CN205458418U - Portable whirlwind dust extraction - Google Patents
Portable whirlwind dust extraction Download PDFInfo
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- CN205458418U CN205458418U CN201620127606.6U CN201620127606U CN205458418U CN 205458418 U CN205458418 U CN 205458418U CN 201620127606 U CN201620127606 U CN 201620127606U CN 205458418 U CN205458418 U CN 205458418U
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- floor mop
- dirt cup
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- machine body
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Abstract
The utility model discloses a portable whirlwind dust extraction, including the host computer body, the dust absorption mop, the host computer is equipped with the handle on one's body, the dirt cup, the fuselage air -supply line, air intake motor, the dust absorption mop includes the mop base member, peg graft and manage, the interior wind channel of pipe lower extreme and the mop of pegging graft intercommunication, peg graft and manage upper end and fuselage air -supply line joint and intercommunication, be equipped with filter screening drum in the dirt cup, be equipped with the tangential air intake on the dirt cup, the upper end air exit, filter screening drum is last to be equipped with a plurality of filtration pores of crossing, tangential air intake and fuselage air -supply line intercommunication, the upper end air exit communicates with air intake motor's air inlet end, air intake motor's air -out is held and is established at host computer outer air exit intercommunication on one's body. The beneficial effects of the utility model are that: can handheldly operate, the clearance process is laborsaving fast, the wind channel is rational in infrastructure, can effectively accomplish the separation and the collection of dust, dust removal ability is strong, and the filter effect is good, can ensure the cleanliness of airing exhaust.
Description
Technical field
This utility model belongs to cleaner technology field, particularly relates to a kind of portable whirlwind dust exhaust apparatus.
Background technology
Along with development and the growth in the living standard in epoch, the vacuum cleaner of dust collection equipment especially domestic is
Obtain relatively broad application.Vacuum cleaner is that one utilizes motor (induced-draught electric motor), at the shell sealed
Internal generation air negative pressure, sucks dust or the electrical equipment of rubbish.Current vacuum cleaner, major function is exactly
Carry out reclaiming cleaning to the dust on floor, carpet etc., rubbish in family.But current vacuum cleaner,
Simple operation during use, and the separation energy of reasonability, dust and the air arranged in internal air channel
The aspects such as power, have been short of.
Utility model content
This utility model is to overcome deficiency of the prior art, it is provided that a kind of rational in infrastructure, can be with hands
Holding operation, scale removal process is convenient and strength-saving, can efficiently accomplish the functions such as a point dust suction, separation, air draft, dust suction
Strong with separating power, there is the dust exhaust apparatus of good filter effect.
To achieve these goals, this utility model is by the following technical solutions:
A kind of portable whirlwind dust exhaust apparatus, including main machine body, dust suction floor mop, described main machine body is provided with hands
Handle, dirt cup, fuselage blast pipe, be provided with induced-draught electric motor in main machine body, dust suction floor mop include floor mop matrix,
Being located at the insertion pipe on floor mop matrix, floor mop matrix is provided with air channel in floor mop, insertion pipe lower end and floor mop
Interior air channel connects, insertion pipe upper end and fuselage blast pipe clamping and connect, and is provided with filtering net cylinder in dirt cup,
Dirt cup is provided with tangent air inlet, upper end exhaust outlet, and filtering net cylinder is by tangent air inlet and upper end exhaust outlet
Separating, filtering net cylinder is provided with multiple filtering holes, and tangent air inlet connects with fuselage blast pipe, and upper end is arranged
Air port connects with the air intake of induced-draught electric motor, the outlet air end of induced-draught electric motor and the outer air draft being located in main machine body
Mouth connection.
As preferably, described handle includes grab handle, grips pipe, grips pipe upper end and connects grab handle, main
Fuselage is provided with catheter connection, grips pipe lower end and inserts in catheter connection, grip pipe and main machine body it
Between fixed by shank body buckle.
As preferably, described tangent air inlet is connected with fuselage blast pipe by cup intake air way, and cup enters
Air intake direction is dirt cup body one of air channel is tangential.
As preferably, being provided with dirt bag frame in described filtering net cylinder, dirt bag frame was provided with bag dust filter, filtered
Filtering net cylinder is separated by dirt bag with upper end exhaust outlet.
As preferably, described dirt cup and main machine body clamping, main machine body be provided with for fix dirt cup perpendicular by
Button, main machine body is provided with buckle shaft, erects the spring of snap-fastener for outwards top pressure, and perpendicular snap-fastener rotates even with buckle shaft
Connecing, be connected with spring one end inside perpendicular snap-fastener upper end, the spring other end withstands main machine body, perpendicular snap-fastener lower end
Dirt cup is pushed down in inner side, and buckle shaft is between perpendicular snap-fastener upper end and perpendicular snap-fastener lower end.
As preferably, at the exhaust outlet of described upper end, it is provided with filtration support body, filters support body and be provided with air intake sponge.
As preferably, described floor mop matrix is provided with some rear land wheels, land wheel, floor mop base before at least one
It is provided with bottom body and is directly sucked in mouth, be directly sucked in the air intake direction of mouth upwards, air channel and directly suction in floor mop
Entrance connects, and floor mop matrix is provided with the hairbrush bar for brushing ground, and hairbrush bar is in and is directly sucked in a mouthful front.
As preferably, described floor mop matrix is provided with some dampings regulation cylinder, and damping regulation cylinder includes damping
The regulating piston that cylinder body and damping cylinder are slidably matched, regulating piston is provided with outer piston bar, outer piston
Bar the inner connects regulating piston, and outer piston bar outer end, towards the direction of advance of movable pulley, is filled in damping cylinder
Hydraulic oil, outer piston bar outer end is had to be provided with Elastic Contact bulb, in damping cylinder, be provided with back-moving spring, multiple
Position spring one end connects regulating piston, and the back-moving spring other end connects damping cylinder, and regulating piston is in multiple
Between position spring and outer piston bar.
As preferably, described floor mop matrix is delayed base, floor mop front shroud with including, top, floor mop front shroud rear end
Hinged with ground base of delaying, front land wheel, hairbrush bar are all in floor mop front shroud, are provided with hairbrush in floor mop front shroud
Frame, hairbrush bar includes swipe base, brush ground bar, and swipe base is slidably connected with brush holder, and glide direction is upper
Lower direction, brush holder is provided with for preventing hairbrush bar from departing from the swipe limiting plate of brush holder, swipe Ji Ding
Portion is provided with balancing weight, and ground base of delaying is provided with pulley vertical rod, and pulley vertical rod is provided with and pulley vertical rod rotates
The outer auxiliary pulley connected, also includes that one pulls rope, pulls rope to delay with passing the roof of base, pulls rope
Coordinate with outer auxiliary pulley and contact, also include a hydraulic pressure pull cylinder, hydraulic pressure pull cylinder include pulling cylinder body,
With the drive piston pulling cylinder body to be slidably matched, drive piston to be provided with and pull piston rod, pull cylinder body with
Connected by oil pipe between damping cylinder, pull piston rod the inner to be connected with drive piston, pull piston rod
Outer end is connected with the one end pulling rope, pulls the other end of rope to be connected with the roof of floor mop front shroud, and oil pipe is
One flexible pipe.
The beneficial effects of the utility model are: permit handheld operation, scale removal process fast power-saving；Air channel structure
Rationally, separation and the collection of dust can be efficiently accomplished；Dust removal ability is strong, and filter effect is good, can ensure
The cleannes of air draft；There is floor mop Anti-bumping protection function, be also equipped with the high-efficiency cleaning for dead angles such as the foot of a wall
Ability, complete function；Stability in the large is good, and noise is little.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the enlarged drawing in Fig. 1 at A；
Fig. 3 is the enlarged drawing in Fig. 1 at B；
Fig. 4 is the exploded perspective view at this utility model dirt cup；
Fig. 5 is the structural representation of dust suction floor mop in this utility model embodiment 2；
Fig. 6 is the structural representation in this utility model embodiment 2 under one duty of dust suction floor mop；
Fig. 7 is damping cylinder in this utility model embodiment 2, pulls the oil circuit at cylinder body and structural representation
Figure；
Fig. 8 is the structural representation in this utility model embodiment 2 at brush holder.
In figure: main machine body 1, fuselage blast pipe 11, induced-draught electric motor 12, perpendicular snap-fastener 13, buckle shaft 131,
Air channel 22 in spring 132, dust suction floor mop 2, insertion pipe 21, floor mop, rear land wheel 23, front land wheel 24,
It is directly sucked in mouth 25, hairbrush bar 261, swipe base 2611, brush ground bar 2612, brush holder 262, swipe
Limiting plate 263, balancing weight 264, damping regulation cylinder 27, damping cylinder 271, outer piston bar 272, bullet
Property contact bulb 273, pulley vertical rod 28, outer auxiliary pulley 281, hydraulic pressure pull cylinder 29, pull cylinder body
291, pull piston rod 292, the base 2a that delays, floor mop front shroud 2b, pull rope 2c, oil pipe 2d, interior
Auxiliary pulley 2e, handle 3, grab handle 31, grip pipe 32, catheter connection 33, shank body buckle 34,
Dirt cup 4, filtering net cylinder 41, dirt bag frame 42.
Detailed description of the invention
With detailed description of the invention, this utility model is further described below in conjunction with the accompanying drawings.
Embodiment 1: in embodiment as shown in Figures 1 to 4, a kind of portable whirlwind dust exhaust apparatus, bag
Including main machine body 1, dust suction floor mop 2, described main machine body is provided with handle 3, dirt cup 4, fuselage blast pipe 11,
Being provided with induced-draught electric motor 12 in main machine body, dust suction floor mop includes floor mop matrix, the grafting being located on floor mop matrix
Pipe 21, floor mop matrix is provided with air channel 22 in floor mop, and insertion pipe lower end connects with air channel in floor mop, grafting
Pipe upper end and fuselage blast pipe clamping and connect, be provided with filtering net cylinder 41 in dirt cup, dirt cup is provided with tangentially
Air inlet, upper end exhaust outlet, tangent air inlet is separated by filtering net cylinder with upper end exhaust outlet, filtering net cylinder
Being provided with multiple filtering holes, tangent air inlet connects with fuselage blast pipe, upper end exhaust outlet and induced-draught electric motor
Air intake connection, the outlet air end of induced-draught electric motor connects with the outer exhaust outlet being located in main machine body.Described hands
Handle includes grab handle 31, grips pipe 32, grips pipe upper end and connects grab handle, and main machine body is provided with and intubates even
Fitting 33, grips pipe lower end and inserts in catheter connection, grip between pipe and main machine body by shank body buckle
34 fix.Described tangent air inlet is connected with fuselage blast pipe by cup intake air way, cup intake air way
Air intake direction be one of dirt cup body tangential.It is provided with dirt bag frame 42 in described filtering net cylinder, dirt bag frame sets
There is bag dust filter, and crossed bag dust filter and filtering net cylinder is separated with upper end exhaust outlet.
Air (with dust impurity) is after floor mop sucks, from tangent air inlet with tangential or approximation is tangential
Direction enter in dirt cup, and in dirt cup, form eddy flow, relatively heavy dust impurity is adherent, subsequently
Owing to gravity gradually falls, it is interior subsequently through on dirt bag frame that air draught then enters dirt cup by each filtering holes
Cross bag dust filter (being equivalent to fine straining), separated further and purified, can enter subsequently induced-draught electric motor,
It is ultimately drained into the external world.In the process, first pass through the filtration of cyclonic separation and filtering net cylinder, pass through again
The filtration of bag dust filter, the thickest rear essence, the filter effect of dust impurity is obvious.Grab handle, gripping Guan Douke
To grip, facilitate user directly to carry this complete machine and carry out cleaning operation, greatly improve simple operation
And work efficiency.Wherein grip between Guan Yuyu main machine body and fixed by shank body buckle, it is simple to dismount, tie up
Repair, change.
Described dirt cup and main machine body clamping, main machine body is provided with the perpendicular snap-fastener 13 for fixing dirt cup, main frame
Being provided with buckle shaft 131 with it, erect the spring 132 of snap-fastener for outwards top pressure, perpendicular snap-fastener is rotationally connected with buckle shaft,
Being connected with spring one end inside perpendicular snap-fastener upper end, the spring other end withstands main machine body, perpendicular snap-fastener lower end inside
Pushing down dirt cup, buckle shaft is between perpendicular snap-fastener upper end and perpendicular snap-fastener lower end.Dirt cup is detachable with main machine body,
When needing to unload dirt cup, pinning perpendicular snap-fastener upper end, make spring contraction, dirt cup is left, i.e. in perpendicular snap-fastener lower end
Dirt cup can be unloaded carry out the toppling over of rubbish (dust impurity etc.) in cup, clear up.When reinstalling dirt cup, pin
Perpendicular snap-fastener upper end, makes spring contraction, allows dirt cup dropping place, then decontrols perpendicular snap-fastener upper end, in spring effect
Under, dirt cup is pushed down in perpendicular snap-fastener lower end, completes to fix.
It is provided with filtration support body at the exhaust outlet of described upper end, filters support body and be provided with air intake sponge.Can arrange
Filter support body and air intake sponge, allow air be filtered once again before entering induced-draught electric motor, simultaneously can also
Sponge the moisture in humid air, ensure the clean-up performance of final air draft further, and air draught can be protected
Motor.
Embodiment 2: the basic structure of the present embodiment and embodiment are with embodiment 1, and its difference is,
As shown in Fig. 5 to Fig. 8, described floor mop matrix is provided with some rear land wheels 23, land wheel before at least one
24, floor mop base bottom is provided with and is directly sucked in mouth 25, is directly sucked in the air intake direction of mouth upwards, in floor mop
Air channel connects with being directly sucked in mouth, and floor mop matrix is provided with the hairbrush bar 261 for brushing ground, at hairbrush bar
It is being directly sucked in a mouthful front.Rear land wheel, front land wheel facilitate floor mop in cleaning surface (floor, carpet etc.)
Upper movement, is directly sucked in the position that mouth is exactly initial dust suction.Hairbrush bar then can have been brushed on cleaning surface
Impurity, improves the cleaning effect to cleaning surface (floor, ground, carpet etc.).
Described floor mop matrix be provided with some dampings regulation cylinder 27, damping regulation cylinder include damping cylinder 271,
The regulating piston being slidably matched with damping cylinder, regulating piston is provided with outer piston bar 272, outer piston bar
Inner connection regulating piston, outer piston bar outer end is towards the direction of advance of movable pulley, and damper cylinder is filled with
Hydraulic oil, outer piston bar outer end is provided with Elastic Contact bulb 273, is provided with back-moving spring in damping cylinder,
Back-moving spring one end connects regulating piston, and the back-moving spring other end connects damping cylinder, and regulating piston is in
Between back-moving spring and outer piston bar.User holds handle, promote dust suction floor mop to ground (or other
Cleaning surface) when clearing up, when being cleaned to wall limit or near cupboard etc., if imprudence promote away from
From excessive, may result in dust suction floor mop and bump against metope, cupboard etc., cause metope, cupboard or dust suction
The damage of floor mop itself.And in the present embodiment, before dust suction floor mop advances, will strike metope,
Elastic Contact bulb can touch metope in advance, and outer piston bar stress inside contracts, and plays damping, collision-damage-prevention
Effect.Although there is no back-moving spring, regulating piston also can automatically reset (when regulating piston moves, liquid
Force feed can not be compressed, but in cylinder, air can compress or expand, and after external force eliminates, has at air pressurized
Outside thrust, has a negative-pressure sucking at air expansion, all can driving structure reset), but had reset bullet
Spring, can help regulating piston to reset after Elastic Contact bulb leaves the object of contact, and lifting restoring is imitated
Really.
Described floor mop matrix is delayed base 2a, floor mop front shroud 2b with including, top, floor mop front shroud rear end and floor mop
Rear base is hinged, and front land wheel, hairbrush bar are all in floor mop front shroud, are provided with brush holder 262 in floor mop front shroud,
Hairbrush bar includes swipe base 2611, brush ground bar 2612, and swipe base is slidably connected with brush holder, glide direction
For above-below direction, brush holder is provided with for preventing hairbrush bar from departing from the swipe limiting plate 263 of brush holder,
Swipe base top is provided with balancing weight 264, and ground base of delaying is provided with pulley vertical rod 28, and pulley vertical rod is provided with
The outer auxiliary pulley 281 being rotationally connected with pulley vertical rod, also includes that one pulls rope 2c, pulls rope to pass ground
Delay the roof of base, pull rope to coordinate with outer auxiliary pulley and contact, also include that a hydraulic pressure pulls cylinder 29, liquid
Pressure pulls the drive piston that cylinder includes pulling cylinder body 291 and pulls cylinder body and be slidably matched, and drives on piston
It is provided with and pulls piston rod 292, pull and connected by oil pipe 2d between cylinder body with damping cylinder, pull piston
Bar is inner to be connected with driving piston, pulls piston rod outer end and is connected with the one end pulling rope, pulls the another of rope
One end is connected with the roof of floor mop front shroud, and oil pipe is a flexible pipe.Oil pipe can be metal bellows, plastic cement
Pipes etc. can be with diastrophic flexible pipe.Between body of wall and ground, belong to the " dead of the more difficult cleaning of dust suction floor mop
Angle " because dust suction floor mop first has to utilize hairbrush bar to clean with water, then recycling negative pressure carry out dust suction,
Gettering, but due to the existence of hairbrush bar, have impact on the distance being directly sucked between mouth and the foot of a wall, easily
Cause the suction to wall edge not enough.Further, external shell structure in front end (is ground in the present embodiment
Drag front shroud) existence, also can strengthen the distance being directly sucked between mouth and the foot of a wall, these all be unfavorable for inhale
Dirt floor mop carries out dust suction to the corner between body of wall and ground.And in the present embodiment, when dust suction floor mop leans on
After nearly body of wall, Elastic Contact bulb contact body of wall, under the effect of thrust, outer piston bar pressurized, hydraulic pressure
Oil flows to pull cylinder body from damping cylinder, thus pulls piston rod pushed outwards to move, starts to stretch out, and pulls
Piston rod, with pulling Suo Yidong, pulls Suo Ladong floor mop front shroud (to pull the other end and the floor mop front shroud of rope
Roof connect) upwards dig (Fig. 6 is the schematic diagram after turning on floor mop front shroud), floor mop front shroud is along hinge
Contact starts to rotate.Dust suction floor mop the closer to body of wall, is then crossed many (additionally, for side on floor mop front shroud
Just pull the setting of rope, several interior auxiliary pulley 2e can be set again at main case more, allow and pull rope also to walk around
Interior auxiliary pulley, i.e. coordinates with interior auxiliary pulley and contacts, to avoid pulling rope and other constructive interference).And
And, floor mop front shroud turns over, as long as translating on floor mop front shroud without being designed to need to pull rope to drive all the time
After certain angle, body of wall will contact front land wheel in fact, if now dust suction floor mop continues near body of wall, then
Under " promotion " of body of wall floor mop front shroud also can continue on turn over, so, both ensure that at ordinary times
Drag the normal use of front shroud, also make when needs are to when carrying out dust suction at the foot of a wall, floor mop front shroud can dig,
Dodge, allow and be directly sucked in the most close position (the foot of a wall) needing dust suction of mouth, substantially increase and the foot of a wall is waited for death
The cleaning effect at angle.Furthermore, floor mop front shroud is during upper turning over, at balancing weight and hairbrush bar self gravitation
Effect under, hairbrush bar can slide downward stretch out, such that it is able to compensate floor mop front shroud hairbrush bar when digging
Road clearance, ensure and promote the cleaning effect at nearly the foot of a wall, at the foot of a wall further.And dust suction drag away from
When opening at the foot of a wall, foundation, due to gravity, floor mop front shroud can automatically reset, and user can also be quick
Post-tensioning dust suction floor mop once, under effect of inertia, floor mop front shroud also can reset smoothly.In addition it is also possible to
Utilize spring or manually reset.
Claims (6)
1. a portable whirlwind dust exhaust apparatus, including main machine body, dust suction floor mop, is characterized in that, in described main machine body
Being provided with handle, dirt cup, fuselage blast pipe, be provided with induced-draught electric motor in main machine body, dust suction floor mop includes floor mop
Matrix, the insertion pipe being located on floor mop matrix, floor mop matrix is provided with air channel in floor mop, insertion pipe lower end
Connect with air channel in floor mop, insertion pipe upper end and fuselage blast pipe clamping and connect, in dirt cup, be provided with filtration
Net cylinder, dirt cup is provided with tangent air inlet, upper end exhaust outlet, and filtering net cylinder is by tangent air inlet and upper end
Exhaust outlet separates, and filtering net cylinder is provided with multiple filtering holes, and tangent air inlet connects with fuselage blast pipe,
Upper end exhaust outlet connects with the air intake of induced-draught electric motor, the outlet air end of induced-draught electric motor be located in main machine body
Outer exhaust outlet connects.
One the most according to claim 1 portable whirlwind dust exhaust apparatus, is characterized in that, described handle includes holding
Holding handle, grip pipe, grip pipe upper end and connect grab handle, main machine body is provided with catheter connection, grips pipe
Lower end is inserted in catheter connection, grips and is fixed by shank body buckle between pipe and main machine body.
One the most according to claim 1 portable whirlwind dust exhaust apparatus, is characterized in that, described tangent air inlet
Connected with fuselage blast pipe by cup intake air way, air intake direction is dirt cup body of cup intake air way
Tangentially.
4., according to the one portable whirlwind dust exhaust apparatus described in claim 1 or 2 or 3, it is characterized in that, described mistake
Being provided with dirt bag frame in screen tube, dirt bag frame was provided with bag dust filter, crossed bag dust filter by filtering net cylinder and upper end
Exhaust outlet separates.
One the most according to claim 1 portable whirlwind dust exhaust apparatus, is characterized in that, described dirt cup and main frame
Body clamping, main machine body is provided with the perpendicular snap-fastener for fixing dirt cup, main machine body be provided with buckle shaft, for
The spring of the outer top perpendicular snap-fastener of pressure, perpendicular snap-fastener is rotationally connected with buckle shaft, erects inside snap-fastener upper end and spring one end
Connecting, the spring other end withstands main machine body, and perpendicular snap-fastener lower end inside pushes down dirt cup, and buckle shaft is in perpendicular snap-fastener
Between upper end and perpendicular snap-fastener lower end.
6., according to the one portable whirlwind dust exhaust apparatus described in claim 1 or 2 or 3, it is characterized in that, described on
It is provided with filtration support body at end exhaust outlet, filters support body and be provided with air intake sponge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620127606.6U CN205458418U (en) | 2016-02-18 | 2016-02-18 | Portable whirlwind dust extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620127606.6U CN205458418U (en) | 2016-02-18 | 2016-02-18 | Portable whirlwind dust extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205458418U true CN205458418U (en) | 2016-08-17 |
Family
ID=56677575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620127606.6U Active CN205458418U (en) | 2016-02-18 | 2016-02-18 | Portable whirlwind dust extraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205458418U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105662271A (en) * | 2016-02-18 | 2016-06-15 | 宁波海际电器有限公司 | Portable cyclone dust collector |
| CN107184148A (en) * | 2017-05-26 | 2017-09-22 | 珠海格力电器股份有限公司 | Dust catcher and its control method |
| WO2018103618A1 (en) * | 2016-12-06 | 2018-06-14 | 科沃斯机器人股份有限公司 | Hand-held vacuum cleaner |
-
2016
- 2016-02-18 CN CN201620127606.6U patent/CN205458418U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105662271A (en) * | 2016-02-18 | 2016-06-15 | 宁波海际电器有限公司 | Portable cyclone dust collector |
| CN105662271B (en) * | 2016-02-18 | 2017-11-10 | 宁波海际电器有限公司 | A kind of portable rotoclone collector |
| WO2018103618A1 (en) * | 2016-12-06 | 2018-06-14 | 科沃斯机器人股份有限公司 | Hand-held vacuum cleaner |
| CN107184148A (en) * | 2017-05-26 | 2017-09-22 | 珠海格力电器股份有限公司 | Dust catcher and its control method |
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| C14 | Grant of patent or utility model | ||
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