CN2189224Y - fan-shaped ceiling fan - Google Patents
fan-shaped ceiling fan Download PDFInfo
- Publication number
- CN2189224Y CN2189224Y CN 93213374 CN93213374U CN2189224Y CN 2189224 Y CN2189224 Y CN 2189224Y CN 93213374 CN93213374 CN 93213374 CN 93213374 U CN93213374 U CN 93213374U CN 2189224 Y CN2189224 Y CN 2189224Y
- Authority
- CN
- China
- Prior art keywords
- fan
- angle
- ceiling fan
- blade
- horizontal line
- 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
- 238000007664 blowing Methods 0.000 description 14
- 241000883990 Flabellum Species 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The fan-shaped ceiling fan is structurally characterized in that blades of the fan-shaped ceiling fan form an upward oblique angle with a horizontal line, the size of the oblique angle is an angle X in tan X of the ratio of the rotating radius of the blades to the distance from the center of the fan to a wind surface required by the fan, the angle is called a 'critical' angle, and the fan-shaped ceiling fan can be designed according to the 'critical' angle: (1) the fan-shaped ceiling fan is characterized in that blades forming a critical angle with a horizontal line are respectively added in the middle of 2 blades of the original horizontal line, and the wind area of the fan-shaped ceiling fan is 4 times that of the original horizontal line; (2) the blades of the ceiling fan are all at an upward oblique angle (within a critical angle) with the horizontal line, and the wind area of the ceiling fan can be increased by 2 times compared with the blades of the original horizontal line.
Description
The utility model belongs to a kind of household electrical appliances, relates to the device of ceiling fan blade.
Present known ceiling fan blade is parallel with level, its blowing area is the area of a circle of radius to the ceiling fan center with blade end only, seem narrow, other has a kind of revolvable oscillating ceiling fan, can be fan to wideer place, but the wind-engaging place is wind-engaging continuously, still can not satisfy people's needs.
The purpose of this utility model provides a kind of blowing area 3-4 ceiling fan doubly that can increase under the condition that does not increase ceiling fan blade.
The purpose of this utility model is achieved in that and makes ceiling fan blade become one to be the upwards oblique angle of angle item with the ceiling fan center with horizontal plane, and the size at this oblique angle is a blade end to the horizontal line length at ceiling fan center and ceiling fan center to the X angle of ratio in tanX of the perpendicular distance of need wind face.Theoretical proof is as follows: as shown in Figure 1, O is the ceiling fan center, OA is the horizontal line length of center O to blade end, crosses the O point and remake OA ' and OA formation ∠ AOA '=X above OA, crosses O and makes plumb line OO ' again, hand over Horizon in O ', cross A ' and do A ' C ⊥ OA ' friendship horizon, cross O and remake OB|A ' C friendship O ' C, establish OA=OA '=a in B in C, O ' B=b, the blowing area S=π a of former horizontal line blade OA
2, Sector like hanging fan becomes the blowing area S '=π O ' C of X angle blade with horizontal line
2-π b
2O ' C=O ' B+BC among the figure makes BC ' ⊥ A ' C and hands over A ' C in C ' BC '=OA '=a BC＞a then so cross B, even if O ' C＞b+a O ' C=b+a, S '=π (a+b)
2-π b
2=π a
2+ 2 π ab+ π b
2-π b
2=π a
2+ 2 π ab prove more than the blowing area 2 π ab of blowing area greater than existing ceiling fan of Sector like hanging fan thus.As for the size at oblique angle, according to the length of ceiling fan blade and ceiling fan overhead height and people's needs decide, generally be the ceiling fan height, little this in oblique angle is because the oblique angle equals to fan the angle O ' OB less than wind.Oblique angle AOA ' among [proof] Fig. 1=AOB=90 °-∠ of ∠ A ' OB-∠ AOB(∵ OB|A ' C)
∠BOO′＝∠AOO′－∠AOB＝90°－∠AOB（∵AO⊥OO′）
So ∠ AOA '=∠ O ' OB.
The ceiling fan height, the area of a circle that the cone angle that equates with the oblique angle is drawn ground is just big, this area of a circle can't be fanned wind, it is too big that people do not wish can't blow the place of wind under ceiling fan in reality, the maximum blowing area that can not surpass former ceiling fan, this just has a limit (referring to angle), because be former horizontal blade ceiling fan blowing area border, so this angle claims " critical " angle again.This " critical " angle is exactly ceiling fan center to the blade length of not holding with the ceiling fan center to the ratio a of the height on ground than the X angle of h in tanX.Because this moment b=a, according to the above S '=π a
2+ 2 π ab=3 π a
2, be 3 times of former horizontal blade ceiling fan blowing area, in this critical angle (O °＜x≤X) can design on demand that blade is all the same to become a blade that makes progress the oblique angle, (its blowing area π a with horizontal line
2+ 2 π ab) the various ceiling fans of large, medium and small type.Because small-sized ceiling fan is overhead nearer, for the sake of security, the blade rotation circular diameter is provided with a conical safety sheathing that is formed by connecting by steel wire circular coil and straight line at 20-60 centimetre of palpus.
According to the above, if ceiling fan blade all equally becomes upwards oblique angle with horizontal line, under ceiling fan, will there be part fanning not wind, if take " critical " angle, fan not the region pectinid area of former horizontal blade just of wind, in order not lose the pectinid area of former horizontal blade ceiling fan, must keep former horizontal blade, in 2 centres of former horizontal blade, all increase the total blowing area S '=π (a+b) of the such ceiling fan of blade that becomes critical angle with horizontal line
2=π (2a)
2=4 π a
2(because of b=a this moment) is 4 times of former horizontal blade blowing area.Principle and actual demand can design large-scale, medium-sized and small-sized Sector like hanging fan in view of the above, connect the short cylindrical shape safety sheathing that forms if the blade rotation diameter at 20-60 centimetre small-sized ceiling fan, must be provided with by circular coil and the thin weighing apparatus of straight line weighing apparatus.
The utility model is because only need be when blade is installed become ceiling fan blade one oblique angle or in the middle of former 2 horizontal blades with horizontal line, set up a blade that becomes critical angle with horizontal line, can realize, simple for production, miscellaneous part is identical with original ceiling fan, flabellum shape and structure can be selected the preferable existing design of effect for use, if will keep time running of former ceiling fan top gear, then must increase electronic rate 2-3 doubly, if can reduce the global design that the leaf line rate request can keep former ceiling fan, only change the flabellum device.Like this through simple reform, (above state) just can obtain 3 times or the 4 extremely effects of wind area, the value of its product also is former valuable 3 times or 4 times, if the net profit of former ceiling fan is 20% of a value of the product, the net profit of producing Sector like hanging fan is 12 times or 16 times of original production net profit.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing: Fig. 1 is the theoretical proof figure that Sector like hanging fan can increase blowing area, and dotted line is represented the boundary line of blowing area among the figure.Fig. 2 be all the same and horizontal line one of ceiling fan blade in critical angle with interior Sector like hanging fan structural drawing.Fig. 3 is 2 centres at the previous level blade, all sets up one and becomes the make progress Sector like hanging fan structural drawing at oblique angle of critical angle with horizontal line.Original 3 horizontal blades among the figure are set up with horizontal line and are become 3 in critical angle blade, have 6 blades.
Claims (5)
1, Sector like hanging fan belongs to a kind of ceiling fan, known ceiling fan blade is parallel with horizontal plane, the ceiling fan blade that is characterised in that of the present utility model becomes one to be the upwards oblique angle on angle top with the ceiling fan center with horizontal plane, be blade end to the horizontal line length at ceiling fan center and ceiling fan center to the angle of ratio X in tanX of the distance of need wind face, this angle claims " critical " angle.
2, Sector like hanging fan according to claim 1 is characterized in that blade is all the same and becomes the oblique angle that makes progress in " critical " angle with horizontal line.
3, Sector like hanging fan according to claim 1 and 2 is characterized in that the blade rotation circular diameter at 20-60 centimetre, and the conical outer cover that forms with circular coil and the sparse linking of straight line is arranged.
4, Sector like hanging fan according to claim 1, it is characterized in that all assigning in 2 centres of previous level blade a slice become with horizontal line " critical " angle to upper blade.
5, according to claim 1 or 4 described Sector like hanging fan, it is characterized in that the blade rotation circular diameter, the short cylindrical shape safety sheathing that forms with circular coil and the sparse linking of straight line is arranged at 20-60 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93213374 CN2189224Y (en) | 1993-05-08 | 1993-05-08 | fan-shaped ceiling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93213374 CN2189224Y (en) | 1993-05-08 | 1993-05-08 | fan-shaped ceiling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2189224Y true CN2189224Y (en) | 1995-02-08 |
Family
ID=33794464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93213374 Expired - Fee Related CN2189224Y (en) | 1993-05-08 | 1993-05-08 | fan-shaped ceiling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2189224Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110953A (en) * | 2014-01-20 | 2018-06-01 | 日本电产株式会社 | Motor |
-
1993
- 1993-05-08 CN CN 93213374 patent/CN2189224Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110953A (en) * | 2014-01-20 | 2018-06-01 | 日本电产株式会社 | Motor |
| CN108110953B (en) * | 2014-01-20 | 2020-06-19 | 日本电产株式会社 | Motor with a stator having a stator core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |