CN2048532U - Fan cover - Google Patents
Fan cover Download PDFInfo
- Publication number
- CN2048532U CN2048532U CN 88221505 CN88221505U CN2048532U CN 2048532 U CN2048532 U CN 2048532U CN 88221505 CN88221505 CN 88221505 CN 88221505 U CN88221505 U CN 88221505U CN 2048532 U CN2048532 U CN 2048532U
- Authority
- CN
- China
- Prior art keywords
- fan
- air
- fan guard
- wind
- braided
- 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.)
- Withdrawn
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a fan cover for conveniently regulating the wind strength of the electric fan, which is braided by nylon yarn in the shape of tuck net. One side of the mouth is elastic, and the outer part of the mouth has a plurality of meshes, among which is the densely-braided choke area which reflexes the colliding air moleculars and further affects other molecular movement to decrease the number and the speedof the air molecules through the fan guard. In addition, the wind strength can be regulated by altering the area ratio of the meshes and choke area to make the wind soft.
Description
The utility model relates to a kind of fan guard that can weaken electric fan pectinid intensity.
In order to adapt to the occasion of different temperature, general electric fan is provided with arrangements for speed regulation, no matter this arrangements for speed regulation adopt stepless speed regulation still is the stepping step speed regulation, all can only in small range, regulate, be difficult to the air quantity of electric fan is transferred to very little degree, even the making alive regulator also is difficult to accomplish, always because motor has certain threshold voltage and rotating speed.In the ward or in the bedroom, always wish that air quantity of fan is little and soft night, adopt non-electric mean of calculating more suitable for this reason.
The purpose of this utility model is that a kind of fan guard that can weaken the electric fan air quantity will be provided, and the safety guard outside that this cover covers on electric fan can make pectinid intensity weaken and become soft.
For achieving the above object, the fan guard that the utility model proposes is based on following principle, electric fan is that the air that the blade by high speed rotating drives blade the place ahead travels forward, produce draught head simultaneously at the blade rear, the replenish air of blade back is come in, so just formed the orientation movement of air continuously, this shows that will reduce air flow amount (or speed) has two approach, the one, the rotating speed of reduction blade, the 2nd, weaken the exchange of blade front and back air, make it to be difficult to form high draught head, thereby reducing speed air flow is the intensity of wind, the utility model is just according to the latter, cover on the front of the blade of fan with a cover, this cover is made of the choke zone between a series of mesh and mesh, air can only be by mesh and outside exchange, impinge upon air molecule on the choke zone by diffusion, their reflection can influence the motion of other air molecule, other air molecule is slowed down or break-in, the result is the air and extraneous exchange capacity that has significantly reduced in the cover, the flow that is air reduces, and monsoon intensity weakens, simultaneously because diffusion effect wind also becomes soft.
Below by embodiment and accompanying drawing thereof the utility model is done specific descriptions.
Fig. 1 is the structural representation according to the fan guard that the utility model proposes.
As shown in Figure 1, the fan guard 1 likeness in form string bag, it forms for the nylon wire braiding, many mesh 2 are arranged on it, the shape of mesh 2 is arbitrarily, as garden shape, square or triangle etc., and the size of their size and density decision air quantity, zone between mesh is choke zone 3, the elastic edge 4 that the oral area of this cover has an elastic cloth to do.
The user covers on fan guard 1 outside the protective housing of electric fan, owing to have elastic edge 4, it can be close on the protective housing, can not enter into blade space and go.
The function of the adjusting monsoon intensity of this fan guard mainly is that the diffusion of the 3 pairs of air molecules in choke zone is formed, thereby regulates mesh area and choke region area ratio, can change the strong and weak degree of this fan guard to wind.
Claims (2)
1, a kind of fan guard is characterized in that it comprises choke district 3 between a series of mesh 2, the mesh 2 and the oral area 4 that has elastic edge.
2, fan guard according to claim 1 is characterized in that this fan guard is formed by the nylon wire braiding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88221505 CN2048532U (en) | 1988-12-30 | 1988-12-30 | Fan cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88221505 CN2048532U (en) | 1988-12-30 | 1988-12-30 | Fan cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2048532U true CN2048532U (en) | 1989-11-29 |
Family
ID=4853518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88221505 Withdrawn CN2048532U (en) | 1988-12-30 | 1988-12-30 | Fan cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2048532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106942169A (en) * | 2017-04-11 | 2017-07-14 | 四川省农业科学院蚕业研究所 | It is a kind of from Shu Shican with covering cluster net |
-
1988
- 1988-12-30 CN CN 88221505 patent/CN2048532U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106942169A (en) * | 2017-04-11 | 2017-07-14 | 四川省农业科学院蚕业研究所 | It is a kind of from Shu Shican with covering cluster net |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |