edge 154 of impeller 15a.Be provided with the steering channel 174 of depression downward at annulus 171.Steering channel 174 is along circumferentially extending and being present in annulus 171 complete cycles.The lower end of the outer edge 154 of upper impeller 15a is positioned at steering channel 174.Annulus 171 has two injection wells 175 of up/down perforation intermediate member 17 in steering channel 174.In addition, in Figure 13, observe intermediate member 17 from the direction that does not observe injection well 175.The cross section of steering channel 174 both can be U-shaped, also can be V word shape, can also be square.
Figure 15 is the longitudinal section that the barrel surface of utilization centered by central axis J1 dissectd the injection well 175 obtaining.Injection well 175 is along with the sense of rotation inclination of impeller 15a downward and upwards.By the air from upper impeller 15a, the tubular space 71 between motor part 16 and main body outer cover 12 guides injection well 175.Thus, prevented from directly entering air flow path 713 from the air of upper impeller 15a, thereby reduced noise.Steering channel 174 also guides the air rectification from upper impeller 15a efficiently to injection well 175.Also can improve the static pressure of blast device 1a by the rectified action of injection well 175.
The same with the blast device 1 of Fig. 3, because injection well 175 is positioned at the below of upper impeller 15a, therefore realize diametrically by blast device 1a miniaturization.And, tilt by injection well 175, can further improve the static pressure of blast device 1a.In addition, in blast device 1a, even in the situation that air flow path 173 is not set, also can realizes and reduce noises by intermediate member 17.The quantity of injection well 175 also can be more than two.
The also not complete cycle setting of the steering channel 174 of annulus 171.In this case, the lower end of the outer edge 154 of blade 152 is not positioned at steering channel 174.Therefore the footpath part upwards of only having that, also can outer edge 154 is positioned at the top of steering channel 174.Preferably steering channel 174 is positioned at the below of the periphery of impeller 15a.Injection well 175 is positioned at steering channel 174.
Blast device 1,1a can carry out various distortion.
For example, the shape of upper impeller 15a and lower impeller 15b also can suitably change.The outer edge 154 of blade 152 can be not outstanding downwards yet.The shape of upper impeller 15a and lower impeller 15b needn't be identical.In blast device 1,1a, also can omit lower impeller 15b or lower impeller 15b and diffuser 13, and impeller 15a is only set.
Motor part 16 also can be external rotor type motor.But in the case of considering the cooling effectiveness of motor part 16, preferably motor part 16 is the inner-rotor type motor that rotor magnet 313 is positioned at the inner side of stator 322.
Guide blades 122 also can be arranged at motor part 16 sides.Guide blades 132 also can be arranged at circuit board 324 sides.Air flow path 713 and lower air flow path 73 are not defined as the stream that space is separated by blade.For example, also main body outer cover 12 can be thickened, using the hole that longitudinally connects main body outer cover 12 as air flow path.Lower air flow path 73 too.And, the plate of the fixing straight line shape of thickness also can be set as guide blades 122,132.
Motor housing 321 also can form by resin.And, also can utilize resin that the periphery of metal housing is covered partly.By a part for the periphery of motor housing 321 being utilized resin form, also can be one-body molded with guide blades 122 and cylindrical part 121.
Utilize the gas that blast device 1,1a blow not to be defined as air.Therefore, usually, " air flow path 713 " and " lower air flow path 73 " can be called to " gas flow path 713 " and " lower gas flow path 73 ".And blast device 1,1a are not limited to and are used in vacuum cleaner, the device that it is applicable to attraction or Exhaust Gas and requires high static pressure.
Structure in above-mentioned mode of execution and each variation can be carried out appropriately combined as long as mutually do not produce contradiction.
The related blast device of the utility model is specially adapted to the blast device of vacuum cleaner, but blast device also can be used for other devices.Particularly be applicable to require to attract or the device of Exhaust Gas under the state of high static pressure.
Claims (17)
1. a blast device, described blast device comprises:
Motor part, the central axis of described motor part is towards above-below direction;
Impeller, described impeller is positioned at the top of described motor part, and is connected with the rotary part of described motor part, air-breathing from top by rotation, and radius vector is to foreign side or radially foreign side and below Exhaust Gas;
Upper outer cover, described upper outer cover has the inner peripheral surface that covers the periphery of described impeller and the top of outer edge, and has intakeport in central authorities; And
Main body outer cover, described main body outer cover covers the periphery of described motor part, and and described motor part between form tubular space,
Described tubular space comprises:
The first tubular space, described the first tubular space is positioned at the below of the underpart of the outer edge of described impeller; And
The second tubular space, described the second tubular space is positioned at the below in described the first tubular space, and has the multiple gas flow paths along circumferential array,
Described blast device is characterised in that,
The stream entrance of described multiple gas flow paths is positioned at than the imaginary elongation line that the internal diameter lower end of described intakeport is connected with the periphery underpart of described impeller position on the lower.
2. blast device according to claim 1, is characterized in that,
The external diameter of described impeller is less than the external diameter in described tubular space.
3. blast device according to claim 1, is characterized in that,
Described multiple gas flow path is towards peripheral, oblique, and with respect to the stream entrance of described gas flow path, flowing path outlet is positioned at the sense of rotation front of described impeller.
4. according to the blast device described in any one in claims 1 to 3, it is characterized in that,
Described blast device also has lower annulus, and described lower annulus is positioned at the below of described motor part, vertical with described central axis and in the form of a ring,
There is gas flow path extend towards inside side, footpath from the lower end of described multiple gas flow paths multiple at the spatial placement between described motor part and described lower annulus.
5. blast device according to claim 4, is characterized in that,
The end face of described multiple lower gas flow paths is the lower surface of the circuit board of described motor part.
6. blast device according to claim 4, is characterized in that,
Described blast device also has another impeller, and described another impeller is positioned at the below of described lower annulus and is connected with described rotary part.
7. according to the blast device described in any one in claims 1 to 3, it is characterized in that,
The outer circumferential face of the metal housing that the inner side surface that forms the described tubular space between described motor part and described main body outer cover is described motor part or keep the outer circumferential face of the metal holding part of the periphery of described motor part.
8. a blast device, described blast device comprises:
Motor part, the central axis of described motor part is towards above-below direction;
Impeller, described impeller is positioned at the top of described motor part, and is connected with the rotary part of described motor part, air-breathing from top by rotation, and radius vector is to foreign side or radially foreign side and below Exhaust Gas;
Upper outer cover, described upper outside covering covered the periphery of described impeller and the top of outer edge, and has intakeport in central authorities;
Main body outer cover, described main body outer cover covers the periphery of described motor part; And
Intermediate member, described intermediate member is presented axially between described impeller and described motor part, and comprises the annulus that surrounds described central axis,
Described annulus is positioned at the described outer edge of described impeller or the below of described periphery, and has depression and the steering channel along circumferential extension downward,
Described blast device is characterised in that,
Described annulus has multiple injection wells in described steering channel, and described multiple injection wells are by the tubular space guiding to from the gas of described impeller between described motor part and described main body outer cover.
9. blast device according to claim 8, is characterized in that,
Described multiple injection well is along with tilting to the sense of rotation of described impeller downward.
10. blast device according to claim 8, is characterized in that,
Described steering channel is present in described annulus complete cycle, and the lower end of the described outer edge of described impeller is positioned at described steering channel.
11. blast devices according to claim 8, is characterized in that,
Described blast device also has multiple gas flow paths, the space of described multiple gas flow paths between described motor part and described main body outer cover, and along circumferential array.
12. blast devices according to claim 11, is characterized in that,
Described multiple gas flow path is towards peripheral, oblique, and with respect to the stream entrance of described gas flow path, flowing path outlet is positioned at the sense of rotation front of described impeller.
Blast device in 13. according to Claim 8 to 12 described in any one, is characterized in that,
Described blast device also has lower annulus, and described lower annulus is positioned at the below of described motor part, vertical with described central axis and in the form of a ring,
Be formed with gas flow path extend towards inside side, footpath from the lower end of described multiple gas flow paths multiple in the space between described motor part and described lower annulus.
14. blast devices according to claim 13, is characterized in that,
The end face of described multiple lower gas flow paths is the lower surface of the circuit board of described motor part.
15. blast devices according to claim 13, is characterized in that,
Described blast device also has another impeller, and described another impeller is positioned at the below of described lower annulus, and is connected with described rotary part.
Blast device in 16. according to Claim 8 to 12 described in any one, is characterized in that,
The outer circumferential face of the metal housing that the inner side surface that forms the described tubular space between described motor part and described main body outer cover is described motor part or keep the outer circumferential face of the metal holding part of the periphery of described motor part.
17. 1 kinds of vacuum cleaner, is characterized in that, comprising:
Blast device in claim 1 to 16 described in any one; And
The suction tube that stream is connected with the described intakeport of described upper outer cover.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013165721A JP6585873B2 (en) | 2013-08-09 | 2013-08-09 | Blower and vacuum cleaner |
| JP2013-165721 | 2013-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743072U true CN203743072U (en) | 2014-07-30 |
Family
ID=51342879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420125829.XU Expired - Lifetime CN203743072U (en) | 2013-08-09 | 2014-03-19 | Air supply device and dust collector |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6585873B2 (en) |
| CN (1) | CN203743072U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107614888A (en) * | 2015-05-29 | 2018-01-19 | 日本电产株式会社 | Air-supply arrangement and dust catcher |
| CN108291555A (en) * | 2015-11-09 | 2018-07-17 | 日本电产株式会社 | Air-supply arrangement and dust catcher |
| CN113757145A (en) * | 2021-09-14 | 2021-12-07 | 杭州贝丰科技有限公司 | Fan blower |
| CN114321017A (en) * | 2019-02-28 | 2022-04-12 | 日本电产株式会社 | Air supply device and dust collector |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3015713A1 (en) | 2014-10-30 | 2016-05-04 | Nidec Corporation | Blower apparatus |
| CN108350899B (en) * | 2015-11-09 | 2020-06-30 | 日本电产株式会社 | Air supply device and dust collector |
| WO2017171495A1 (en) | 2016-03-31 | 2017-10-05 | 엘지전자 주식회사 | Cleaning apparatus |
| WO2017171499A1 (en) * | 2016-03-31 | 2017-10-05 | 엘지전자 주식회사 | Cleaning apparatus |
| KR102560970B1 (en) | 2016-03-31 | 2023-07-31 | 엘지전자 주식회사 | Cleaner |
| US11166607B2 (en) | 2016-03-31 | 2021-11-09 | Lg Electronics Inc. | Cleaner |
| US10646082B2 (en) | 2016-03-31 | 2020-05-12 | Lg Electronics Inc. | Cleaner |
| EP3892178B1 (en) | 2016-03-31 | 2023-05-03 | LG Electronics Inc. | Cleaning apparatus |
| JP6718365B2 (en) * | 2016-11-21 | 2020-07-08 | 東芝ライフスタイル株式会社 | Electric blower and vacuum cleaner |
| JP2022100054A (en) * | 2020-12-23 | 2022-07-05 | 株式会社マキタ | Air blower |
| US11802573B2 (en) | 2020-12-23 | 2023-10-31 | Makita Corporation | Blower |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5666099U (en) * | 1980-09-03 | 1981-06-02 | ||
| JPH11125198A (en) * | 1997-10-22 | 1999-05-11 | Matsushita Electric Ind Co Ltd | Motor-driven blower |
| JP2002310098A (en) * | 2001-04-10 | 2002-10-23 | Matsushita Electric Ind Co Ltd | Electric blower and vacuum cleaner using the same |
| JP5468747B2 (en) * | 2007-06-05 | 2014-04-09 | レスメド・モーター・テクノロジーズ・インコーポレーテッド | Blower with bearing tube |
| JP5195488B2 (en) * | 2009-02-10 | 2013-05-08 | パナソニック株式会社 | Electric blower and electric vacuum cleaner using the same |
| JP2011080427A (en) * | 2009-10-08 | 2011-04-21 | Panasonic Corp | Electric blower and vacuum cleaner using the same |
-
2013
- 2013-08-09 JP JP2013165721A patent/JP6585873B2/en not_active Expired - Fee Related
-
2014
- 2014-03-19 CN CN201420125829.XU patent/CN203743072U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107614888A (en) * | 2015-05-29 | 2018-01-19 | 日本电产株式会社 | Air-supply arrangement and dust catcher |
| CN107614888B (en) * | 2015-05-29 | 2019-08-06 | 日本电产株式会社 | Air supply device and dust catcher |
| CN108291555A (en) * | 2015-11-09 | 2018-07-17 | 日本电产株式会社 | Air-supply arrangement and dust catcher |
| CN114321017A (en) * | 2019-02-28 | 2022-04-12 | 日本电产株式会社 | Air supply device and dust collector |
| CN113757145A (en) * | 2021-09-14 | 2021-12-07 | 杭州贝丰科技有限公司 | Fan blower |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6585873B2 (en) | 2019-10-02 |
| JP2015034514A (en) | 2015-02-19 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
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| CX01 | Expiry of patent term |