CN1616833B - Centrifugal fan with stable vane and its fan frame - Google Patents
Centrifugal fan with stable vane and its fan frame Download PDFInfo
- Publication number
- CN1616833B CN1616833B CN 200310116123 CN200310116123A CN1616833B CN 1616833 B CN1616833 B CN 1616833B CN 200310116123 CN200310116123 CN 200310116123 CN 200310116123 A CN200310116123 A CN 200310116123A CN 1616833 B CN1616833 B CN 1616833B
- Authority
- CN
- China
- Prior art keywords
- centrifugal fan
- fan
- framework
- gas collection
- movable vanes
- 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
Links
- 239000011324 bead Substances 0.000 claims description 19
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000003068 static effect Effects 0.000 abstract 4
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of centrifugal fan with static vanes and its fan frame. The centrifugal fan with static vanes includes the first frame, the second frame, a rotating unit, the first moving vane part and the second moving vane part. The second frame comprises a plurality of static vanes, the first moving vane part combined with the rotating unit has the first moving vanes, the second moving vane part combined with the first moving vane part has the second vanes, and the first moving vanes and the second moving vanes are set on the upper and lower sides of the static vanes separately.
Description
Technical field
The present invention is relevant for a kind of centrifugal fan, particularly relevant for a kind of centrifugal fan that is provided with stator blade at its fan frame.
Background technique
General known centrifugal fan (blower) 1 as shown in Figure 1, comprise a housing 10, a motor 20 and a blade structure 30, wherein housing 10 has a suction port 11 and a relief opening (not shown), motor 20 is placed on the pedestal 101 of housing 10, in order to rotate blade structure 30.Blade structure 30 also comprises a wheel hub 31, a base plate 32 and a plurality of movable vane formed thereon 33.Yet because blade structure system directly contacts runner, and the air gap between movable vane is large, and wayward air-flow causes backflow easily, affects radiating efficiency.
Therefore, along with the enhancing efficiency of electrical assembly, in order to promote the radiating efficiency of centrifugal fan, generally be that the mode that increases the runner in its housing increases air output.Yet in limited space, this practice is also infeasible, and causes easily the problems such as air output inequality, noise and air output minimizing to produce.
Another kind of known improving technology then is to increase movable vane number and size, but limited because of on the space, it can with the rotation of moving air flow, can reduce the radiating efficiency of centrifugal fan itself on the contrary.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of centrifugal fan, it increases by one group or above moving-stator blade, to improve blast.
Another object of the present invention is to provide a kind of fan frame of centrifugal fan, which is provided with one group of above stator blade, with the air-flow correcting.
According to the present invention, a kind of centrifugal fan that contains stator blade is provided, it comprises fan frame and a blade structure, its middle fan frame has a plurality of stator blades, from a wind inlet of this fan frame extend internally a wall and and fan frame wall between form a gas collection runner, blade structure is arranged in the fan frame, and has a plurality of the first movable vanes and a plurality of the second movable vane, and the first movable vane and the second movable vane lay respectively at the both sides of stator blade.
In a preferred embodiment, the fan frame has a gas collection runner, a wind inlet and an exhaust outlet, and the first movable vane is positioned near the wind inlet, and has respectively an inclined-plane in the side near wind inlet, the gas collection runner has an ingress, and the second movable vane is positioned near the ingress.
Again, blade structure has a bead near the ingress, it extends to gas collection runner direction, and blade structure axially on, the runner height of the height of gas collection runner and moving-stator blade is partially or completely overlapping, and the sectional area of gas collection runner is equal in fact the sectional area of exhaust outlet.
In another preferred embodiment, the fan frame comprises the first framework and the second framework, and the first framework is in order to arrange blade structure.And the second framework is combined with the first framework, and stator blade is formed on the second framework.
Again, centrifugal fan also comprises a slewing gear, and it is arranged on the first framework, and in order to drive blade structure.
In another preferred embodiment, blade structure comprises the first moving vane parts and the second moving vane parts, and the first moving vane parts has the first movable vane, and the second moving vane parts is combined with the first moving vane parts, and has the second movable vane and bead.
Again in the present invention, provide another kind to contain the centrifugal fan of stator blade, it comprises the first framework, the second framework, slewing gear, the first moving vane parts and the second moving vane parts, the second framework is provided with a plurality of stator blades, and have a wall, between this first framework and this second framework, be formed with a gas collection runner towards this first framework extension; Slewing gear is arranged on the first framework, and the first moving vane parts is combined with slewing gear, and has a plurality of the first movable vanes, and the second moving vane parts is combined with the first moving vane parts, and has a plurality of the second movable vanes, and wherein the first movable vane and the second movable vane lay respectively at the both sides of stator blade.
Again in the present invention, provide another kind to contain the centrifugal fan of stator blade, it comprises fan frame and a blade structure, its middle fan frame is provided with a plurality of stator blades, and has a gas collection runner, and have a wall and between this wall and this fan frame wall, form a gas collection runner to inner extension of this fan frame, and the gas collection runner has an ingress, blade structure is arranged in the fan frame, and have a bead, a plurality of the first movable vane and a plurality of the second movable vane, the first movable vane and the second movable vane lay respectively at the both sides of stator blade, and bead is positioned near the ingress and to gas collection runner direction and extends.
Again in the present invention, provide another kind to contain the centrifugal fan of stator blade, it comprises fan frame and a blade structure, its middle fan frame is provided with a plurality of stator blades, and having a wall extends in this fan frame, and fan formation one gas collection runner between the frame wall at this wall and this, blade structure is arranged in the fan frame, and have a plurality of the first movable vanes and a plurality of the second movable vane, the first movable vane and the second movable vane lay respectively at the both sides of stator blade, and blade structure axially on, the height of gas collection runner and the height of moving-stator blade are partially or completely overlapping.
Again in the present invention, provide a kind of centrifugal fan that contains stator blade, comprising: a fan frame, have at least one group of stator blade, from a wind inlet of this fan frame extend internally a wall and and fan frame wall between formation one gas collection runner; And a blade structure, be arranged in this fan frame, and have at least one group of movable vane.
Again in the present invention, provide a kind of fan frame, it is applicable in the centrifugal fan, and centrifugal fan has a blade structure, and the fan frame is characterised in that: be provided with a plurality of stator blades in the one side in the face of blade structure.And this fan frame has a wind inlet, and this wind inlet wall that extends internally out certainly, is formed with a gas collection runner between this wall and this fan frame wall.
For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended diagram, be described in detail below.
Description of drawings
Fig. 1 is the schematic representation of known centrifugal fan;
Fig. 2 a is the three-dimensional exploded view that contains the centrifugal fan of stator blade among the present invention;
Fig. 2 b is the combination stereogram of the centrifugal fan shown in Fig. 2 a;
Fig. 3 a is the sectional drawing along the line 3a-3a among Fig. 2 b;
Fig. 3 b is the sectional drawing along the line 3b-3b among Fig. 2 b; And
Fig. 4 is the centrifugal fan of this case and the air pressure air flow characteristic comparison diagram of known centrifugal fan.
Embodiment
Fig. 2 a, 2b, 3a, 3c have shown the centrifugal fan 2 that contains stator blade of the present invention, it comprises fan frame 100, a blade structure 200 and a slewing gear 300, wherein slewing gear 300 is shown in Fig. 3 a, comprise the assemblies such as main shaft, rotor, stator, bearing, circuit board, fastener, because the slewing gear 300 among the present invention is identical with known slewing gear, description is omitted at this, and do not indicate especially the symbol of above-mentioned each assembly.
Again, shown in Fig. 2 b, fan frame 100 has a wind inlet 150 and an exhaust outlet 160, and general shown in Fig. 3 a, forms a gas collection runner (or claiming air reservoir) 140 between the first framework 110 of fanning frame 100 and the second framework 120; Again, with reference to figure 3b, the width of gas collection runner 140 is not homogeneous, but more near exhaust outlet 160, its gas collection runner 140 width are larger, and the width of exhaust outlet 160 is designed based on this gas collection runner 140, that is, shown in the imaginary line F of Fig. 3 b as, the width of exhaust outlet 160 is formed by the gas collection runner 140 interior Zhou Yuyi both standardized tangent line of fixed position, can make by this blast in the gas collection runner 140 more average, and can improve the radiating efficiency of centrifugal fan 100.
Will be appreciated that the sectional area of gas collection runner 140 can be equal in fact the sectional area of exhaust outlet 160, can avoid by this air-flow because of the change of area, and so that the work doing efficiency reduction.
Again, in diagram, the second moving vane parts 220 and the first moving vane parts 210 are combined by the mode of engaging, but are not limited to this, also can utilize other mode combination, such as fusion etc.; In addition, in the sectional drawing of Fig. 3 a, the joint line of the joint line of the second moving vane parts 220 and the first moving vane parts 210, the first framework 110 and the second framework all is omitted.
The first movable vane 230 is positioned near the wind inlet 150, and can form an inclined-plane 230a in the side near wind inlet 150, can be added to by this work done area in air port 150; The second movable vane 240 is positioned near the ingress 141 (shown in Fig. 3 a) of gas collection runner 140, and and the first movable vane 230 lay respectively at the up and down both sides of stator blade 130.
In addition, with reference to figure 2a, 3a, the second framework 120 forms a wall 121, and it is the extension of 141 directions to the ingress, be divided into two with the runner that will fan in the frame 100, that is, form gas collection runner 140 and air by the runner of moving-stator blade.
Again, because the second moving vane parts 220 is provided with to the bead 221 of rising to the bait, can successfully upwards introduce air-flow in the gas collection runner 140, therefore blade structure 200 axially (that is, slewing gear 300 axially) on, the height of gas collection runner 140 can be overlapping partially or completely with the height of moving-stator blade runner, can make by this centrifugal fan 2 integral miniaturization.
Fig. 4 is the centrifugal fan of this case and the air pressure air flow characteristic comparison diagram of known centrifugal fan shown in Figure 1, wherein transverse axis is that air quantity, the longitudinal axis are blast, and solid line represents the airflow pressure relation curve of the centrifugal fan of this case, the airflow pressure relation curve that dotted line represents known centrifugal fan; As shown in Figure 4, under identical air quantity, the centrifugal fan of this case can obtain larger blast, so this case can reach desired effect really.
As mentioned above, because the present invention has increased by one group of moving-stator blade above original flabellum of centrifugal fan, can effectively improve by this blast of centrifugal fan.
Again, in diagram, only increase by one group of moving-stator blade in the centrifugal fan of the present invention, but be not limited to this, can increase according to circumstances one group of above movable vane or stator blade; For example, can form two groups of stator blades at two-way wind input type centrifugal fan, that is, two wind inlet places at the fan frame can form respectively a plurality of the first stator blades and a plurality of the second stator blade, and in blade structure except above-mentioned the first movable vane and the second movable vane are set, more can set up another group movable vane (a plurality of the 3rd movable vane), and as above-mentioned stator blade and movable vane system as the above-mentioned embodiment, be to arrange in staggered mode.
It should be noted that centrifugal fan Design Conception of the present invention adopts one group or above movable vane or stator blade, utilize the stator blade set up on the fan frame with the air-flow correcting preventing cyclone, and then reach the purpose that increases blast and strengthen radiating effect.
Although the present invention discloses as above with preferred embodiment; so it is not to limit the present invention; anyly be familiar with the art person; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (43)
1. centrifugal fan that contains stator blade comprises:
One fan frame forms a plurality of stator blades it on, this fan frame has a wind inlet and an exhaust outlet, from an extend internally wall and at this wall and fan formation one gas collection runner between the frame wall of this wind inlet of this fan frame; And
One blade structure is arranged in this fan frame, and has a plurality of the first movable vanes and a plurality of the second movable vane;
This gas collection runner has an ingress, and this wall radially extends to this ingress direction.
2. centrifugal fan as claimed in claim 1 is characterized in that, these first movable vanes are positioned near this wind inlet.
3. centrifugal fan as claimed in claim 2 is characterized in that, these second movable vanes are positioned near this ingress.
4. centrifugal fan as claimed in claim 3 is characterized in that, this blade structure has a bead near this ingress, and this bead is extended to this gas collection runner direction.
5. centrifugal fan as claimed in claim 3 is characterized in that, forms the runner of this gas collection runner and these movable vanes and stator blade in this fan frame.
6. centrifugal fan as claimed in claim 3 is characterized in that, the sectional area of this gas collection runner is equal in fact the sectional area of this exhaust outlet.
7. centrifugal fan as claimed in claim 2 is characterized in that, these first movable vanes have respectively an inclined-plane in the side near this wind inlet.
8. centrifugal fan as claimed in claim 1 is characterized in that, this fan frame comprises:
The first framework is in order to arrange this blade structure; And
The second framework is combined with this first framework, and wherein these stator blades are formed on this second framework.
9. centrifugal fan as claimed in claim 8 is characterized in that, also comprises:
One slewing gear is arranged on this first framework, in order to drive this blade structure.
10. centrifugal fan as claimed in claim 1 is characterized in that, this blade structure comprises:
The first moving vane parts has these the first movable vanes; And
The second moving vane parts is combined with this first moving vane parts, and has these the second movable vanes.
11. centrifugal fan as claimed in claim 10 is characterized in that, has a bead on this second moving vane parts.
12. centrifugal fan as claimed in claim 1 is characterized in that, these first movable vanes and these second movable vanes lay respectively at the both sides of these stator blades.
13. a centrifugal fan that contains stator blade, it comprises:
The first framework;
The second framework forms a plurality of stator blades on it, a wind inlet of this second framework wall that extends internally certainly, and between this first framework and this second framework, be formed with a gas collection runner;
Slewing gear is arranged on this first framework;
The first moving vane parts is combined with this slewing gear, and has a plurality of the first movable vanes; And
The second moving vane parts is combined with this first moving vane parts, and has a plurality of the second movable vanes, and wherein these first movable vanes and these second movable vanes lay respectively at the both sides of these stator blades;
One exhaust outlet;
Wherein, this gas collection runner has an ingress, and this wall radially extends to this ingress direction.
14. centrifugal fan as claimed in claim 13 is characterized in that, this second framework is positioned near this wind inlet.
15. centrifugal fan as claimed in claim 14 is characterized in that, these first movable vanes form an inclined-plane in the side near this wind inlet respectively.
16. centrifugal fan as claimed in claim 15 is characterized in that, this second moving vane parts is forming a bead near this ingress, and this bead is extended to this gas collection runner direction.
17. centrifugal fan as claimed in claim 15 is characterized in that, wall extends to this ingress direction, to form the runner of this gas collection runner and these movable vanes and stator blade in this fan frame.
18. a centrifugal fan that contains stator blade, it comprises:
One fan frame, form a plurality of stator blades on it, this fan frame has a wind inlet and an exhaust outlet, and this wind inlet from this fan frame extends inward a wall and form a gas collection runner between this wall and this fan frame wall, and this gas collection runner has an ingress, and this wall radially extends to this ingress direction; And
One blade structure, be arranged in this fan frame, and have a bead, a plurality of the first movable vane and a plurality of the second movable vane, wherein these first movable vanes and these second movable vanes lay respectively at the both sides of these stator blades, and this bead is positioned near this ingress and to this gas collection runner direction extension.
19. centrifugal fan as claimed in claim 18 is characterized in that, these first movable vanes are positioned near this wind inlet.
20. centrifugal fan as claimed in claim 19 is characterized in that, these first movable vanes have respectively an inclined-plane in the side near this wind inlet.
21. centrifugal fan as claimed in claim 19 is characterized in that, the sectional area of this gas collection runner is equal in fact the sectional area of this exhaust outlet.
22. centrifugal fan as claimed in claim 18 is characterized in that, these second movable vanes are positioned near this ingress.
23. centrifugal fan as claimed in claim 18 is characterized in that, this wall extends to this ingress direction, to form the runner of this gas collection runner and these movable vanes and stator blade in this fan frame.
24. centrifugal fan as claimed in claim 18 is characterized in that, this fan frame comprises:
The first framework is in order to arrange this blade structure in the inner; And
The second framework is combined with this first framework, and wherein these stator blades are formed on this second framework.
25. centrifugal fan as claimed in claim 24 is characterized in that, also comprises:
One slewing gear is arranged on this first framework, in order to drive this blade structure.
26. centrifugal fan as claimed in claim 18 is characterized in that, this blade structure comprises:
The first moving vane parts has these the first movable vanes; And
The second moving vane parts is combined with this first moving vane parts, and has these the second movable vanes.
27. centrifugal fan as claimed in claim 26 is characterized in that, this bead is formed on this second moving vane parts.
28. a centrifugal fan that contains stator blade, it comprises:
One fan frame, a plurality of stator blades of formation it on, this fan frame has a wind inlet and an exhaust outlet, and this wind inlet of this fan frame wall that extends internally certainly, and is formed with a gas collection runner between this wall and this fan frame wall; And
One blade structure is arranged in this fan frame, and has a plurality of the first movable vanes and a plurality of the second movable vane, and wherein these first movable vanes and these second movable vanes lay respectively at the both sides of these stator blades; Wherein, this gas collection runner has an ingress, and this wall radially extends to this ingress direction.
29. centrifugal fan as claimed in claim 28 is characterized in that, these first movable vanes are positioned near this wind inlet.
30. centrifugal fan as claimed in claim 29 is characterized in that, the sectional area of this gas collection runner is equal in fact the sectional area of this exhaust outlet.
31. centrifugal fan as claimed in claim 29 is characterized in that, these first movable vanes have an inclined-plane in the side near this wind inlet respectively.
32. centrifugal fan as claimed in claim 28 is characterized in that, these second movable vanes are positioned near this ingress.
33. centrifugal fan as claimed in claim 32 is characterized in that, this blade structure is forming a bead near this ingress, and this bead is extended to this gas collection runner direction.
34. centrifugal fan as claimed in claim 32 is characterized in that, this wall extends to this ingress direction, to form the runner of this gas collection runner and these movable vanes and stator blade in this fan frame.
35. centrifugal fan as claimed in claim 28 is characterized in that, this fan frame comprises:
The first framework is in order to arrange this blade structure; And
The second framework is combined with this first framework, and wherein these stator blades are formed on this second framework.
36. centrifugal fan as claimed in claim 35 is characterized in that, also comprises:
One slewing gear is arranged on this first framework, in order to drive this blade structure.
37. centrifugal fan as claimed in claim 28 is characterized in that, this blade structure comprises:
The first moving vane parts has these the first movable vanes; And
The second moving vane parts is combined with this first moving vane parts, and has these the second movable vanes.
38. centrifugal fan as claimed in claim 37 is characterized in that, forms a bead on this second moving vane parts.
39. a centrifugal fan that contains stator blade comprises:
One fan frame forms a plurality of stator blades it on, this fan frame has a wind inlet and an exhaust outlet, from an extend internally wall and at this wall and fan formation one gas collection runner between the frame wall of this wind inlet of this fan frame; And
One blade structure is arranged in this fan frame, and has at least one group of movable vane wherein, and this gas collection runner has an ingress, and this wall radially extends to this ingress direction.
40. centrifugal fan as claimed in claim 39 is characterized in that, the arrangement that is crisscross arranged of this stator blade and this movable vane.
41. a fan frame is applicable in the centrifugal fan, wherein this centrifugal fan has a blade structure, and should form a plurality of stator blades in the one side in the face of this blade structure by the fan frame; And this fan frame has a wind inlet and an exhaust outlet, and this wind inlet wall that extends internally out certainly, is formed with a gas collection runner between this wall and this fan frame wall;
Wherein, this gas collection runner has an ingress, and this wall radially extends to this ingress direction.
42. fan frame as claimed in claim 41 is characterized in that, also comprises:
The first framework is in order to accommodating this blade structure; And
The second framework is combined with this first framework, and wherein these stator blades are formed on this second framework.
43. fan frame as claimed in claim 42 is characterized in that, this second framework forms this wall, and its ingress direction to this gas collection runner is extended, to form the runner of this gas collection runner and these stator blades in this fan frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310116123 CN1616833B (en) | 2003-11-11 | 2003-11-11 | Centrifugal fan with stable vane and its fan frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310116123 CN1616833B (en) | 2003-11-11 | 2003-11-11 | Centrifugal fan with stable vane and its fan frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1616833A CN1616833A (en) | 2005-05-18 |
| CN1616833B true CN1616833B (en) | 2013-01-23 |
Family
ID=34760588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310116123 Expired - Lifetime CN1616833B (en) | 2003-11-11 | 2003-11-11 | Centrifugal fan with stable vane and its fan frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1616833B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847664A (en) * | 2006-04-07 | 2006-10-18 | 刘昌喆 | Radial cascade air compressor |
| CN105561717B (en) * | 2015-10-16 | 2017-09-29 | 珠海精润石化有限公司 | Centrifugal desulphurization system gas-liquid separator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5025629A (en) * | 1989-03-20 | 1991-06-25 | Woollenweber William E | High pressure ratio turbocharger |
| US5188508A (en) * | 1991-05-09 | 1993-02-23 | Comair Rotron, Inc. | Compact fan and impeller |
-
2003
- 2003-11-11 CN CN 200310116123 patent/CN1616833B/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5025629A (en) * | 1989-03-20 | 1991-06-25 | Woollenweber William E | High pressure ratio turbocharger |
| US5188508A (en) * | 1991-05-09 | 1993-02-23 | Comair Rotron, Inc. | Compact fan and impeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1616833A (en) | 2005-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101372987B (en) | Fan vane structure and centrifugal fan having the same | |
| US7740446B2 (en) | Serial fan with a plurality of rotor vanes | |
| JP4099458B2 (en) | Centrifugal fan including stator vanes | |
| CN101451541B (en) | Centrifugal fan | |
| CN1811193B (en) | Blowing device | |
| CN211880253U (en) | Motor structure | |
| KR101817956B1 (en) | Impeller for a blower | |
| CN1616833B (en) | Centrifugal fan with stable vane and its fan frame | |
| CN101975177B (en) | Built-in turbo shaft flow motor type strong fan | |
| US6644918B2 (en) | Axial flow fan motor | |
| CN115342078B (en) | High-efficiency centrifugal fan with module diffusion structure | |
| CN217354846U (en) | Fan and floor cleaning machine | |
| CN110630536A (en) | Fan and electromechanical assembly and method thereof | |
| KR100422704B1 (en) | Axial fan with Auxiliary impeller | |
| CN100380000C (en) | Casing seat of axial-flow radiating fan | |
| CN112752908A (en) | Air circulator with double rotary wings | |
| CN2393256Y (en) | Double-fan motor | |
| CN1940308B (en) | Fan and its frame | |
| JP3938252B2 (en) | Multi-blade blower | |
| CN221003204U (en) | Brushless condensing fan | |
| CN219012969U (en) | Small centrifugal impeller and portable fan | |
| CN215719588U (en) | Multipurpose novel cross-flow fan | |
| CN211405762U (en) | Heat dissipation brushless motor | |
| CN218449709U (en) | Forward and reverse rotation brushless motor | |
| CN219654913U (en) | Circular centrifugal axial flow fan |
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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |
|
| CX01 | Expiry of patent term |