CN1536235A - Structure for reducing resonance noise of external shell of fan for motor of vaccum dust collector - Google Patents
Structure for reducing resonance noise of external shell of fan for motor of vaccum dust collector Download PDFInfo
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- CN1536235A CN1536235A CNA031096727A CN03109672A CN1536235A CN 1536235 A CN1536235 A CN 1536235A CN A031096727 A CNA031096727 A CN A031096727A CN 03109672 A CN03109672 A CN 03109672A CN 1536235 A CN1536235 A CN 1536235A
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- fan
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- vacuum cleaner
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Abstract
The present invention discloses a structure for reducing resonace noise of fan case for vacuum cleaner motor. Said structure includes fan outer protector which is connected with front side opening position of outer shell of vacuum cleaner motor and can be used for protecting fan, diffuser placed on the peripheral surface of the fan and diffuser sealing surface which is connected together with fan outer protector, sectional extended space which is tightly fixed on the front face of diffusion vane formed into diffuser and can reduce flow rate of air high-speed flower out from the fan and resonace-resisting circular groove which is forward projected and formed on the above-mentioned diffuser sealing surface. In the vacuum cleaner provided by said invention the structure capable of reducing motor noise is adopted, so that its product reliability also can be raised.
Description
Technical field
The present invention relates to a kind of invention of vacuum dust collector, furtherly, is the relevant structure that reduces vacuum cleaner motor with the fan drum resonance noise.
Background technique
Vacuum dust collector is that the foreign such as dust that suck are collected in inner device.In order to produce suction, in its main body, motor is set.Below, in conjunction with Fig. 1 to Fig. 3, existing vacuum dust collector is elaborated.
Fig. 1 is the half sectional view of existing motor for vacuum cleaner.Fig. 2 is Fig. 1 side view.Fig. 3 is the partial cross section figure of existing vacuum cleaner motor with fan drum.
As Fig. 1, Fig. 2, shown in Figure 3, the motor 100 of existing vacuum dust collector comprises by motor housing 110, stator 140, rotor 130, motor shaft (not shown), fan 170, diffuser 160, speed change guide vane 150, fan drum 120 formations.The structure of its each parts is as follows with effect.Stator 140 is fixed on cup-shaped motor housing 110 inside.Rotor 130 is inserted in the inside of stator 140, and can rotate.Motor shaft and rotor 130 is fixing, and interlock with it.The two ends of motor shaft are fixed on the motor housing 110 by forward and backward bearing 180,190.Fan 170 is connected an end of motor shaft (not shown), with the motor shaft interlock in, can produce suction.Diffuser 160 is positioned on the outer circumferential face of fan 170.At the back side of diffuser 160, form incorporate with it speed change guide vane 150.Fan housing 120 is connected the front openings position of motor housing 110, and forms air flue.Speed change guide vane 150 is located at fan housing 120 inside.
Diffuser 160 forms many spirality diffuser vanes 161 along the shell of fan 170.This diffuser vane 161 forms many section extending spaces 162, makes the air that flows out by fan 170 air outlet slits 175, reduces its flow velocity.
In the accompanying drawing, unaccounted symbol 101 is a window, and 200 is inner shell, and 210 is commutator, and 220 is conduction brush.
The as above existing vacuum dust collector of Gou Chenging, its action is as follows.At first, provide power supply, make between stator 140 and the rotor 130 and produce electromagnetic action, rotate power to motor 100.At this moment, under the effect of rotor 130 rotating forces, be fixed on the motor shaft (not shown) on the rotor 130 and the fan 170 that is fixed on the motor shaft is rotated.
During fan 170 rotations, can produce pressure difference between the air inlet 174 of fan 170 and the air outlet slit 175.This pressure difference produces air suction.
The suction that produces during fan 170 rotation makes air pass through the air suction inlet 121 of fan drum 120, flows to the air inlet 174 of fan 170.Afterwards, by the air outlet slit 175 of fan 170,, flow at last in the diffuser 160 to flow out at a high speed.
In diffuser 160, many diffuser vanes 161 combine with the diffuser sealing face 122 of fan drum 120, form many section extending spaces 162.The outlet port basal area of this section extending space 162 is greater than the ingress basal area.At this moment, flow to the air of section extending space 162, because of with diffuser vane 161 side frictions, reduce flow velocity.Simultaneously, flow formula as can be known according to fluid, because of mobile section increases gradually, liquid speed further is lowered.The flow content of formula of fluid is, the fluid that in same pipeline, flows, and its flow velocity and basal area are inversely proportional to.
The air of reduction of speed is discharged from by the space between diffuser 160 and the fan drum 120 when flowing through diffuser 160 section extending spaces.Afterwards, flow through the speed change guide vane 150 integrally formed, behind the stator 140 and rotor 130 in the cooling motor shell 110, outwards flow out by window 101 at the diffuser back side.
But existing vacuum cleaner motor has following problem.From the high-speed air that fan 170 is discharged, flow through the section extending space 162 of diffuser 160.At this moment, this air bumps in the side of diffuser vane 161 noise takes place.Simultaneously, the rapid change of flow velocity and pressure difference also produces noise.
And the noise that the noise that takes place in the section extending space 162 and another section extending space take place is poststack mutually, produces and resonates.Thereby, send very harsh noise.
In addition, the noise of generation, major part all passes to the motor outside, therefore, influences the confidence level of product.
Summary of the invention
Technical problem to be solved by this invention is, a kind of end face extending space is produced in the vacuum dust collector diffuser resonance noise of being reduced in is provided, and reduces the invention of vacuum cleaner motor with the structure of fan drum resonance noise.
The technical solution adopted in the present invention is: a kind of structure that reduces vacuum cleaner motor with the fan drum resonance noise; include with the front openings position of vacuum cleaner motor shell and link to each other; and the fan housing of protection fan; diffuser is arranged on the outer circumferential face of fan; the diffuser sealing face that is connected with the fan housing one; closely be fixed on the front of the diffuser vane that constitutes diffuser; and be formed with the section extending space of the flow velocity that can reduce the air that flows out at a high speed from fan with it; on the diffuser sealing face in fan housing sealing diffuser front, around forming the anti-resonance groove that protrudes forward.
As mentioned above,, that is, on fan drum, form the anti-resonance groove, be communicated with each section extending space of diffuser owing in the vacuum dust collector provided by the invention, adopted the structure that reduces motor noise.Thereby prevented that the generation noise is folded mutually, reduced resonance noise, improved reliability of products.
Description of drawings
Fig. 1 is the half sectional view of existing motor for vacuum cleaner;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the partial cross section figure of existing vacuum cleaner motor with fan drum;
Fig. 4 is half cut-away view of motor for vacuum cleaner part provided by the invention;
Fig. 5 is the side view of Fig. 4;
Fig. 6 is the partial cross section figure of motor for vacuum cleaner fan drum provided by the invention.
Wherein:
11,110: motor casing 11a: window
12,120: fan drum 12a: air suction inlet
12b: diffuser sealing face 12c: anti-resonance groove
13,130: rotor 14,140: stator
15,150: speed change guide vane 16,160: diffuser
16a, 161: diffuser vane 16b, 162: section extending space
17,170: fan 17a, 171: front panel
17b, 172: rear board 17c, 173: flabellum
17d, 174: air inlet 17e, 175: air outlet slit
18,180: fore bearing 19,190: rear bearing
11a, 101: window 20,200: inner shell
21,210: commutator 22,220: conduction brush
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing,, further describe as follows the structure of reduction vacuum cleaner motor provided by the invention with the fan drum resonance noise.
Fig. 4 to Fig. 6 is the structure one embodiment schematic representation of reduction vacuum cleaner motor provided by the invention with the fan drum resonance noise.Wherein, Fig. 4 is half cut-away view of motor for vacuum cleaner provided by the invention; Fig. 5 is the side view of Fig. 4; Fig. 6 is the partial cross section figure of motor for vacuum cleaner fan drum provided by the invention.
As Fig. 4, Fig. 5, shown in Figure 6, vacuum cleaner motor provided by the invention comprises by motor housing 11, stator 14, rotor 13, motor shaft (not shown), fan 17, diffuser 16, speed change guide vane 15, fan drum 12 formations.The structure of its each parts is as follows with effect.Stator 14 is fixed on cup-shaped motor housing 11 inside.Rotor 13 is inserted in the inside of stator 14, and can rotate.Motor shaft and rotor 13 is fixing, and interlock with it.The two ends of motor shaft are fixed on the motor housing 11 by forward and backward bearing 18,19.Fan 17 is connected an end of motor shaft (not shown), with the motor shaft interlock time, can produce suction.Diffuser 16 is positioned on the outer circumferential face of fan 17.At the back side of diffuser 16, form incorporate with it speed change guide vane 15.Fan housing 12 is connected the front openings position of motor housing 11, and forms air flue.Speed change guide vane 15 is located at fan housing 12 inside.
Diffuser 16 forms many spirality diffuser vane 16a along the shell of fan 17.This diffuser vane 16a forms many sections, and the air that the air outlet slit 17e by fan 17 flows out flows to extending space 16b, reduces its flow velocity.
In order to allow the center portion of diffuser 16 each section extending space 16b interconnect,,, protrude formation anti-resonance groove 12c forward along its anchor ring center around diffuser sealing face 12b.
In the accompanying drawing, unaccounted symbol 11a is a window, and 20 is inner shell, and 21 is commutator, and 22 is conduction brush.
Vacuum cleaner motor working principle provided by the invention is as follows.At first, provide power supply, make between stator 14 and the rotor 13 and produce electromagnetic action, rotate power to motor 10.At this moment, under the effect of rotor 13 rotating forces, be fixed on the motor shaft (not shown) on the rotor 13 and the fan 17 that is fixed on the motor shaft is rotated.
During fan 17 rotations, can produce pressure difference between the air inlet 17d of fan 17 and the air outlet slit 17e.This pressure difference produces air suction.
The suction that produces during fan 17 rotations makes air pass through the air inlet 17d of fan 17, flows in the fan 17.Afterwards, by the air outlet slit 17e of fan 17,, flow to the section extending space 16b of diffuser 16 at last to flow out at a high speed.
Flow to the high-speed air of diffuser 16 section extending space 16b, bump in the side of diffuser vane noise takes place.And the section in section extending space 16b outlet port is bigger than the section of ingress, so the rapid change of flow velocity and pressure difference, also produces noise.
The noise that the noise that takes place among the section extending space 16b and another section extending space take place is poststack mutually, produces resonance noise.At this moment, diffuser vane 16a divides section extending space 16b, the diffuser sealing face 12b sealing diffuser vane 16a front of fan drum.And diffuser sealing face 12b possesses anti-resonance groove 12c, and this anti-resonance groove 12c is communicated with each the section extending space 16b that is divided by diffuser vane 16a.Therefore, can prevent effectively that the noise of each section extending space 16b generation is folded mutually, reduce resonance noise.And, form phase difference between the noise that each sectional space 16b is produced, take place to disappear mutually, thereby, can reduce the motor noise of vacuum dust collector.
Claims (2)
1. one kind is reduced the structure that vacuum cleaner motor is used the fan drum resonance noise; include with the front openings position of vacuum cleaner motor shell (11) and link to each other; and the fan housing (12) of protection fan (17); diffuser (16) is arranged on the outer circumferential face of fan (17); the diffuser sealing face (12b) that is connected with fan housing (12) one; closely be fixed on the front of the diffuser vane (16a) that constitutes diffuser (16); and be formed with the section extending space of the flow velocity that can reduce the air that flows out at a high speed from fan (17) with it; it is characterized in that; on the diffuser sealing face (12b) in fan housing (12) sealing diffuser (16) front, around forming the anti-resonance groove (12c) that protrudes forward.
2. the reduction vacuum cleaner motor according to claim 1 structure of fan drum resonance noise, it is characterized in that, in order to allow the center portion of each section extending space of diffuser (16) interconnect, described anti-resonance groove (12c), be around diffuser sealing face (12b), along its anchor ring center, protrude formation forward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031096727A CN1536235A (en) | 2003-04-11 | 2003-04-11 | Structure for reducing resonance noise of external shell of fan for motor of vaccum dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031096727A CN1536235A (en) | 2003-04-11 | 2003-04-11 | Structure for reducing resonance noise of external shell of fan for motor of vaccum dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1536235A true CN1536235A (en) | 2004-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031096727A Pending CN1536235A (en) | 2003-04-11 | 2003-04-11 | Structure for reducing resonance noise of external shell of fan for motor of vaccum dust collector |
Country Status (1)
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| CN (1) | CN1536235A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793510A (en) * | 2011-05-26 | 2012-11-28 | 乐金电子(天津)电器有限公司 | Fan diffuser structure for dust collector |
| CN109247877A (en) * | 2017-07-14 | 2019-01-22 | 美的集团股份有限公司 | Dust catcher and its motor mould group |
| CN113453602A (en) * | 2019-02-20 | 2021-09-28 | 皇家飞利浦有限公司 | Fan framework suspension |
-
2003
- 2003-04-11 CN CNA031096727A patent/CN1536235A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793510A (en) * | 2011-05-26 | 2012-11-28 | 乐金电子(天津)电器有限公司 | Fan diffuser structure for dust collector |
| CN109247877A (en) * | 2017-07-14 | 2019-01-22 | 美的集团股份有限公司 | Dust catcher and its motor mould group |
| US11486282B2 (en) | 2017-07-14 | 2022-11-01 | Midea Group Co., Ltd. | Vacuum cleaner and electric motor module thereof |
| CN113453602A (en) * | 2019-02-20 | 2021-09-28 | 皇家飞利浦有限公司 | Fan framework suspension |
| CN113453602B (en) * | 2019-02-20 | 2022-05-06 | 皇家飞利浦有限公司 | Fan framework suspension |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |