CN2300748Y - Scavenger fan - Google Patents
Scavenger fan Download PDFInfo
- Publication number
- CN2300748Y CN2300748Y CN 97207831 CN97207831U CN2300748Y CN 2300748 Y CN2300748 Y CN 2300748Y CN 97207831 CN97207831 CN 97207831 CN 97207831 U CN97207831 U CN 97207831U CN 2300748 Y CN2300748 Y CN 2300748Y
- Authority
- CN
- China
- Prior art keywords
- motor
- flabellum
- shell
- utility
- fan
- 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 relates to a scavenger fan. A small fan blade and a large fan blade are arranged on both ends of the shaft of a motor. A plurality of guide blades are arranged around the fan blades of the motor and between the motor and an outer shell. Compared with an ordinary scavenger fan, the scavenger fan provided by the utility model not only has high scavenging efficiency, but also does not add noise.
Description
The utility model relates to a kind of ventilation fan.
The structure of common ventilation fan is to comprise motor, is made up of the flabellum and the shell of driven by motor.The ventilation effect of this ventilation fan and very good, especially when outdoor when wind is arranged, exhaust effect is poorer, even air-flow occurs and pour in down a chimney into indoor situation.Except common ventilation fan, people also adopt range hood, but noise is bigger during the work of present most of range hood.
The purpose of this utility model provides a kind of both scavenging efficiencies height, does not increase the ventilation fan of noise again.
The technical solution of the utility model is that a little flabellum and a big flabellum are installed on the two ends of motor reel; Between motor and shell, around motor flabellum multi-disc guide vane.
Further improving is to be provided with out mouth mask on the shell of little flabellum one end, and the import bore of relative aperture shell front end that goes out mouth mask is little.
Below in conjunction with embodiment of the present utility model and accompanying drawing thereof, describe its structure and beneficial effect in detail.
Fig. 1 is the utility model embodiment's a sectional view;
Fig. 2 is the utility model embodiment's a schematic perspective view.
As illustrated in fig. 1 and 2, the utility model embodiment is by motor 1, little flabellum 3, and big flabellum 4 and shell 2 are formed.Its medium and small flabellum 3 is installed in the rear end of the axle of motor 1, and big flabellum 4 is installed in the front end of the axle of motor 1.Between shell 2 and motor 1, be provided with multi-disc guide vane 5 around motor 1
Adopt the two-stage flabellum among the utility model embodiment, it is big flabellum 4 that first order flabellum adopts the high aspect ratio flabellum, to improve intake efficiency; It is little flabellum 3 that second level flabellum adopts the low aspect ratio flabellum, to improve pressure ratio.Guide vane.Rear end small-bore goes out mouth mask has further increased pressure ratio.
Total has not only increased pressure ratio, and in conversion process Oil-gas Separation, avoid polluting exterior wall.The utility model has increased pressure ratio owing to adopted the two-stage flabellum, thereby has improved the air displacement in the unit time, reaches under the condition that does not increase noise, has the purpose of higher scavenging efficiency.
Claims (2)
1. ventilation fan comprises motor (1) and shell (2), it is characterized in that on the two ends of motor (1) axle a little flabellum (3) and a big flabellum (4) being installed; Between motor (1) and shell (2), be provided with multi-disc guide vane (5) around motor.
2. ventilation fan according to claim 1 is characterized in that being provided with out mouth mask (6) on the shell of little flabellum (3) one ends, and the import bore of relative aperture shell (2) front end that goes out mouth mask (6) is little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207831 CN2300748Y (en) | 1997-01-13 | 1997-01-13 | Scavenger fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207831 CN2300748Y (en) | 1997-01-13 | 1997-01-13 | Scavenger fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2300748Y true CN2300748Y (en) | 1998-12-16 |
Family
ID=33927488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97207831 Expired - Fee Related CN2300748Y (en) | 1997-01-13 | 1997-01-13 | Scavenger fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2300748Y (en) |
-
1997
- 1997-01-13 CN CN 97207831 patent/CN2300748Y/en not_active Expired - Fee Related
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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 |