CN218093528U - Diagonal flow fan - Google Patents
Diagonal flow fan Download PDFInfo
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- CN218093528U CN218093528U CN202222482946.9U CN202222482946U CN218093528U CN 218093528 U CN218093528 U CN 218093528U CN 202222482946 U CN202222482946 U CN 202222482946U CN 218093528 U CN218093528 U CN 218093528U
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- 238000009423 ventilation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model relates to a diagonal flow fan, include: a housing; a motor disposed within the housing; the impeller is fixedly connected with the output end of the motor and is positioned at the inlet of the shell; the guide vane is fixed in the shell, positioned at the outlet of the shell and coaxially arranged with the shell; when the motor drives the impeller to rotate, axial wind obliquely enters the shell through the impeller and then passes through the guide vane to axially discharge the wind from the outlet of the shell; the device is started, airflow gradually changes from an axial direction to an oblique flow channel, and slowly changes from a guide vane to the axial direction after coming out of an impeller outlet, and the design of the impeller blade accords with a ternary flow rule, so that the impact loss of the population of the fan is small, the pressure and the speed of the outlet of the fan are kept uniform in the width direction, the flow in the fan is uniform, the eddy current loss is small, and the airflow is not easy to separate; the flow coefficient is improved, and the wind pressure coefficient is also improved.
Description
Technical Field
The utility model relates to a fan, especially a diagonal flow fan.
Background
The conventional fan can be used for ventilation of places such as general factories, warehouses, offices, houses and the like, and can be used for indoor ventilation of general factories and buildings, and can be used as input gas and exhaust gas;
the existing fans comprise axial fans and centrifugal fans; the air pressure coefficient of the existing axial fan is crossed with the bottom, and the flow coefficient of the centrifugal fan is lower;
in conclusion, how to improve the flow coefficient and the wind pressure coefficient of the fan becomes a problem which needs to be solved urgently by researchers in the field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how to improve the flow coefficient and the wind pressure coefficient of the fan;
in order to solve the technical problem, the utility model discloses the technical scheme who takes does:
the utility model relates to a diagonal flow fan, include: a housing; a motor disposed within the housing; the impeller is fixedly connected with the output end of the motor and is positioned at the inlet of the shell; the guide vane is fixed in the shell, is positioned at the outlet of the shell and is coaxially arranged with the shell; when the motor drives the impeller to rotate, axial wind obliquely enters the shell through the impeller and then passes through the guide vane to be discharged from the outlet of the shell in an axial direction;
in the scheme, wind is axially led into the shell through the impeller, and then the wind is axially discharged through the guide vanes, the impeller in the scheme is driven to rotate through the motor, and the guide vanes are fixedly arranged; the axial fan and the centrifugal fan are combined by the device, so that the flow coefficient is improved, and the air pressure coefficient is also improved.
Furthermore, the angles of the tangential angles of three sections of inlets of the meridian plane of the impeller blade are different;
therefore, the three sections of the impeller blade are provided with different inlet angles to form a ternary twisted blade, the twisted blade enables an efficient suction effect to be formed at an inlet, and meanwhile, the inlet noise and the whole machine vibration are reduced.
Furthermore, the meridian plane of the impeller blade is contracted;
the meridional contraction of the outer end wall of the impeller is beneficial to avoiding the blade tip leakage vortex from breaking in a blade channel, so that the oblique flow fan has good noise characteristic and smaller vibration to enhance the structural safety.
The utility model has the advantages that: the utility model relates to a diagonal flow fan, this device starts, and the air current becomes the slant from the axial gradually and gets into the runner, slowly becomes the axial by the stator blade after coming out from the impeller export, because the design of impeller blade accords with the ternary flow law, this can guarantee that the impact loss of fan population is little, makes fan export pressure and speed keep even in the width direction again, and the fan internal flow is more even, and eddy current loss is less, and the air current is difficult for separating; the flow coefficient is improved, and the wind pressure coefficient is also improved.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples.
FIG. 1 is a schematic view of the blade section distribution and the angle change trajectory of the impeller of the present invention;
FIG. 2 is a graph of the inlet angle variation of the three sections of the impeller blade of the present patent;
FIG. 3 is a two-dimensional schematic view of the impeller of this patent;
fig. 4 is a two-dimensional cross-sectional view of the patent with arrowed wind flow directions.
In the figure: 1-shell, 2-motor, 3-impeller and 4-guide vane.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 4, the utility model relates to a diagonal flow fan, include: a housing 1; a motor 2 disposed within the housing 1; the impeller 3 is fixedly connected with the output end of the motor 2 and is positioned at the inlet of the shell 1; the guide vane 4 is fixed in the shell 1, is positioned at the outlet of the shell 1, and is coaxially arranged with the shell 1; when the motor 2 drives the impeller 3 to rotate, axial wind obliquely enters the shell 1 through the impeller 3, and then passes through the centrifugal guide vane 4 to be discharged from an outlet of the shell 1 in an axial direction;
in the scheme, wind is axially led into the shell through the impeller, and then the wind is axially discharged through the guide vanes, the impeller in the scheme is driven to rotate through the motor, and the guide vanes are fixedly arranged; the axial fan and the centrifugal fan are combined by the device, so that the flow coefficient is improved, and the air pressure coefficient is also improved.
As shown in fig. 1-3, the angles of the tangential angles of the three sections of inlets of the meridian planes of the impeller blades are different;
through designing the tangential angle design of the three sections of inlet on the meridian plane of the impeller blade, the three sections of the blade have different inlet angles to form a ternary twisted blade, the inlet forms a high-efficiency suction effect through the twisted blade, and meanwhile, the inlet noise and the whole machine vibration are reduced.
As shown in fig. 1-3, the meridian plane of the impeller blade is in a contraction shape;
the meridional contraction of the outer end wall of the impeller is beneficial to avoiding the blade tip leakage vortex from breaking in a blade channel, so that the oblique flow fan has good noise characteristic and smaller vibration to enhance the structural safety.
The utility model relates to a diagonal flow fan, this device starts, and the air current is changed into the slant from the axial gradually and is got into the runner, slowly changes into the axial by the stator blade after coming out from the impeller export, because the design of impeller blade accords with the ternary flow law, this can guarantee that the impact loss of fan population is little, makes fan export pressure and speed keep even in the width direction again, and the fan internal flow is more even, and eddy current loss is less, and the air current is difficult for separating; the flow coefficient is improved, and the wind pressure coefficient is also improved.
The device can be applied to the working conditions of 1950-2050 m < 3 >/h flow, 950-1050 Pa wind pressure and 2900rpm rotation speed.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. A diagonal flow fan, comprising:
a housing;
a motor disposed within the housing;
the impeller is fixedly connected with the output end of the motor and is positioned at the inlet of the shell;
the guide vane is fixed in the shell, positioned at the outlet of the shell and coaxially arranged with the shell;
when the motor drives the impeller to rotate, axial wind obliquely enters the shell through the impeller and then passes through the guide vane to axially wind out from the outlet of the shell.
2. The diagonal flow fan of claim 1, wherein the tangential angles of the three inlet fillets of the meridian plane of the impeller blade are all non-uniform.
3. The diagonal flow fan of claim 1, wherein the radial surfaces of the impeller blades are convergent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222482946.9U CN218093528U (en) | 2022-09-20 | 2022-09-20 | Diagonal flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222482946.9U CN218093528U (en) | 2022-09-20 | 2022-09-20 | Diagonal flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218093528U true CN218093528U (en) | 2022-12-20 |
Family
ID=84452719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222482946.9U Active CN218093528U (en) | 2022-09-20 | 2022-09-20 | Diagonal flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218093528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117967592A (en) * | 2024-02-21 | 2024-05-03 | 浙江金菱制冷工程有限公司 | Diagonal flow fan of cooling tower |
-
2022
- 2022-09-20 CN CN202222482946.9U patent/CN218093528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117967592A (en) * | 2024-02-21 | 2024-05-03 | 浙江金菱制冷工程有限公司 | Diagonal flow fan of cooling tower |
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