CN208839278U - Filter assemblies - Google Patents
Filter assemblies Download PDFInfo
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- CN208839278U CN208839278U CN201821411924.0U CN201821411924U CN208839278U CN 208839278 U CN208839278 U CN 208839278U CN 201821411924 U CN201821411924 U CN 201821411924U CN 208839278 U CN208839278 U CN 208839278U
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- filter assemblies
- filtering screen
- filter layer
- dust
- wind deflector
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Abstract
The utility model discloses a kind of filter assemblies, are arranged in dust catcher, and filter assemblies include: filtering screen, and for cylindrical shape, filtering screen is longitudinally disposed；Cyclone separator is co-axially located in filtering screen；Wind deflector unit is funnel type structure, which is co-axially located at the upper end of cyclone separator, and Open Side Down extends in cyclone separator for the tubular portion of the wind deflector unit；HEPA filter layer, is arranged in the upper end of wind deflector unit, HEPA filter layer with a thickness of 15mm~20mm；And dirt unit is led, to be horn-like, this leads the lower end that dirt unit is co-axially located at filtering screen, which is connected with the lower end of filtering screen upward.The filter assemblies of the utility model use coaxially arranged, compact-sized, compact, and improve filter effect using HEPA filter layer.
Description
Technical field
The utility model relates to cleaner field, in particular to a kind of filter assemblies.
Background technique
For hand-held cleaners, compact facilitates gripping to be always its advantage place.On the other hand, it is pursuing
Simultaneously, often filter effect is bad for existing hand-held cleaners for the advantage of small volume and less weight, influences usage experience.
Therefore, need one kind can reach good filter effect and filter assemblies, thus keep or add
Rival holds the advantage of dust catcher compact.
The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of filter assemblies, so as to improve the filter assemblies structure of existing dust catcher
The bad problem of dispersion, filter effect.
To achieve the above object, the utility model provides a kind of filter assemblies, is arranged in dust catcher, filter assemblies
It include: filtering screen, for cylindrical shape, filtering screen is longitudinally disposed；Cyclone separator is co-axially located in filtering screen；
Wind deflector unit, is funnel type structure, which is co-axially located at the upper end of cyclone separator, the tubulose of the wind deflector unit
Open Side Down in portion extends in cyclone separator；The upper end of wind deflector unit, the thickness of HEPA filter layer is arranged in HEPA filter layer
Degree is 15mm~20mm；And dirt unit is led, to be horn-like, this leads the lower end that dirt unit is co-axially located at filtering screen, should
The wide mouth part for leading dirt unit is connected with the lower end of filtering screen upward.
Further, in above-mentioned technical proposal, filter assemblies are co-axially located in the dust pocket of dust catcher, lead the narrow of dirt unit
Mouth end and the bottom surface of dust pocket are removably tightly connected.
Further, in above-mentioned technical proposal, the upper end of the taper portion of wind deflector unit is formed with filter layer cavity, HEPA filtering
Layer is arranged in the filter layer cavity.
Further, in above-mentioned technical proposal, filter layer cavity is columnar, the diameter phase of diameter and the upper end of taper portion
Together.
Further, in above-mentioned technical proposal, the top surface of HEPA filter layer to the height between the bottom surface of dust pocket is 120~
150mm。
Further, in above-mentioned technical proposal, the side wall upper part of dust pocket is equipped with air inlet, the end of the tubular portion of wind deflector unit
Face is not higher than the horizontal plane where the center of air inlet.
Further, in above-mentioned technical proposal, the distance between filtering screen and dust pocket are greater than or equal to 35mm.
Further, in above-mentioned technical proposal, the diameter of the tubular portion of wind deflector unit is 20~35mm.
Further, in above-mentioned technical proposal, wind deflector unit further includes at least one baffle, the baffle by tubular portion end face
Extend vertically downward.
Further, in above-mentioned technical proposal, baffle is arranged radially along the end face of tubular portion, and the quantity of baffle is two,
And it is mutually perpendicular to.
Compared with prior art, the utility model has the following beneficial effects:
1. filter assemblies use coaxially arranged, compact-sized, compact, and improve filtering using HEPA filter layer
Effect.
2. filter layer cavity is integrated in wind deflector unit, so that the more compact structure of filter assemblies, dusty gas is by tubulose
Portion enters taper portion, enables dusty gas uniformly across filter layer, improves filter efficiency.
3. the end face of the tubular portion of wind deflector unit is not higher than the horizontal plane where the center of the air inlet of dust pocket, so that collection
The power that the dust filtered out in dirt cup by filtering screen falls to the bottom of dust pocket is greater than upward suction, thus dust collecting effect
More preferably.
Stop 4. the baffle of wind deflector unit can be formed the dust in gas, so that dust granule is fallen, improve filtering
Efficiency.
Above description is only the general introduction of technical solutions of the utility model, in order to more clearly understand the utility model
Technological means can be simultaneously practiced according to the content of specification, while above and other purpose, skill in order to make the utility model
Art feature and advantage are more understandable, are exemplified below one or more preferred embodiments, and be described in detail with the accompanying drawings as follows.
Detailed description of the invention
Fig. 1 is the perspective exploded view of the dust pocket of an embodiment according to the present utility model.
Fig. 2 is the schematic side view of the dust pocket of an embodiment according to the present utility model.
Fig. 3 is the dust pocket of an embodiment according to the present utility model and the schematic cross-sectional view of filter assemblies assembly.
Fig. 4 is that the dust pocket of an embodiment according to the present utility model and another section view of filter assemblies assembly are illustrated
Figure.
Fig. 5 is the schematic side view of the filter assemblies of an embodiment according to the present utility model.
Fig. 6 is the schematic cross-sectional view of the filter assemblies of an embodiment according to the present utility model.
Fig. 7 is the schematic side view of the cyclone separator of an embodiment according to the present utility model.
Fig. 8 is another schematic side view of the cyclone separator of an embodiment according to the present utility model.
Fig. 9 is the schematic top plan view of the cyclone separator of an embodiment according to the present utility model.
Figure 10 is the stereoscopic schematic diagram of the cyclone separator of an embodiment according to the present utility model.
Figure 11 is the schematic cross-sectional view of the cyclone separator of an embodiment according to the present utility model.
Figure 12 is the schematic side view of the wind deflector unit of an embodiment according to the present utility model.
Figure 13 is the schematic top plan view of the wind deflector unit of an embodiment according to the present utility model.
Figure 14 is the stereoscopic schematic diagram of the wind deflector unit of an embodiment according to the present utility model.
Figure 15 is the schematic cross-sectional view of the wind deflector unit of an embodiment according to the present utility model.
Main appended drawing reference explanation:
10- dust pocket, 11- air inlet, 12- wind-guiding door, 121- upper hem, 122- lower hem, the department of assembly 123-, 124- spiral shell
Silk；
100- filter assemblies, 20- filtering screen, 21- top plate ring, 30- cyclone separator, the first disengagement chamber of 31-, the bottom 311-
Face, 312- wind blade, the section 312a-, the air duct 313-, 313a- tunnel inlet, 313b- ducting outlet, the second disengagement chamber of 32-,
The channel 321-, 33- air outlet, 34- dust-exhausting port, 35- separation cone, 351- trunk portion, 352- cone portion, 40- filter layer, 50- are led
Wind unit, 51- taper portion, 511- filter layer cavity, 52- tubular portion, 53- baffle, 60- lead dirt unit, 61- dust guiding tube, 62- gear
Dirt ring.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
Explicitly indicate that, otherwise in entire disclosure and claims, term " includes " or its change unless otherwise other
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other yuan
Part or other components.
Herein, for convenience of description, spatially relative term can be used, such as " following ", " lower section ", "lower",
" above ", " top ", "upper" etc., to describe an elements or features and the relationship of another elements or features in the accompanying drawings.Ying Li
Solution, spatially relative term are intended to comprising the not Tongfang of object in use or operation other than direction painted in figure
To.For example, the element for being described as be in other elements or feature " lower section " or "lower" will if the object in figure is reversed
Orientation is in " top " of elements or features.Therefore, exemplary term " lower section " may include following above and both direction.Object
There can also be other orientations (be rotated by 90 ° or other are orientated) and reply spatially relative term used herein makes corresponding solution
It releases.
Herein, term " first ", " second " etc. be distinguishing two different elements or position, be not to
Limit specific position or relativeness.In other words, in some embodiments, term " first ", " second " etc. can also be each other
It exchanges.
As shown in Figures 1 to 4, according to the dust pocket 10 of the dust catcher of specific embodiment of the present invention for collecting simultaneously
The dust granule for storing the filtering of filter assemblies 100 through dust catcher and isolating.Dust pocket 10 is the cylindric cup of sealed bottom
The side wall upper part of body, dust pocket 10 is equipped with air inlet 11.The filter assemblies 100 of dust catcher are removably co-axially located at dust pocket
In 10, the dust granule isolated through filter assemblies 100 is fallen into dust pocket 10.It is preferred that and not restrictive, dust pocket 10
Wind-guiding door 12 is equipped at air inlet 11, shape and the air inlet 11 of wind-guiding door 12 match.The side of wind-guiding door 12 is fixedly connected
On the wall surface of dust pocket 10, the other side is free end.When dusty gas blows to wind-guiding door 12, the free end meeting of wind-guiding door 12
It opens, so that dusty gas can enter dust pocket 10 from open crack between a door and its frame along the inner wall of dust pocket 10.Illustratively, wind-guiding
Door 12 can be fixedly connected on the wall surface of dust pocket 10 by department of assembly 123；Wind-guiding door 12 can connect by the way that screw 124 is fixed
It connects on the wall surface of dust pocket 10.It is to be understood that the utility model is not limited thereto, those skilled in the art can basis
The assembly method of actual needs selection wind-guiding door.
It is preferred that and not restrictive, in one or more illustrative embodiments of the utility model, wind-guiding door 12
Top and bottom are respectively equipped with upper hem 121 and lower hem 122, and upper hem 121 and lower hem 122 are vertical outward by wind-guiding door 12
Extend.Upper hem 121 and lower hem 122 can form guiding role to dusty gas, and dusty gas blows wind-guiding door 12 open, upwards
It is blocked with downward air-flow, dusty gas can only be along the tangential entrance of the inner wall of dust pocket 10.In turn, dusty gas is collecting
It is rotated in dirt cup 10, under the action of the centrifugal, biggish dust granule can be fallen in dusty gas, and dusty gas passes through pre-filtering.
Illustratively, the shape of upper hem 121 and lower hem 122 can for sector, it should be understood that be the utility model not as
Limit.
It is preferred that and not restrictive, wind-guiding door 12 can be made of rubber, it is preferable that wind-guiding door 12 can be by silica gel system
At.It is to be understood that those skilled in the art can according to need the material of selection wind-guiding door 12, which should have certain
Elasticity, when dusty gas blows to wind-guiding door 12, wind-guiding door 12 can be blown open, so that dusty gas is along dust pocket 10
Inner wall enters.It is preferred that and not restrictive, there are gaps between the free end of wind-guiding door 12 and the side wall of dust pocket 10.It is preferred that and
Without limitation, the free end of wind-guiding door 12 is equipped with chamfering (not shown).
Further, with reference to shown in Fig. 3 to Fig. 6, in one or more illustrative embodiments of the utility model, mistake
Filter component 100 includes filtering screen 20, cyclone separator 30, filter layer 40, wind deflector unit 50, leads dirt unit 60.Filtering screen
20 be cylinder-like structure, and multiple through-holes are placed on side wall.Filtering screen 20 is longitudinally disposed, axis vertical.Whirlwind
Separator 30 is co-axially located in filtering screen 20.30 upper end of cyclone separator is coaxially provided with wind deflector unit 50, wind deflector unit 50
For funnel type, tubular portion is opening down to be extended in cyclone separator 30, the upper end of cyclone separator 30 and wind deflector unit 50
Cone cell lower surface abut against.The upper end of wind deflector unit 50 is equipped with filter layer 40.The gas filtered through cyclone separator 30 exists
Under the suction of induced-draught electric motor (not shown), conduction is continued up to filter layer 40 by wind deflector unit 50.Filter layer
40 filter the gas passed through again, and the dust granule isolated falls into cyclone separator 30 along wind deflector unit 50, and from rotation
The dust-exhausting port of 30 lower end of wind separator is fallen.Filter layer 40 can be filter cotton, filter screen and/or HEPA filtration members, this is practical
It is novel to be not limited thereto.It is preferred that and not restrictive, it includes several in HEPA filter layer that filter layer 40, which is HEPA filter layer,
Therefore a fold compared with sponge filter layer, can increase the storage capacity of dust, and the filter effect of HEPA filter layer is excellent
In sponge filter layer.Illustratively, HEPA filter layer with a thickness of 15mm~20mm.Leading dirt unit 60 is horn-like, wide-mouth
End is connected with the lower end of filtering screen 20 upward.Illustratively, the bottom surface at the slot end and dust pocket 10 of leading dirt unit 60 can
It is releasably tightly connected, the inside for leading dirt unit 60 forms secondary dust-collecting cavity.Illustratively, filter layer 40 (HEPA filter layer)
Top surface to the height between the bottom surface of dust pocket 10 be 120~150mm, preferably 141.15mm.The all parts of filter assemblies
Using coaxial arrangement, so that the structure of filter assemblies is very compact, compact, and the damage to negative-pressure sucking can also be reduced
Consumption.
Further, with reference to shown in Fig. 7 to Figure 11, in one or more illustrative embodiments of the utility model,
Cyclone separator 30 is arranged on the filtering air duct of dust catcher, for being filtered to dusty gas.Cyclone separator 30 includes
Two disengagement chambers, i.e. the first disengagement chamber 31 and the second disengagement chamber 32.First disengagement chamber 31 has the bottom surface 311 of inverted cone shape and multiple
Wind blade 312.Wind blade 312 is the identical globoidal structure of size and shape, and equably spiral is set multiple wind blades 312
It sets on bottom surface 311, to form multiple air ducts 313, air outlet 33 is provided with the top of the first disengagement chamber 31.First disengagement chamber
31 relative axis have rotational symmetry.The outer end of wind blade 312 and the outer end of adjacent wind blade 312 form air duct and enter
The inner end of mouth 313a, the inner end of wind blade 312 and adjacent wind blade 312 forms ducting outlet 313b.Illustratively, wind
Road entrance 313a is greater than ducting outlet 313b.Example and not restrictive, between the outer end and filtering screen 20 of wind blade 312
Distance be more than or equal to 15mm, the distance between filtering screen 20 and dust pocket 10 are more than or equal to 35mm.Second disengagement chamber 32 with
The bottom end of first disengagement chamber 31 is connected, and the bottom surface of the second disengagement chamber 32 is the channel 321 of downward spiral, channel 321 and first
The bottom surface 311 of the inverted cone shape of disengagement chamber 31 is coaxial, and dust-exhausting port 34 is provided with the end of the helix-type channel 321 of the second disengagement chamber 32
End.
It is preferred that and not restrictive, in one or more illustrative embodiments of the utility model, cyclone separator
30 further include separation cone 35.35 vertex of separation cone are co-axially located at upward on the channel of the second disengagement chamber 32.Illustratively, it separates
The vertex of cone 35 extends in the first disengagement chamber 31.Separation cone 35 can be improved cyclonic separation effect, and when dust is fallen to
When on separation cone 35, can more uniformly it fall on the helix-type channel 321 of the second disengagement chamber 32, and then from 34 row of dust-exhausting port
Out.Illustratively, separation cone 35 includes trunk portion 351 and cone portion 352, the bottom end of trunk portion 351 and the second disengagement chamber 32
Channel 321 is connected, and cone portion 352 is pyramid type structure, and the upper end of trunk portion 351 is arranged in.Illustratively, the first disengagement chamber
31, the second disengagement chamber 32 and separation cone 35 are integrally formed.
It is preferred that and not restrictive, in one or more illustrative embodiments of the utility model, cyclone separator
There is section 312a, the section 312a of multiple wind blades 312 to be located on same cylindrical surface for the outer end of 30 wind blade 312.
Further, referring to figs 12 to shown in Figure 15, in one or more illustrative embodiments of the utility model,
The wind deflector unit 50 of funnel type includes taper portion 51 and tubular portion 52, and 51 upper end of taper portion is formed with filter layer cavity 511, cone cell
Portion 51 is downwardly extending tubular portion 52.Illustratively, the diameter of tubular portion 52 is 20~35mm, preferably 30mm.Filter layer
Cavity 511 can be to be columnar, and diameter is identical as the diameter of the upper end of taper portion 51, and filter layer 40 can be contained in filter layer
It in cavity 511, and is tapered space between filter layer 40 and taper portion 51.Dusty gas is under the suction of induced-draught electric motor
Taper portion 51 is entered by tubular portion 52, enables dusty gas uniformly across filter layer 40.Wind deflector unit 50 further include to
A few baffle 53, baffle 53 are extended vertically downward by the end face of tubular portion 52, and illustratively, baffle 53 is along the end of tubular portion 52
Face is arranged radially.Illustratively, the shape of baffle 53 can be semi-circular, trapezoidal or triangle.Reality shown in the figure
It applies in mode, the quantity of baffle 53 is two, and two baffles 53 are mutually perpendicular to, and baffle 53 is approximately trapezoidal.It should be appreciated that
, quantity, location and shape of baffle 53 etc. are not limited thereto, and those skilled in the art can select according to actual needs
It selects.The dust in gas can be formed and be stopped in the lower end of tubular portion 52 setting baffle 53, so that dust is fallen.
It is preferred that and not restrictive, in one or more illustrative embodiments of the utility model, wind deflector unit 50
The outer wall of tubular portion 52 and the distance between the inner end of wind blade 312 of cyclone separator 30 be less than or equal to 7mm.Wind-guiding
The distance between the vertex of the separation cone 35 of the baffle 53 and cyclone separator 30 of unit 50 is less than or equal to 30mm.
It is preferred that and not restrictive, the end face of tubular portion 52 is not higher than the water where the center of the air inlet 11 of dust pocket 10
Plane.In the exemplary embodiment shown in the figure, the center institute of the air inlet 11 of the end face of tubular portion 52 and dust pocket 10
Horizontal plane be overlapped (with reference to shown in Fig. 3).Such design is so that the ash filtered out in dust pocket 10 by filtering screen 20
The power that dirt falls to the bottom of dust pocket 10 is greater than upward suction, so that dust to be preferably pressed onto the bottom of dust pocket 10.
Further, with reference to shown in Fig. 4~6, in one or more illustrative embodiments of the utility model, dirt is led
Unit 60 includes horn-like dust guiding tube 61, and the wide mouth part of dust guiding tube 61 has extended obliquely downward dust retaining ring 62.It is preferred that rather than limiting
Property processed, the angle of dust retaining ring 62 and horizontal plane is 40~60 °, more preferably 45 °.It is preferred that and not restrictive, dust retaining ring
62 width is 14~17mm, more preferably 16.12mm.Illustratively, dust retaining ring 62 is made of rubber.Preferably, dust-break
Ring 62 is made of flexible glue.It is further preferred that dust retaining ring 62 is made of silica gel, PVC, TPE or TPU.
It is preferred that and not restrictive, the distance between the outer of dust retaining ring 62 and the inner wall of dust pocket 10 are 6~11mm, excellent
It is selected as 7mm.
It is preferred that and not restrictive, the upper end of filtering screen 20 is outward extended with top plate ring 21, the outer diameter of the top plate ring 21
Match with the internal diameter of dust pocket 10, top plate ring 21 is made of plastics.Top plate ring 21 can be to be tilted upward by filtering screen 20
Extend.Preferably, top plate ring 21 is by ABS plastic, PC plastic, POM plastic, PP plastics, PS plastic, PA plastics or PET plastic
It is made.The material hardness of top plate ring 21 is bigger than the material hardness of dust retaining ring 62, and dust granule falls after being in contact with top plate ring 21,
Eventually fall into the bottom of dust pocket 10.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.For above-mentioned example embodiment made it is any it is simple modification,
Equivalent variations and modification, should all fall into the protection scope of the utility model.
Claims (10)
1. a kind of filter assemblies, are arranged in dust catcher, which is characterized in that the filter assemblies include:
Filtering screen, for cylindrical shape, the filtering screen is longitudinally disposed；
Cyclone separator is co-axially located in the filtering screen；
Wind deflector unit is funnel type structure, which is co-axially located at the upper end of the cyclone separator, the wind-guiding list
Open Side Down extends in the cyclone separator for the tubular portion of member；
HEPA filter layer, is arranged in the upper end of the wind deflector unit, the HEPA filter layer with a thickness of 15mm~20mm；With
And
Dirt unit is led, to be horn-like, this leads the lower end that dirt unit is co-axially located at the filtering screen, this leads the wide of dirt unit
Mouth end is connected with the lower end of the filtering screen upward.
2. filter assemblies according to claim 1, which is characterized in that the filter assemblies are co-axially located at the dust catcher
Dust pocket in, the slot end for leading dirt unit and the bottom surface of the dust pocket are removably tightly connected.
3. filter assemblies according to claim 2, which is characterized in that the upper end of the taper portion of the wind deflector unit is formed with
Filter layer cavity, the HEPA filter layer are arranged in the filter layer cavity.
4. filter assemblies according to claim 3, which is characterized in that the filter layer cavity be it is columnar, diameter with
The diameter of the upper end of the taper portion is identical.
5. filter assemblies according to claim 4, which is characterized in that the top surface of the HEPA filter layer to the dust pocket
Bottom surface between height be 120~150mm.
6. filter assemblies according to claim 2, which is characterized in that the side wall upper part of the dust pocket is equipped with air inlet,
The end face of the tubular portion of the wind deflector unit is not higher than the horizontal plane where the center of the air inlet.
7. filter assemblies according to claim 2, which is characterized in that between the filtering screen and the dust pocket away from
From more than or equal to 35mm.
8. filter assemblies according to claim 1, which is characterized in that the diameter of the tubular portion of the wind deflector unit be 20~
35mm。
9. filter assemblies according to claim 1, which is characterized in that the wind deflector unit further includes at least one baffle,
The baffle is extended vertically downward by the end face of the tubular portion.
10. filter assemblies according to claim 9, which is characterized in that diameter of the baffle along the end face of the tubular portion
To setting, the quantity of the baffle is two, and is mutually perpendicular to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821411924.0U CN208839278U (en) | 2018-08-30 | 2018-08-30 | Filter assemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821411924.0U CN208839278U (en) | 2018-08-30 | 2018-08-30 | Filter assemblies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208839278U true CN208839278U (en) | 2019-05-10 |
Family
ID=66356512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821411924.0U Active CN208839278U (en) | 2018-08-30 | 2018-08-30 | Filter assemblies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208839278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110507240A (en) * | 2019-09-23 | 2019-11-29 | 小狗电器互联网科技（北京）股份有限公司 | A kind of front end unit and dust catcher of dust catcher |
-
2018
- 2018-08-30 CN CN201821411924.0U patent/CN208839278U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110507240A (en) * | 2019-09-23 | 2019-11-29 | 小狗电器互联网科技（北京）股份有限公司 | A kind of front end unit and dust catcher of dust catcher |
| CN110507240B (en) * | 2019-09-23 | 2024-06-14 | 北京小狗吸尘器集团股份有限公司 | Front end unit of dust collector and dust collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 7-605, 6th floor, building 1, yard a, Guanghua Road, Chaoyang District, Beijing 100026 Patentee after: Beijing dog vacuum cleaner Group Co.,Ltd. Address before: 100101 6, 1 building, 169 Beiyuan Road, Chaoyang District, Beijing. Patentee before: PUPPY ELECTRONIC APPLIANCES INTERNET TECHNOLOGY (BEIJING) Co.,Ltd. |
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| CP03 | Change of name, title or address |