CN2528992Y - Low-noise electric fan - Google Patents
Low-noise electric fan Download PDFInfo
- Publication number
- CN2528992Y CN2528992Y CN 01279504 CN01279504U CN2528992Y CN 2528992 Y CN2528992 Y CN 2528992Y CN 01279504 CN01279504 CN 01279504 CN 01279504 U CN01279504 U CN 01279504U CN 2528992 Y CN2528992 Y CN 2528992Y
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- China
- Prior art keywords
- impeller
- fixing frame
- periphery
- shell block
- pin
- 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 - Lifetime
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- 230000007306 turnover Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The utility model relates to a low-noise electric fan; wherein, a case base is arranged on a pin connected part, an impeller is nested on the pin connected part, even numbered and mutual interval-distributed magnet poles and a circuit board are arranged on the periphery of the case base, a set of magnet rings are arranged on the periphery of the impeller, a, external frame covers the impeller after being fastened with the case base, an air inlet is arranged on the middle part of the external frame, and an air outlet is arranged on the bottom of the case base. The utility model is characterized in that external end edges of blades on the impeller are connected with a sanding frame of which the axial thickness is bigger than that of the external end edges of each blade on the impeller, and the side of the magnet ring is nested on the periphery of the standing frame. When the impeller rotates, air flow driven by the blades of the impeller is not laterally driven along the external end edges of blades, so, wind shear can not be formed by the air flow and the external frame or the ring wall of the case base, the rotating noise of the impeller can be reduced, and effective axial driven air flow can be generated in the rotation of the impeller.
Description
Technical field
The utility model relates to a kind of electric fan, particularly a kind of low noise electric fan.
Background technique
See also shown in Figure 1, it is a kind of existing heat-dissipating fan structure, this heat-dissipating fan has a housing 80 that is provided with holding space 81, this holding space 81 is installed with the stator 82 that is wound with coil, this stator 82 articulates rotation for the rotatingshaft 84 of rotor 83, when these rotor 83 rotations, because its blade 85 external end edges are the tangent plane of scraping of each self-separation, when stirring air-flow, have big noise, thus and the ringwall of housing 80 holding space that forms 81 between can produce bigger wind when rotating and cut noise.
In addition, see also Fig. 2, shown in Figure 3, it is No. 382412 ' the improvement structure of heat-dissipating fan ' case of Taiwan patent announcement that the applicant applied for, it is a kind of external pole type heat-dissipating fan, this heat-dissipating fan has a substrate 90, axle 91 on the substrate 90 can be supported impeller 92 rotations, blade 93 external end edges of impeller 92 are in conjunction with a magnet ring 94, substrate 90 is provided with several poles 95, substrate 90 is by 96 cover caps of a housing, 95 of the poles of this magnet ring 94 and substrate 90 can interact, and make this impeller 92 rotations, and its blade 93 propellantes flow.Though this scheme is combined with magnet ring 94 in the blade outer rim, when impeller rotates, scraping of producing between itself and the air-flow cut phenomenon and reduced to some extent, decreasing of noise, but because the magnet ring 94 of this external pole type heat-dissipating fan is a circular ring body, and it only has less height, therefore, when this magnet ring 94 is combined in blade 93 external end edges, this blade 93 still protrude magnet ring 94 axially on, the outside, lower end, therefore, when this heat-dissipating fan was rotated, the air-flow that this blade 93 is imported can't be driven towards set axial direction effectively, still can be by on these blade 93 terminals and the magnet ring 94, the lower end forms position, thickness difference position and does the side direction escape, the air-flow that this side direction is escaped be looped around between the pole 95 and other convex-concave portion of its all side, still can produce wind and cut noise, and since the blade periphery not firmly by whole enclosings, the air-flow of its generation has side ease phenomenon, influences the air-supply effect of required direction.
Summary of the invention
The purpose of this utility model just is to overcome the above-mentioned technical problem that prior art exists, and provide a kind of noise low, the effective low noise electric fan of blowing, its technological scheme is as follows: a kind of low noise electric fan, it has a shell block that is provided with the pin-joint part, impeller is sleeved on the pin-joint part, be provided with an even number of poles and a circuit board separately in all sides of shell block, other has a magnet ring that is placed on the impeller periphery, after housing and shell block are interlocked with the impeller ladle cover in it, there is a wind inlet at the housing middle part, the shell block bottom has exhaust outlet, it is characterized in that: the blade external end edge at impeller is combined with a fixing frame, and the thickness vertically of fixing frame is greater than the thickness vertically of the external end edge of each blade of impeller in it, and magnet ring then is set in the periphery of fixing frame.Because the blade external end edge of impeller is provided with fixing frame, and, the upper and lower end thickness of this blade is also less than the axial thickness of this fixing frame, when impeller rotated, the air-flow that blade drove of impeller can't be driven as side direction by its external end edge position and send, so, air-flow just can not form wind and cut with the ringwall of this housing or shell block, therefore, the Rotation Noise of this impeller can reduce, and the impeller rotation time can produce the bigger air-flow that effectively axially drives.
Description of drawings
Fig. 1 is the STRUCTURE DECOMPOSITION figure of existing electric fan.
Fig. 2 is the STRUCTURE DECOMPOSITION figure of another existing electric fan.
Fig. 3 is the sectional drawing after Fig. 2 combination.
Fig. 4 is the utility model first embodiment's STRUCTURE DECOMPOSITION figure.
Fig. 5 makes up the plan view that the back is seen by the housing inboard for Fig. 4.
Fig. 6 is a 3-3 sectional drawing among Fig. 5.
Fig. 7 is the utility model second embodiment's a sectional drawing.
Fig. 8 is the utility model the 3rd embodiment's STRUCTURE DECOMPOSITION figure.
Fig. 9 is the plan view after Fig. 8 combination.
Figure 10 is the 7-7 sectional drawing of Fig. 9.
Specific embodiment
Describe below in conjunction with 4 to 10 pairs of concrete structures of the present utility model of accompanying drawing:
A kind of low noise electric fan, it has a shell block 1 that is provided with pin-joint part 11, impeller 3 is sleeved on the pin-joint part 11, be provided with an even number of poles 12 and a circuit board 13 separately in shell block 1 all sides, other has a magnet ring 35 that is placed on impeller 3 peripheries, after housing 2 is interlocked with shell block 1 with impeller 3 ladle covers in it, there is a wind inlet 22 at housing 2 middle parts, shell block 1 bottom has exhaust outlet 15, it is characterized in that: the blade external end edge at impeller 3 is combined with a fixing frame 34, the thickness vertically of fixing frame 34 is greater than the thickness vertically of the external end edge of each blade 33 of impeller in it, 35 peripheries that are set in fixing frame of magnet ring.Extremely shown in Figure 6 referring to Fig. 4.
The diameter of the circular fixing frame 34 of or independent moulding one-body molded with impeller 3 is greater than the diameter of housing 2 middle part wind inlets 22.Referring to shown in Figure 6.
The upper end of circular fixing frame 34 has the arc edge 36 of toroidal.Referring to Fig. 4 and shown in Figure 6.
The periphery of the top wind inlet 22 of housing 2 is provided with following the turn over arc edge 24 identical with toroidal arc edge 36 expanded configuration of fixing frame 34.Referring to shown in Figure 7.
After turning over arc edge 24 and arc edge 36 make-ups down, wind inlet 22 peripheries form bell mouth shape young and that increase to wind inlet 22 peripheries gradually.Referring to shown in Figure 7.
A kind of low noise electric fan, it has a shell block 4 that is provided with pin-joint part 44, impeller 5 is sleeved on the pin-joint part 44, and be placed in the holding space 41 of shell block, pin-joint part 44 peripheries are provided with stator seat 43, shell block 4 bottoms have exhaust outlet 45, magnet 55 on the hub portion 51 of impeller 5 is positioned at the periphery of stator seat 43, it is characterized in that: the external end edge at the blade 53 of impeller 5 is combined with a fixing frame 54, and the thickness vertically of fixing frame 54 is greater than the thickness vertically of the external end edge of each blade 53 of impeller in it.Extremely shown in Figure 10 referring to Fig. 8.
Below in conjunction with relevant drawings to each embodiment of the utility model more the structure of detail and working principle auspicious state as follows:
See also accompanying drawing 4, it is the utility model first preferred embodiment, impeller 3 rotations can be supported in pin-joint part 11 on the shell block 1, pin-joint part 11 can be central shaft or center hole, on the shell block 1 of pin-joint part 11 all sides, be provided with even number of poles 12, magnetic pole 12 can be led with electric current, in order to produce magnetic field and electric current, and shell block 1 also is provided with circuit board 13, circuit board 13 is provided with sense cell and other control units, the change in polarity of the permanent magnet rings 35 on the impeller 3 is located in the sense cell detecting, makes this magnetic pole 12 change current direction and produce alternating magnetic field; Shell block 1 is provided with conjunction 14 and exhaust outlets 15 such as barb in addition, and conjunction 14 can be for housing 2 combinations, and exhaust outlet 15 can drive air-flow and send towards certain orientation.
See also Fig. 5, shown in Figure 6, it is plan view and sectional drawing after the combination of first preferred embodiment of the present utility model, impeller 3 is articulated in the pin-joint part 11 of shell block 1 by pin-joint part 32, the arc edge 36 of this impeller 3 is corresponding to the wind inlet 22 of this housing 2, magnetic pole 12 magnetic field that produces repulsion mutually when permanent magnet rings 35 with the shell block 1 of impeller 3, impel impeller 3 to be driven in rotation, because blade 33 external end edges of impeller 3 have fixing frame 34, and, the maximum diameter of arc edge 36 is greater than the diameter of the wind inlet 22 of housing 2, therefore, during impeller 3 rotations, driven air-flow promptly can be sucked by the wind inlet 22 of housing 2, can send by the exhaust outlet 15 of shell block 1 again, and driven air-flow do not have with the wall of shell block 1 and contacts, therefore, cut problem with the shell wall of shell block 1 with regard to not having wind during impeller 3 rotation, and the noise of impeller 3 when rotating just can be lowered.
See also shown in Figure 7, it is second preferred embodiment of the present utility model, the structure that this embodiment disclosed is, the roof 23 of housing 2 forms the following arc edge 24 that turns over that extends downwards, and it is consistent with arc edge 36 formation of impeller 3 to turn over arc edge 24 down, therefore, and when impeller 3 rotates, this driven air-flow just can flow more swimmingly, and is sent by exhaust outlet 15.
See also shown in Figure 8, it is the utility model the 3rd preferred embodiment, this heat-dissipating fan is made of shell block 4, impeller 5, shell block 4 is provided with a holding space 41, shell block 4 has a substrate 42 and exhaust outlet 45, and substrate 42 is provided with stator seat 43, and stator seat 43 has pin-joint part 44, pin-joint part 44 can be axis hole or central shaft, and pin-joint part 44 articulates rotation for the pin-joint part 52 of impeller 5.Impeller 5 is by a hub portion 51 and be provided with pin-joint part 52, this pin-joint part 52 can be rotatingshaft or axis hole, pin-joint part 52 can be actively socketed on rotation in the pin-joint part 44 of shell block 4, impeller 5 is by hub portion 51 and establish radial several blade 53, blade 53 terminals are established a fixing frame 54, the thickness vertically of fixing frame 54 makes the upper and lower end of blade 53 not protrude from fixing frame 54 greater than the thickness vertically of blade 53.
See also Fig. 9, shown in Figure 10, it is plan view and sectional drawing after the combination of the 3rd preferred embodiment of the present utility model, impeller 5 is articulated in the pin-joint part 44 of shell block 4 by pin-joint part 52, the magnetic field repulsion mutually that the permanent magnet 55 of impeller 5 and the stator seat 43 of shell block 4 are produced, impel this impeller 5 to be driven in rotation, because blade 53 external end edges of impeller 5 have fixing frame 54, the thickness vertically of fixing frame 54 is greater than the thickness vertically of blade 53, therefore, during impeller 5 rotations, driven air-flow just can be sucked by shell block 4 set holding spaces 41, and the exhaust outlet 45 by shell block 4 is sent, and driven air-flow can not contact with the shell wall of shell block 4, therefore, cut problem with the shell wall of shell block 4 with regard to not having wind during impeller 5 rotation, and the noise of impeller 5 when rotating just can be lowered.
Embodiment disclosed in the utility model really can reach desired use effect, its disclosed concrete structure, not only do not seen in the like product, before also not being disclosed in application, anyly be familiar with this operator, in not breaking away from spirit and scope of the present utility model, all can implement, meet the regulation and the requirement of Patent Law fully, the existing application that in accordance with the law proposes utility model patent is earnestly asked and is examined and grant quasi patent.
Claims (6)
1, a kind of low noise electric fan, it has a shell block that is provided with the pin-joint part, impeller is sleeved on the pin-joint part, be provided with an even number of poles and a circuit board separately in all sides of shell block, other has a magnet ring that is placed on the impeller periphery, after housing and shell block are interlocked with the impeller ladle cover in it, there is a wind inlet at the housing middle part, the shell block bottom has exhaust outlet, it is characterized in that: the blade external end edge at impeller is combined with a fixing frame, the thickness vertically of fixing frame is greater than the thickness vertically of the external end edge of each blade of impeller in it, and magnet ring then is set in the periphery of fixing frame.
2, low noise electric fan according to claim 1 is characterized in that: the diameter of the circular fixing frame of or independent moulding one-body molded with impeller is greater than the diameter of housing middle part wind inlet.
3, according to claim 1,2 described low noise electric fans, it is characterized in that: the upper end of circular fixing frame has the arc edge of toroidal.
4, low noise electric fan according to claim 1 is characterized in that: the periphery of the top wind inlet of housing is provided with following the turn over arc edge identical with the toroidal arc edge expanded configuration of fixing frame.
5, low noise electric fan according to claim 4 is characterized in that: form bell mouth shape young and that increase to the wind inlet periphery gradually after turning over arc edge and arc edge make-up under the wind inlet periphery.
6, a kind of low noise electric fan, it has a shell block that is provided with the pin-joint part, impeller is sleeved on the pin-joint part, and be placed in the holding space of shell block, the pin-joint part periphery is provided with stator seat, and the shell block bottom has exhaust outlet, and the magnet on the hub portion of impeller is positioned at the periphery of stator seat, it is characterized in that: the external end edge at the blade of impeller is combined with a fixing frame, and the thickness vertically of fixing frame is greater than the thickness vertically of each blade external end edge of impeller in it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01279504 CN2528992Y (en) | 2001-12-25 | 2001-12-25 | Low-noise electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01279504 CN2528992Y (en) | 2001-12-25 | 2001-12-25 | Low-noise electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2528992Y true CN2528992Y (en) | 2003-01-01 |
Family
ID=33682724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01279504 Expired - Lifetime CN2528992Y (en) | 2001-12-25 | 2001-12-25 | Low-noise electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2528992Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465460C (en) * | 2005-11-01 | 2009-03-04 | 日本电产株式会社 | Centrifugal fan |
| CN101619731B (en) * | 2008-07-04 | 2011-06-29 | 富准精密工业(深圳)有限公司 | Cooling fan |
-
2001
- 2001-12-25 CN CN 01279504 patent/CN2528992Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465460C (en) * | 2005-11-01 | 2009-03-04 | 日本电产株式会社 | Centrifugal fan |
| CN101619731B (en) * | 2008-07-04 | 2011-06-29 | 富准精密工业(深圳)有限公司 | Cooling fan |
| US8092170B2 (en) | 2008-07-04 | 2012-01-10 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Axial fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111225 Granted publication date: 20030101 |