CN203201866U - Meridionally accelerated blade-type axial flow fan - Google Patents
Meridionally accelerated blade-type axial flow fan Download PDFInfo
- Publication number
- CN203201866U CN203201866U CN 201320165362 CN201320165362U CN203201866U CN 203201866 U CN203201866 U CN 203201866U CN 201320165362 CN201320165362 CN 201320165362 CN 201320165362 U CN201320165362 U CN 201320165362U CN 203201866 U CN203201866 U CN 203201866U
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- wheel hub
- hub
- electric motor
- blades
- motor
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Abstract
The utility model discloses a meridionally accelerated blade-type axial flow fan which comprises an electric motor, a fan shell and an impeller. The impeller consists of a hub and a plurality of blades arranged on the outer wall of the hub; the blades are arranged on the hub in a ring shape by taking the center axis of the hub as the center; a half-cone angle of the hub is 20 to 45 degrees; the hub is fixedly arranged on an output shaft of the electric motor; the electric motor is fixedly arranged on the inner wall of a protection barrel; and the protection barrel is fixedly arranged on the inner wall of the fan shell. The half-cone angle of the hub of the meridionally accelerated blade-type axial flow fan is large, and meanwhile, the outer edges of the blades of the impeller form an angle of 20 to 30 degrees with the center axis of the hub and are in parallel to the side wall of a cone barrel of the fan shell, and thus, the meridionally accelerated blade-type axial flow fan has low noise and the air volume and the air pressure are also improved; and the electric motor is fixedly arranged in the protection barrel, so that dirt attached to the outside of the electric motor can be reduced, influence of the dirt on heat dissipation of the electric motor is reduced, and the service life of the electric motor is prolonged.
Description
Technical field:
The utility model relates to the ventilation equipment technical field, relates in particular a kind of meridian acceleration blade profile axial-flow blower.
Background technique:
The ventilator that the meridian speed of air-flow increases gradually in the impeller channel claims the meridian acceleration ventilator, the outer rim of the blade on the impeller hub of existing meridian acceleration axial-flow blower is parallel with the central axis of wheel hub, and the outer wall of the Blower Housing of ventilator is also parallel with central axis, its air pressure air flow is less than normal, can't satisfy the demand.
Simultaneously, the motor of general ventilator all is directly to be fixed on the inwall of Blower Housing, and the motor of these ventilators is directly exposed in the middle of the air fluidly, because the difference of the working environment of ventilator, the pollution level of air also is different, at the more serious environment of some atmospheric pollution, such as the building site, the places such as workshop, because motor is directly exposed in the air, flow airborne many rubbish along with air so, pollutant can be attached to the motor surface affects motor radiating, or directly enters in the middle of the motor, affect the normal operation of motor, this can have a strong impact on the working life of fan motor.
The model utility content:
The purpose of this utility model is exactly the deficiency for prior art, and provide a kind of meridian acceleration blade profile axial-flow blower, its wheel hub half cone angle is large, simultaneously, the blade outer rim of impeller and the central axis of wheel hub be 20 ° ~ 30 ° angles and with the conically shaped parallel sidewalls of Blower Housing, its noise is little, has improved simultaneously airflow pressure; Its motor is fixed in the protection cylinder, can reduce like this motor outside and adhere to some dirts, reduces dirt to the impact of motor heat dissipation, improves motor working life.
Technology solution of the present utility model is as follows:
A kind of meridian acceleration blade profile axial-flow blower, comprise motor, Blower Housing and impeller, described impeller is comprised of wheel hub and some blades of being arranged on the outer wall of wheel hub, and annular array is on wheel hub centered by the central axis of wheel hub for all blades, and the semi-cone angle of wheel hub is 20 ° ~ 45 °; Wheel hub is fixed on the output shaft of motor, and motor is fixed on the inwall of protection cylinder, and the protection cylinder is fixed on the inwall of Blower Housing.
Described Blower Housing is comprised of two conically shapeds, the end that the diameter of two conically shapeds is large is bolted to connection together, all blades are weldingly fixed on the wheel hub, and the outer rim of blade and the central axis of wheel hub are 20 ° ~ 30 ° angles, and outer rim parallels with the sidewall of conically shaped.
Be welded with connecting plate on the outer wall of described protection cylinder, connecting plate is weldingly fixed on the inwall of Blower Housing.
Blower Housing is welded with two supports near the bottom of air intake and outlet air end.
The beneficial effects of the utility model are:
1, its wheel hub half cone angle is 20 ° ~ 45 °, simultaneously, the blade outer rim of impeller and the central axis of wheel hub be 20 ° ~ 30 ° angles and with the conically shaped parallel sidewalls of Blower Housing, like this so that this fan noise is little, improved simultaneously air quantity and blast.
2, its motor is fixed in the protection cylinder, can reduce like this motor outside and adhere to some dirts, reduces dirt to the impact of motor heat dissipation, improves motor working life.
Description of drawings:
Fig. 1 is perspective view of the present utility model;
Fig. 2 is simple and easy schematic diagram of the present utility model;
Fig. 3 is the partial structurtes schematic diagram that the utility model removes Blower Housing, motor and the impeller of protection cylinder;
Fig. 4 is the structural representation that motor of the present utility model, protection cylinder are connected with the Blower Housing sidewall.
Embodiment:
Embodiment: see shown in Fig. 1 to 4, a kind of meridian acceleration blade profile axial-flow blower, comprise motor 1, Blower Housing 2 and impeller 3, described impeller 3 is comprised of wheel hub 31 and some blades 32 of being arranged on the outer wall of wheel hub 31, annular array is on wheel hub 31 centered by the central axis 311 of wheel hub 31 for all blades 3, and the semi-cone angle 33 of wheel hub 31 is 20 ° ~ 45 °; Wheel hub 31 is fixed on the output shaft of motor 1, and motor 1 is fixed on the inwall of protection cylinder 4, and protection cylinder 4 is fixed on the inwall of Blower Housing 2, and the output shaft of motor 1 stretches out the front-end face of protection cylinder 4.
Described Blower Housing 2 is comprised of two conically shapeds 21, the end that the diameter of two conically shapeds 21 is large is bolted to connection together, all blades 32 are weldingly fixed on the wheel hub 31, the outer rim 34 of blade 3 is 20 ° ~ 30 ° angles with the central axis 311 of wheel hub 31, and outer rim 34 parallels with the sidewall of conically shaped 21.
Be welded with connecting plate 41 on the outer wall of described protection cylinder 4, it is on the inwall of conically shaped 21 that connecting plate 41 is weldingly fixed on the inwall of Blower Housing 2.
Blower Housing 2 is welded with two supports 5 near the bottom of air intake and outlet air end.
Working principle: since the semi-cone angle 33 of wheel hub 31 be 20 ° ~ 45 ° (namely on horizontal plane, outer oblique sidewall 35 and the central axis 311 of wheel hub 31 are 20 ° ~ 45 °), and on horizontal plane, the outer rim 34 that is weldingly fixed on the blade 32 on the outer oblique sidewall 35 of wheel hub 31 is 20 ° ~ 30 ° angles with the central axis 311 of wheel hub 31, formed by two conically shapeds 21 owing to Blower Housing 2 simultaneously, the sidewall of conically shaped 21 is oblique, outer rim 34 is paralleled with the sidewall of conically shaped 21, so that this blower fan has improved air quantity and blast, reduced simultaneously noise like this.
Claims (4)
1. meridian acceleration blade profile axial-flow blower, comprise motor (1), Blower Housing (2) and impeller (3), it is characterized in that: described impeller (3) is comprised of wheel hub (31) and some blades (32) of being arranged on the outer wall of wheel hub (31), annular array is on wheel hub (31) centered by the central axis (311) of wheel hub (31) for all blades (3), and the semi-cone angle (33) of wheel hub (31) is 20 ° ~ 45 °; Wheel hub (31) is fixed on the output shaft of motor (1), and motor (1) is fixed on the inwall of protection cylinder (4), and protection cylinder (4) is fixed on the inwall of Blower Housing (2).
2. described a kind of meridian acceleration blade profile axial-flow blower according to claim 1, it is characterized in that: described Blower Housing (2) is comprised of two conically shapeds (21), the large end of diameter of two conically shapeds (21) is bolted to connection together, all blades (32) are weldingly fixed on the wheel hub (31), the outer rim (34) of blade (3) is 20 ° ~ 30 ° angles with the central axis (311) of wheel hub (31), and outer rim (34) parallels with the sidewall of conically shaped (21).
3. described a kind of meridian acceleration blade profile axial-flow blower according to claim 1, it is characterized in that: be welded with connecting plate (41) on the outer wall of described protection cylinder (4), connecting plate (41) is weldingly fixed on the inwall of Blower Housing (2).
4. described a kind of meridian acceleration blade profile axial-flow blower according to claim 1, it is characterized in that: Blower Housing (2) is welded with two supports (5) near the bottom of air intake and outlet air end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320165362 CN203201866U (en) | 2013-04-03 | 2013-04-03 | Meridionally accelerated blade-type axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320165362 CN203201866U (en) | 2013-04-03 | 2013-04-03 | Meridionally accelerated blade-type axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203201866U true CN203201866U (en) | 2013-09-18 |
Family
ID=49145977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320165362 Expired - Fee Related CN203201866U (en) | 2013-04-03 | 2013-04-03 | Meridionally accelerated blade-type axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203201866U (en) |
-
2013
- 2013-04-03 CN CN 201320165362 patent/CN203201866U/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: 20130918 Termination date: 20160403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |