CN1303929C - Centrifuging blower for vacuum dust collector - Google Patents
Centrifuging blower for vacuum dust collector Download PDFInfo
- Publication number
- CN1303929C CN1303929C CNB021487286A CN02148728A CN1303929C CN 1303929 C CN1303929 C CN 1303929C CN B021487286 A CNB021487286 A CN B021487286A CN 02148728 A CN02148728 A CN 02148728A CN 1303929 C CN1303929 C CN 1303929C
- Authority
- CN
- China
- Prior art keywords
- mentioned
- motor
- air
- fan
- suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a centrifugal blower for a vacuum cleaner, particularly to a centrifugal blower for a vacuum cleaner, which is capable of reducing noise when air which is not pressurized flowing through a motor to enable the motor to release heat. The centrifugal blower for a vacuum cleaner, which is provided by the present invention, comprises a housing body with a suction inlet and an exhaust outlet for sucking and exhausting air, a motor arranged in the housing body, a suction fan which is connected with a motor and sucks air in by rotation, and cooling fans which are connected with the motor and enable air to be exhausted out through the motor by rotation. In the present invention, because a plurality of cooling fans are connected to the back of the motor, a part of pressurized air flows through the motor; thus, the present invention has the advantage of improving the cooling efficiency of the motor. The present invention not only improves the cooling efficiency of the motor but also increases the quantity of delivered air; even if the motor rotate at a low speed, the required cooling efficiency of the motor and the required quantity of delivered air can be obtained; thus, the present invention has the advantage of reducing noise when the motor rotates.
Description
Technical field
The present invention relates to the vacuum cleaner centrifugal blower in a kind of dust catcher field, particularly relate to a kind ofly when flowing through motor and make its heat radiation by the air that is not under pressure as yet, the vacuum cleaner that can reduce noise is with centrifugal blower (The multi-stage fan of a vacuum cleaner).
Background technology
Existing vacuum cleaner is the cleaning device that produces suction and remove foreign matter such as dust by suction, it is installed in body interior and is provided with the dust bag that is used for filtering the dust from the suction passage inhaled air, and sucks air and produce the centrifugal blower of suction.
See also Fig. 1, shown in Figure 2, Fig. 1 is the schematic perspective view of existing vacuum cleaner, and Fig. 2 is the sectional drawing of existing vacuum cleaner.Fig. 3 is the sectional drawing of existing vacuum cleaner with centrifugal blower.
As shown in Figure 1, existing vacuum cleaner is made up of the body 4 that has dust bag 2 and centrifugal blower 20 etc. in fact.Be inserted with tube connector 5 and suction hose 6 that an end can separate on the patchhole 4a of above-mentioned body 4, have on the other end of above-mentioned suction hose 6 and can insert or separate and form the handle 8 of one with the master control portion 7 of control dust catcher action, above-mentioned handle 8 other ends have the prolongation pipe 10 that can insert or separate, the inlet nozzle that is used for dust suction 12 of the separable or insertion of the other end setting of above-mentioned prolongation pipe 10.
As shown in Figure 2, above-mentioned body 4 inside are provided with the dust bag 2 of the dust of filtration from the suction passage inhaled air, above-mentioned dust bag 2 rears are equipped with and produce suction so that suck the centrifugal blower 20 of air, are separately installed with air-breathing screen pack 14 and exhaust gas filter net 15 on forward and backward side's body of above-mentioned centrifugal blower.
Like this, pass through the discharge filter 15 and the exhaust outlet 4b discharge at above-mentioned body 4 rears by the air of centrifugal blower 20.
As shown in Figure 3, centrifugal blower 20, it includes: the one side be provided with suction inlet 22a and its opposite side be provided with outlet 22b housing 22, be arranged in the above-mentioned suction inlet 22a the suction air with suck fan 24, with above-mentioned suction fan 24 rotating shafts that are connected 25, drive the motor 26 of above-mentioned suction fan 24 and be arranged on above-mentioned suction fan 24 and motor 26 between, fan 24 by above-mentioned suction inhaled air be sent to the diffuser 28 of above-mentioned motor 26.
To fan 24 the place ahead inhaled airs in order making, to discharge, between loam cake 24a and lower cover 24b, be vertically installed with fin 24c along the circumferencial direction of above-mentioned suction fan 24 from above-mentioned suction.
Above-mentioned diffuser 28, it includes: discoid diffuser body 28a, along the circumferential direction to be arranged on above-mentioned diffuser body 28a upside and above-mentioned suction fan 24 peripheral and carry the diffuser vane 28b of the air that is blown into and along the circumferential direction be arranged on above-mentioned diffuser body 28a downside and the air of carrying be directed to the guide blades 28c of above-mentioned motor 26 by above-mentioned diffuser vane 28b.
Above-mentioned motor 26, it comprises: the commutator 26c and the brush 26d that are fixed on stator 26a on above-mentioned housing 22 madial walls, limit distance and be fixed on the rotor 26b on the above-mentioned rotating shaft 25 and supply with external power source to above-mentioned stator 26a or above-mentioned rotor 26b at said stator 26a clear width.
Now will be as above the vacuum cleaner of the prior art of structure be described as follows with the running situation of centrifugal blower.
At first, by external power source, electric current flow through brush 26d and commutator 26c are transferred to motor 26 1 sides, make stator 26a and rotor 26b produce electromagnetic force each other, and torque takes place thus, drive the rotor 26b rotation that is arranged on the rotating shaft 25.
Thereupon, be connected suction fan 24 rotations of above-mentioned rotating shaft 25 1 sides, make air pass through the inlet portion that suction inlet 22a inspiration sucks fan 24, the longshore current circulation passage is discharged from the export department that sucks fan 24.
Afterwards, fan the air of 24 export departments discharge by above-mentioned suction and carry, and the air that above-mentioned diffuser vane 28b carries is directed to motor 26 by above-mentioned guide blades 28c by above-mentioned diffuser vane 28b.The air that flows into above-mentioned motor 26 is flowed through high speed rotor rotated 26b with the stator 26a that fixes and after cooling off, from the outlet 22b discharge of housing.
People's active demand is the product that noise is low, inhalation power is strong on the nearest market, and there is following problem in existing vacuum cleaner with centrifugal blower.One of them problem is, produce strong inhalation power, just must use high-speed rotary motor, so noise can correspondingly increase also.Another problem is, motor causes motor overheating that the temperature of motor is risen when rotating at a high speed, and this motor temperature then can bring fatal influence to motor properties and life-span when rising to a certain degree.
This shows that above-mentioned existing vacuum cleaner still has many defectives with centrifugal blower, and demands urgently further being improved.
In order to solve the problem that above-mentioned vacuum cleaner exists with centrifugal blower, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing vacuum cleaner exists with centrifugal blower, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, in the hope of founding a kind of vacuum cleaner centrifugal blower of new structure, can improve general existing on the market conventional vacuum cleaner centrifugal blower structure, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Main purpose of the present invention is, overcome the defective that existing vacuum cleaner exists with centrifugal blower, and the vacuum cleaner that a kind of new structure is provided centrifugal blower, technical problem underlying to be solved is by the lower fan of several running speeds being set, making it can reduce noise in cooling motor.
Purpose of the present invention and to solve its technical problem underlying be to adopt following technical scheme to realize.Vacuum cleaner centrifugal blower according to the present invention's proposition, it comprises and has the housing that sucks or discharge suction inlet that air uses and outlet, is arranged on motor in the above-mentioned housing, is connected with above-mentioned motor and fans by the suction that rotation sucks air, wherein is provided with to be connected with above-mentioned motor and to make air pass through the more than one cooling fan of above-mentioned motor discharge by rotation; Between described suction fan and motor, be provided with first diffuser that the air by above-mentioned suction fan is transported to above-mentioned motor; Be provided with second diffuser that the air of will discharge from cooling fan is transported to outlet at described cooling fan rear.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, vacuum cleaner centrifugal blower of the present invention, it comprises: have the housing that sucks or discharge suction inlet that air uses and outlet, be arranged on motor in the above-mentioned housing, be connected with above-mentioned motor and fan by the suction that rotation sucks air, and be connected with above-mentioned motor and make air pass through the cooling fan of above-mentioned motor discharge by rotation.Vacuum cleaner centrifugal blower of the present invention because of the motor rear connects several cooling fans, makes the air of a part of pressurized motor of flowing through, so have the advantage that improves the motor cooling effectiveness.
Another advantage is, motor not only connects and sucks fan and also connect several cooling fans and carry air, therefore compares with the situation of a fan, when keeping identical suction pressure rotary electric machine, increases greatly than the situation air output of a fan.
Therefore, the present invention has not only improved the cooling effectiveness of motor, has also increased the air quantity of carrying, and also can obtain the air quantity of desired motor cooling effectiveness and conveying even motor slowly runs.So have the advantage that reduces the noise that produces when motor rotates.
In sum, the vacuum cleaner centrifugal blower of special construction of the present invention, have above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use, no matter and its structurally or bigger improvement is all arranged on the function, have large improvement technically, and produced handy and practical effect, and have the effect of enhancement really, thus be suitable for practicality more, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the schematic perspective view of existing vacuum cleaner.
Fig. 2 is the sectional drawing of existing vacuum cleaner.
Fig. 3 is the sectional drawing of existing vacuum cleaner with centrifugal blower.
Fig. 4 is the sectional drawing of vacuum cleaner one embodiment of the present invention.
Fig. 5 is the sectional drawing of vacuum cleaner of the present invention with centrifugal blower one embodiment.
Fig. 6 is the sectional drawing of another embodiment of vacuum cleaner of the present invention.
Fig. 7 is the sectional drawing of vacuum cleaner of the present invention with another embodiment of centrifugal blower.
2 ... dust bag 4 ... body of dust collector
4a ... patchhole 4b ... exhaust outlet
5 ... tube connector 6 ... suction hose
7 ... master control portion 8 ... handle
10 ... prolong pipe 12 ... suction nozzle
14 ... air-breathing screen pack 15 ... the exhaust gas filter net
20 ... centrifugal blower 22 ... housing
22a ... suction inlet 22b ... outlet
24 ... suck fan 24a ... loam cake
24b ... lower cover 24 ... fin
26 ... motor 26a ... stator
26b ... rotor 26c ... commutator
26d ... brush 28 ... diffuser
28a ... diffuser body 28b ... diffuser vane
28c ... guide blades 52 ... body
54 ... dust bag 55 ... air-breathing screen pack
56 ... exhaust gas filter net 60 ... centrifugal blower
62 ... housing 62a ... suction inlet
62b ... outlet 64 ... motor
64a ... stator 64b ... rotor
65a ... the first rotating shaft 65b ... second rotating shaft
66 ... suck fan 66a ... loam cake
66b ... lower cover 68 ... cooling fan
68a ... loam cake 68b ... lower cover
72 ... the first diffuser 72a ... the first diffuser body
72b ... the first diffuser vane 72c ... first guide blades
74 ... the second diffuser 74a ... the second diffuser body
74b ... the second diffuser leaf 74c ... second guide blades
75 ... air-breathing screen pack 76 ... the exhaust gas filter net
77 ... body 78 ... dust bag
80 ... centrifugal blower 82 ... housing
82a ... suction inlet 82b ... outlet
84 ... motor 85 ... rotating shaft
86 ... suck fan 86a ... loam cake
86b ... lower cover 86c ... fin
88 ... cooling fan 88a ... loam cake
88b ... lower cover 88c ... fin
92 ... diffuser 92a ... the diffuser body
92b ... diffuser vane 92c ... guide blades
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the vacuum cleaner that foundation the present invention is proposed is with its specific embodiment of centrifugal blower, structure, feature and effect thereof, describe in detail as after.
See also Fig. 4 to Fig. 7, Fig. 4 is the sectional drawing of vacuum cleaner one embodiment of the present invention, Fig. 5 is the sectional drawing of vacuum cleaner of the present invention with centrifugal blower one embodiment, Fig. 6 is the sectional drawing of another embodiment of vacuum cleaner of the present invention, and Fig. 7 is the sectional drawing of vacuum cleaner of the present invention with another embodiment of centrifugal blower.
As shown in Figure 4, an embodiment of vacuum cleaner of the present invention, it includes: the body 52 that is connected with suction passage, be arranged on above-mentioned body 52 inside, the dust bag 54 that the foreign matters such as dust that suction passage is sucked filter, be installed in above-mentioned dust bag 54 rears and produce the centrifugal blower 60 of the suction that sucks air and be installed in the place ahead of above-mentioned centrifugal blower 60 respectively and the body 52 at rear on, air-breathing screen pack 55 and exhaust gas filter net 56 that the foreign matters such as dust that above-mentioned dust bag 54 is failed to filter filter.
As shown in Figure 5, above-mentioned centrifugal blower 60, it comprises: state thereon air-breathing screen pack 55 1 sides be formed with inhale population 62a and above-mentioned exhaust gas filter net 56 1 sides be formed with outlet 62b housing 62, be arranged on above-mentioned housing 62 inboards motor 64, above-mentioned suction population 62a inboard is set, is connected with above-mentioned motor 64 and is used for sucking the suction fan 66 of air and is provided with that above-mentioned outlet 62b is inboard to be connected with above-mentioned motor 64 and to make air pass through the cooling fan 68 of above-mentioned motor 64 discharges.
In above-mentioned centrifugal blower, be arranged between above-mentioned suction fan 66 and the motor 64 in addition and will be transported to first diffuser 72 of above-mentioned motor 64 by the air of above-mentioned suction fan 66 and be arranged between above-mentioned motor 64 and the cooling fan 68 and will be transported to second diffuser 74 of above-mentioned outlet 62b by the air of above-mentioned motor 64.
Above-mentioned suction fan 66 is connected with the first rotating shaft 65a that protrudes in above-mentioned motor 64 the place aheads, and above-mentioned cooling fan 68 is connected with the second rotating shaft 65b that protrudes in above-mentioned motor 64 rears.
In addition, discharge by circumferencial direction, between the loam cake 66a of above-mentioned suction fan 66 and lower cover 66b, be provided with vertical fin 66c, between the loam cake 68a of cooling fan 68 and lower cover 68b, be provided with vertical fin 68c in order to make the place ahead inhaled air.
Above-mentioned first diffuser 72 is arranged several by the discoidal first diffuser body 72a, on the above-mentioned first diffuser body 72a top by circumferencial direction and is used for carrying the first diffuser vane 72b of the air by above-mentioned suction fan 66 and the first guide blades 72c that arranges several in the above-mentioned first diffuser body 72a bottom by circumferencial direction and be used for the air by the above-mentioned first diffuser vane 72b is directed to above-mentioned motor 64 forms.Above-mentioned second diffuser 74 is arranged several by the discoidal second diffuser body 74a, on the above-mentioned second diffuser body 74a top by circumferencial direction and is used for the second guide blades 74c that force feed arranges several by the second diffuser vane 74b of the air of above-mentioned cooling fan 68 and in the above-mentioned second diffuser body 74a bottom by circumferencial direction and be used for the air by the above-mentioned second diffuser vane 74b is directed to the outlet 62b of above-mentioned housing and forms.
Now the vacuum cleaner of the present invention of above structure is used the running situation of centrifugal blower embodiment, be described in detail as follows.
At first, by external power source, electric current flow through brush 64d and commutator 64c, be fed to motor 64 1 sides, make stator 64a and rotor 64b produce electromagnetic force each other, torque takes place thus, driving is arranged on first, second rotating shaft 65a, the rotor 64b rotation on the 65b.
Thereupon, suction fan 66 rotations that are connected with the above-mentioned first rotating shaft 65a make air pass through the inlet portion that suction inlet 62a inspiration sucks fan 66, and the longshore current circulation passage is discharged from the export department that sucks fan 66.
Afterwards, fan the air of 66 export departments discharge by above-mentioned suction and carry, and the air that the above-mentioned first diffuser vane 72b carries is directed to motor 64 by the above-mentioned first guide blades 72c by the above-mentioned first diffuser vane 72b.
At this moment, fan 66 inhaled airs by above-mentioned suction, by above-mentioned suction the fan 66 and first diffuser vane 72b time, pressurized for the first time.
Then, the air that be under pressure the above-mentioned first time promptly flows into the air of above-mentioned motor, after the high speed of flowing through rotor rotated 64b and stator 64a and the cooling, sucks from the inlet portion of above-mentioned cooling fan 68, discharges from the discharge portion of above-mentioned cooling fan 68 by passage.
Then, carries by the above-mentioned second diffuser vane 74b from the air that the export department of above-mentioned cooling fan 68 discharges, and the air of carrying by the above-mentioned second diffuser vane 74b, by above-mentioned second guide blades 74c guiding, from the outlet 62b discharge of above-mentioned housing.
At this moment, the air of discharging from above-mentioned cooling fan 68, by the above-mentioned cooling fan 68 and the second diffuser vane 74b time, pressurized for the second time.
Therefore, air is being fanned the 66 and first diffuser vane 72b by above-mentioned suction, when the above-mentioned cooling fan 68 and the second diffuser vane 74b, by interim ground pressurized, so the air of a part of pressurized can pass through above-mentioned motor 64, and the cooling effectiveness of motor 64 is improved.
Because above-mentioned suction fan 66 and cooling fan 68 are connected on the above-mentioned motor 64 simultaneously, compare with a situation that sucks fan 66, when keeping identical suction pressure rotary electric machine, increase greatly than a situation air output that sucks fan 66.
The present invention has not only improved the cooling effectiveness of above-mentioned motor 64, has also increased the air quantity of carrying, thus the motor 64 that both can slowly run, the noise in the time of also can reducing above-mentioned motor and rotate.
Another embodiment of vacuum cleaner of the present invention, as shown in Figure 6, it is made up of body 77, dust bag 78, centrifugal blower 80, air-breathing screen pack 75 and exhaust gas filter net 76.
As shown in Figure 7, above-mentioned centrifugal blower 80, it includes: above-mentioned air-breathing screen pack 75 1 sides be formed with inhale population 82a and above-mentioned exhaust gas filter net 76 1 sides be formed with outlet 82b housing 82, be arranged on above-mentioned suction population 82a inboard motor 84, be arranged on above-mentioned motor 84 rears and be connected and be used for sucking the suction fan 86 of air and be arranged on that 86 rears are fanned in above-mentioned suction and be connected the cooling fan 88 that makes air pass through above-mentioned motor 84 discharges with above-mentioned motor 84 with above-mentioned motor 84.
Above-mentioned suction fan 86 is connected with the rotating shaft of giving prominence at above-mentioned motor 84 rears with cooling fan 88.
In above-mentioned centrifugal blower 80, also comprise being arranged on above-mentioned cooling fan 88 rears, will be transported to the diffuser 92 of above-mentioned housing outlet 82b by the air of above-mentioned cooling fan 88 discharges.
For the place ahead inhaled air is discharged by circumferencial direction, between the loam cake 88a of cooling fan 88 and lower cover 88b, be provided with vertical fin 88c being provided with vertical fin 86c between the loam cake 86a of above-mentioned suction fan 86 and the lower cover 86b.
Above-mentioned diffuser 92 includes: discoidal diffuser body 92a, arrange several on above-mentioned diffuser body 92a top by circumferencial direction and be used for force feed and arrange several by the diffuser vane 92b of the air of above-mentioned suction fan 86 and in above-mentioned diffuser body 92a bottom by circumferencial direction and be used for the air by above-mentioned diffuser vane 92b is directed to the guide blades 92c of the discharge portion 82b of above-mentioned housing.
When above-mentioned motor 84 turned round, the also rotation thereupon of above-mentioned suction fan 86 and cooling fan 88 sucked air above-mentioned housing 82 inside and blows over above-mentioned motor 84, cools off above-mentioned motor 84 simultaneously.And the air of blowing over above-mentioned motor 84 is under pressure through above-mentioned suction fan 86 and cooling fan 88 and diffuser 92 time.
That is to say that above-mentioned motor 84 is be not under pressure air cooled, so the cooling effectiveness of motor 84 is very high.
In addition,, compare, when keeping identical suction pressure rotary electric machine, increase greatly than a situation air output that sucks fan 86 with a situation that sucks fan 86 because of above-mentioned suction fan 86 and cooling fan 88 are connected on the above-mentioned motor 84 simultaneously.
The present invention has not only improved the cooling effectiveness of above-mentioned motor 84, has also increased the air quantity of carrying, thus the motor 84 that both can slowly run, the noise in the time of also can reducing above-mentioned motor 84 and rotate.
The vacuum cleaner of the present invention that above-mentioned structure like this constitutes all has many desirable reference parts with the technological innovation of centrifugal blower for technical staff of the same trade now, and the progressive that possesses skills really.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent embodiment of equivalent variations, but every technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (1)
1, a kind of vacuum cleaner centrifugal blower, it comprises: have and suck or discharge the suction inlet that air uses and the housing of outlet; Be arranged on the motor in the above-mentioned housing; The suction fan that is connected and sucks air with above-mentioned motor by rotation; It is characterized in that also being provided with and be connected with above-mentioned motor and make air pass through the more than one cooling fan that above-mentioned motor is discharged by rotation; Between described suction fan and motor, be provided with first diffuser that the air by above-mentioned suction fan is transported to above-mentioned motor; Be provided with second diffuser that the air of will discharge from cooling fan is transported to outlet at described cooling fan rear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021487286A CN1303929C (en) | 2002-11-15 | 2002-11-15 | Centrifuging blower for vacuum dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021487286A CN1303929C (en) | 2002-11-15 | 2002-11-15 | Centrifuging blower for vacuum dust collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1500434A CN1500434A (en) | 2004-06-02 |
| CN1303929C true CN1303929C (en) | 2007-03-14 |
Family
ID=34233292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021487286A Expired - Fee Related CN1303929C (en) | 2002-11-15 | 2002-11-15 | Centrifuging blower for vacuum dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1303929C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483366B (en) * | 2008-01-07 | 2012-06-06 | 苏州工业园区星德胜电机有限公司 | Motor for dust collector |
| CN105708388B (en) * | 2015-12-16 | 2018-01-19 | 美的集团股份有限公司 | Steam cleaner |
| WO2017101257A1 (en) | 2015-12-16 | 2017-06-22 | 美的集团股份有限公司 | Steam vacuum cleaner |
| CN112545389B (en) * | 2020-12-26 | 2022-08-19 | 广州映博智能科技有限公司 | Novel cleaning robot |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05191950A (en) * | 1992-01-13 | 1993-07-30 | Matsushita Electric Ind Co Ltd | Electric blower |
| CN1271061A (en) * | 1999-04-20 | 2000-10-25 | 三洋电机株式会社 | Motor wind blower and motor dust cleaner thereof |
-
2002
- 2002-11-15 CN CNB021487286A patent/CN1303929C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05191950A (en) * | 1992-01-13 | 1993-07-30 | Matsushita Electric Ind Co Ltd | Electric blower |
| CN1271061A (en) * | 1999-04-20 | 2000-10-25 | 三洋电机株式会社 | Motor wind blower and motor dust cleaner thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1500434A (en) | 2004-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1274964C (en) | Centrifugal blower | |
| CN1264569A (en) | Electric broom | |
| CN2704707Y (en) | Electric fan and electric dust collector thereby | |
| JP2005307985A (en) | Electric blower for vacuum cleaner and vacuum cleaner using same | |
| CN1284499C (en) | Vacuum cleaner and its sucking mouth | |
| CN1228553C (en) | Fan with dustproof device | |
| CN1271061A (en) | Motor wind blower and motor dust cleaner thereof | |
| CN1664376A (en) | Blower | |
| CN1303929C (en) | Centrifuging blower for vacuum dust collector | |
| CN1200634C (en) | Electric dust collector | |
| CN1734102A (en) | Centrifugal fan and vacuum cleaner having the centrifugal fan | |
| CN1138500C (en) | Vacuum cleaner and suction piece assembly thereof | |
| CN106859482A (en) | A kind of domestic vacuum cleaners of convenient use | |
| CN1324600A (en) | Electric cleaner | |
| CN1153545C (en) | Electric dust extractor | |
| CN2724607Y (en) | Electric vacuum cleaner | |
| CN1712731A (en) | Blower radiating fan with adding air inflow | |
| CN1278046C (en) | Turbine fan | |
| CN1781428A (en) | Air blower of vacuum cleaner | |
| CN1299629C (en) | Electric vacuum cleaner | |
| CN218030690U (en) | Single-stage centrifugal fan with purification system | |
| CN1276844C (en) | Speed changing device of riding type vehicle | |
| CN218531677U (en) | A dust collector for rice processing screening | |
| CN2721930Y (en) | Low-noise axial-flow fan with big blowing rate | |
| CN1289742C (en) | Air flowing transversely type drum dryer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |