CN202118011U - Fan without blades - Google Patents
Fan without blades Download PDFInfo
- Publication number
- CN202118011U CN202118011U CN2011202391478U CN201120239147U CN202118011U CN 202118011 U CN202118011 U CN 202118011U CN 2011202391478 U CN2011202391478 U CN 2011202391478U CN 201120239147 U CN201120239147 U CN 201120239147U CN 202118011 U CN202118011 U CN 202118011U
- Authority
- CN
- China
- Prior art keywords
- fan
- air
- blower fan
- wind groove
- airflow
- 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
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a fan without blades. Air is absorbed into a fan stand air channel from an air filter casing by a fan body, then transmitted to an annual air groove with a wing-shaped cross section through the air channel, and finally ejected out from an air outlet at a wing-shaped front edge of the annual air groove. Ejected airflow flows by on the inner surface of the annular air groove in an attached manner and drives air around the fan body to flow through an opening enclosed by the annular air groove, and accordingly stable and continuous airflow is generated. The airflow includes not only main airflow generated by the fan body, but also auxiliary airflows from the periphery of the fan body driven by the main airflow, and the amount of the air generated by the fan body is enlarged effectively, namely work efficiency of the fan is effectively improved. The blades and a blade cover are omitted, the structure of the fan is simple and compact, both production cost and complexity of working procedures are effectively reduced, decoration or adaptability of placement of the fan is also greatly improved, and the fan can be cleaned more simply and easily.
Description
Technical field
The utility model relates to the fan technical field, especially is applicable to indoor desk-top or floor model fan.
Background technique
Traditional indoor bracker fan is directly to produce air stream by the blade that rotates; Air stream blows on people's the body, lets the people feel nice and cool, so the blade of this fan must expose; Blade is to be isolated from the outside through blade shroud, hurts the people in case the uppermost leaf sheet rotates mistiming.Very inconvenient when also having the cleaning of fan blade of this structure.Air stream is to be produced by blade merely, and by the power of motor decision, its working efficiency receives certain restriction to the power of air stream fully.
The model utility content
The technical problem that the utility model will solve provides a kind of fan that does not have exposure of blade.
The technological scheme that adopts for solving the problems of the technologies described above: a kind of no blade fan; Comprise a base, but the blower fan seat of swing angle is installed on the base, it is characterized in that: establish a holding cavity in the said blower fan seat; In the said holding cavity motor is installed; The outer wall of said holding cavity is formed with air passageways, and the impeller that is installed on the machine shaft places in the air passageways of holding cavity below, and the bottom of said blower fan seat is equipped with the air filter bowl as the blower fan wind inlet; The top of said blower fan seat is equipped with the annular wind groove with airfoil cross-section; In the middle of the internal surface of convex surface looping wind groove of aerofoil profile, offer the exhaust outlet of swinging to annular wind groove internal surface along the aerofoil profile leading edge of annular wind groove, said annular wind groove is communicated with the interior air passageways of blower fan seat.
On the basis of the above, be equipped with on the said base in order to control the rotary switch of motor.
Adopt the beneficial effect that the utility model brought: the utility model does not have blade fan and is drawn into air in the blower fan seat air passageways from the air filter bowl by blower fan; Be sent to annular wind groove by air passageways again; At last the exhaust outlet by the aerofoil profile leading edge of annular wind groove ejects; The internal surface that the air-flow that ejects is pressed close to annular wind groove flows, and drives the fan ambient air and flow through the opening that is surrounded by annular wind groove, thereby produces the air stream of steady and continuous.Air stream has not only comprised the main air flow that is produced by blower fan, also comprised by main air flow drive come from around the fan from air-flow, the air quantity that blower fan produces is effectively amplified.That is to say that the working efficiency of fan is effectively improved.Owing to cancelled blade and blade shroud; The structure of the fan compact that also becomes, no matter the complexity of cost of production or operation is all effectively reduced; And the ornamental or adaptability that fan is put also greatly improves, and the cleaning of fan also becomes simple easier.
Description of drawings
Fig. 1 does not have the overall structure schematic representation of blade fan for the utility model;
Fig. 2 does not have the cross-sectional view of blade fan for the utility model.
Embodiment
Like Fig. 1, shown in 2, a kind of no blade fan comprises a base 1, but the blower fan seat 2 of swing angle is installed on the base 1.Establish a holding cavity 21 in the blower fan seat 2, motor 3 is installed in the holding cavity 21.The outer wall of holding cavity 21 is formed with air passageways 22, and the impeller 4 that is installed in motor 3 rotating shafts places in the air passageways 22 of holding cavity 21 belows.The bottom of blower fan seat 2 is equipped with the air filter bowl 5 as the blower fan wind inlet.The top of blower fan seat 2 is equipped with the annular wind groove 6 with airfoil cross-section; The internal surface of the convex surface 61 looping wind grooves 6 of central aerofoil profile; Aerofoil profile leading edge along annular wind groove 6 offers the exhaust outlet 62 of swinging to annular wind groove 6 internal surfaces, and annular wind groove 6 is communicated with blower fan seat 2 interior air passagewayss 22.Rotary switch 7 in order to control motor 3 is installed on the base 1.
The no blade fan of present embodiment is drawn into air in blower fan seat 2 air passagewayss 22 from air filter bowl 5 by blower fan; Be sent to annular wind groove 6 by air passageways 22 again; At last the exhaust outlet 62 by the aerofoil profile leading edge of annular wind groove 6 ejects; The internal surface that the air-flow that ejects is pressed close to annular wind 6 grooves flows, and drives the fan ambient air and flow through the opening 63 that is surrounded by annular wind groove 6, thereby produces the air stream of steady and continuous.Air stream has not only comprised the main air flow that is produced by blower fan, also comprised by main air flow drive come from around the fan from air-flow, the air quantity that blower fan produces is effectively amplified.
Claims (2)
1. no blade fan; Comprise a base, but the blower fan seat of swing angle is installed on the base, it is characterized in that: establish a holding cavity in the said blower fan seat; In the said holding cavity motor is installed; The outer wall of said holding cavity is formed with air passageways, and the impeller that is installed on the machine shaft places in the air passageways of holding cavity below, and the bottom of said blower fan seat is equipped with the air filter bowl as the blower fan wind inlet; The top of said blower fan seat is equipped with the annular wind groove with airfoil cross-section; In the middle of the internal surface of convex surface looping wind groove of aerofoil profile, offer the exhaust outlet of swinging to annular wind groove internal surface along the aerofoil profile leading edge of annular wind groove, said annular wind groove is communicated with the interior air passageways of blower fan seat.
2. a kind of no blade fan as claimed in claim 1 is characterized in that: the rotary switch in order to the control motor is installed on the said base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202391478U CN202118011U (en) | 2011-07-08 | 2011-07-08 | Fan without blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202391478U CN202118011U (en) | 2011-07-08 | 2011-07-08 | Fan without blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202118011U true CN202118011U (en) | 2012-01-18 |
Family
ID=45459080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202391478U Expired - Fee Related CN202118011U (en) | 2011-07-08 | 2011-07-08 | Fan without blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202118011U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720681A (en) * | 2012-06-01 | 2012-10-10 | 张钜标 | Bladeless fan with folding air outlet component |
| CN103375446A (en) * | 2012-04-29 | 2013-10-30 | 任文华 | Fan and base for fan |
| CN103573591A (en) * | 2012-08-10 | 2014-02-12 | 任文华 | Fan |
-
2011
- 2011-07-08 CN CN2011202391478U patent/CN202118011U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375446A (en) * | 2012-04-29 | 2013-10-30 | 任文华 | Fan and base for fan |
| CN102720681A (en) * | 2012-06-01 | 2012-10-10 | 张钜标 | Bladeless fan with folding air outlet component |
| CN103573591A (en) * | 2012-08-10 | 2014-02-12 | 任文华 | 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20130708 |