CN202867284U - Negative pressure draught fan - Google Patents
Negative pressure draught fan Download PDFInfo
- Publication number
- CN202867284U CN202867284U CN 201220513445 CN201220513445U CN202867284U CN 202867284 U CN202867284 U CN 202867284U CN 201220513445 CN201220513445 CN 201220513445 CN 201220513445 U CN201220513445 U CN 201220513445U CN 202867284 U CN202867284 U CN 202867284U
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- CN
- China
- Prior art keywords
- negative
- fan blade
- protective net
- pressure air
- 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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- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a negative pressure draught fan which comprises shutters, a protective net, fan blades, a motor, a transmission belt and a support frame. The shutters are arranged on one side of a shell body. The protective net is arranged on the other side of the shell body. The fan blades are arranged on a fan blade wheel shaft between the shutters and the protective net. The motor is arranged on a top corner of the shell body. The motor is connected with the fan blade wheel shaft through the transmission belt. The support frame is arranged between an upper shell body and a lower shell body. The support frame is of a 1 shape. The negative pressure draught fan has the advantages of being small in noise and large in air-out quantity because of the adopted technical scheme.
Description
Technical field
The utility model belongs to apparatus of air conditioning field, especially relates to a kind of negative-pressure air fan.
Background technique
Negative-pressure air fan is as a kind of ventilation equipment, and the cross-ventilation in the energy Effective Raise factory building improves the effect that the factory building cooling is ventilated.The structure of negative-pressure air fan generally includes housing, motor, electric machine support, fan blade, iron net and blinds etc.
In the prior art, the support that connects motor is the T font that is converted into iron sheet, and motor straight is connected on the T-shaped support, and support and shell are fixed with 6 screws, thus shake easily when moving and also noise large.And therefore this structure has increased windage because the cross section of support is larger, has reduced the air output of negative-pressure air fan, has reduced the working efficiency of negative-pressure air fan.
Therefore, it is little that those skilled in the art is devoted to develop a kind of noise, and the large negative-pressure air fan of air output.
Summary of the invention
Problem to be solved in the utility model provides a kind of negative-pressure air fan, and especially a kind of vibration is little, noise is little, and the large negative-pressure air fan of air output.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of negative-pressure air fan, comprise blinds, protective net, fan blade, motor, drivign belt and support, described blinds is arranged on the one side of housing, described protective net is arranged at the another side of housing, described fan blade is arranged on the fan blade wheel shaft between blinds and the protective net, described motor is arranged at the drift angle place of housing, described motor is connected wheel shaft and is connected by drivign belt with fan blade, described support is arranged between the upper-lower casing, and described support is 1 font.
Further, described blinds is power-operated shutter, and blinds can automatic on-off, reaches effect dustproof, waterproof.
Further, larger for making air quantity, described fan blade is the wing blade axial-flow leaf.
Further, for improving working life, described fan blade is made for strengthening nylon material.
Further, for guaranteeing to use safety, described protective net designs for grid shape.
Advantage and the good effect that the utlity model has are: owing to adopt technique scheme, the utility model noise is little and air output is large.
Description of drawings
Fig. 1 is structural representation of the present utility model
Embodiment
As shown in Figure 1, the utility model provides a kind of negative-pressure air fan, comprise blinds 1, protective net 2, fan blade 3, motor 4, drivign belt 5 and support 6, described blinds 1 is arranged on the one side of housing, described protective net 2 is arranged at the another side of housing, described fan blade is arranged on the fan blade wheel shaft between blinds 1 and the protective net 2, described motor 4 is arranged at the drift angle place of housing, the wheel shaft that described motor 4 is connected with fan blade connects by drivign belt 5, described support 6 is arranged between the upper-lower casing, and described support 6 is 1 font.
Further, described blinds 1 is power-operated shutter, and blinds can automatic on-off, reaches effect dustproof, waterproof.
Further, larger for making air quantity, described fan blade 3 is the wing blade axial-flow leaf.
Further, for improving working life, described fan blade 3 is made for strengthening nylon material.
Further, for guaranteeing to use safety, described protective net 2 designs for grid shape.
The working principle of this example: steady power negative-pressure air fan has adopted fan blade of new generation, use the aeration-cooling principle of cross-ventilation, negative pressure ventilation, with superpower suction, the rapid inhale fresh air of subtend, gate or window by the installing place, with indoor hot gas, peculiar smell, promptly discharge outdoor, because suction function flows into fresh air naturally, it is identical with outdoor temperature that room temperature can be low to moderate.
Use after the negative pressure type induced draft fan, can allow Air Flow, per hour rate of ventilation can reach (100m2 factory building) 60 times, for you create smooth, the with fresh air comfortable working environment that ventilates, promotes working efficiency, makes each worker more healthy.
More than an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (5)
1. negative-pressure air fan, it is characterized in that: comprise blinds (1), protective net (2), fan blade (3), motor (4), drivign belt (5) and support (6), described blinds (1) is arranged on the one side of housing, described protective net (2) is arranged at the another side of housing, described fan blade is arranged on the fan blade wheel shaft between blinds (1) and the protective net (2), described motor (4) is arranged at the drift angle place of housing, described motor (4) is connected 3 with fan blade) wheel shaft connect by drivign belt (5), described support (6) is arranged between the upper-lower casing, and described support (6) is 1 font.
2. negative-pressure air fan according to claim 1, it is characterized in that: described blinds (1) is power-operated shutter.
3. negative-pressure air fan according to claim 1, it is characterized in that: described fan blade (3) is the wing blade axial-flow leaf.
4. negative-pressure air fan according to claim 1 is characterized in that: described fan blade (3) is made for strengthening nylon material.
5. negative-pressure air fan according to claim 1, it is characterized in that: described protective net (2) designs for grid shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220513445 CN202867284U (en) | 2012-10-08 | 2012-10-08 | Negative pressure draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220513445 CN202867284U (en) | 2012-10-08 | 2012-10-08 | Negative pressure draught fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867284U true CN202867284U (en) | 2013-04-10 |
Family
ID=48034007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220513445 Expired - Fee Related CN202867284U (en) | 2012-10-08 | 2012-10-08 | Negative pressure draught fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867284U (en) |
-
2012
- 2012-10-08 CN CN 201220513445 patent/CN202867284U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20141008 |
|
| EXPY | Termination of patent right or utility model |