DE2729297A1 - Desk or table top fan - has slots in blades to increase air vol. delivered without increase of speed - Google Patents
Desk or table top fan - has slots in blades to increase air vol. delivered without increase of speedInfo
- Publication number
- DE2729297A1 DE2729297A1 DE19772729297 DE2729297A DE2729297A1 DE 2729297 A1 DE2729297 A1 DE 2729297A1 DE 19772729297 DE19772729297 DE 19772729297 DE 2729297 A DE2729297 A DE 2729297A DE 2729297 A1 DE2729297 A1 DE 2729297A1
- Authority
- DE
- Germany
- Prior art keywords
- increase
- fan
- slot
- blades
- desk
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
Abstract
Description
nachqereichtISubsequently submitted I.
Ventilator zur FrischlufterzeugungFan for generating fresh air
Die Erfindung betrifft einen Ventilator mit Ventilatorflügeln zur Frischlufterzeugung.The invention relates to a fan with fan blades for generating fresh air.
Bekanntlich kann man mit Ventilatoren, die z.B. auf einen Schreibtisch gestellt werden, eine Luftbewegung erzeugen. Man spricht in diesem Zusammenhang auch von Frischlufterzeugung. Bei besonders warmer Umgebungstemperatur reicht die Frischlufterzeugung in vielen Fällen nicht aus. Es ist daher bekannt, die Ventilatoren so auszubilden, daß sich die Drehzahl der Ventilatorflügel stufenweise erhöhen läßt, womit auch die Frischlufterzeugung erhöht wird. Um die Möglichkeit der Erhöhung der Drehzahl der Ventilatorflügel vorzusehen, sind besonders gestaltete Antriebsmotoren für den Ventilator erforderlich. Deshalb sind solche Ventilatoren relativ teuer.As is well known, you can use fans that e.g. Be placed on a desk, create a movement of air. In this context, one also speaks of fresh air generation. at The generation of fresh air is sufficient when the ambient temperature is particularly warm in many cases does not work out. It is therefore known to design the fans so that the speed of the fan blades can be increased gradually, which also increases the fresh air production. To the possibility of increasing the speed To provide the fan blades, specially designed drive motors are required for the fan. That's why such fans are relatively expensive.
Der Erfindung liegt die Aufgabe zugrunde, eine Erhöhung der Frischlufterzeugung zu erreichen, ohne daß hierzu im Vergleich zu den bekannten Ventilatoren eine Erhöhung der Drehzahl der Ventilatorflügel erforderlich ist.The invention is based on the object of increasing the generation of fresh air without making a comparison to the known fans an increase in the speed of the fan blades is required.
Zur Lösung dieser Aufgabe ist bei der Erfindung vorgesehen, daß die Ventilatorflügel mit schlitzförmigen öffnungen versehen sind. To solve this problem, the invention provides that the fan blades are provided with slot-shaped openings .
Durch die schlitzförmigen öffnungen in den Ventilatorflügeln wird in besonderem Maße ein "Zerhacken" der Luft erreicht, was dazu führt, daß eine erhöhte Frischlufterzeugung erreicht wird. Im Einklang damit wird also die Leistungsfähigkeit des Ventilators erhöht. Due to the slot-shaped openings in the fan blades, a "chopping up" of the air is achieved to a particular degree, which leads to the fact that an increased fresh air production is achieved. The performance of the Fan increased.
809682/0297809682/0297
Die schlitzförmigen Öffnungen sind zweckmäßig in Längsrichtung der Ventilatorflügel angeordnet. In vorteilhafter Weise können die schlitzförmigen Öffnungen aber auch quer oder schräg zur Längsrichtung der Ventilatorflügel angeordnet sein.The slot-shaped openings are expediently in the longitudinal direction the fan blades arranged. Advantageously, the slot-shaped openings can also be transverse or inclined be arranged to the longitudinal direction of the fan blades.
809882/0297809882/0297
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772729297 DE2729297A1 (en) | 1977-06-29 | 1977-06-29 | Desk or table top fan - has slots in blades to increase air vol. delivered without increase of speed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772729297 DE2729297A1 (en) | 1977-06-29 | 1977-06-29 | Desk or table top fan - has slots in blades to increase air vol. delivered without increase of speed |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2729297A1 true DE2729297A1 (en) | 1979-01-11 |
Family
ID=6012662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772729297 Pending DE2729297A1 (en) | 1977-06-29 | 1977-06-29 | Desk or table top fan - has slots in blades to increase air vol. delivered without increase of speed |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2729297A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0295353A1 (en) * | 1987-06-13 | 1988-12-21 | Khammas, Achmed Adolf Wolfgang | Rotorblade |
-
1977
- 1977-06-29 DE DE19772729297 patent/DE2729297A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0295353A1 (en) * | 1987-06-13 | 1988-12-21 | Khammas, Achmed Adolf Wolfgang | Rotorblade |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OD | Request for examination | ||
OHN | Withdrawal |