CN220037057U - Diffuser structure with guide vanes - Google Patents
Diffuser structure with guide vanes Download PDFInfo
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- CN220037057U CN220037057U CN202320924384.0U CN202320924384U CN220037057U CN 220037057 U CN220037057 U CN 220037057U CN 202320924384 U CN202320924384 U CN 202320924384U CN 220037057 U CN220037057 U CN 220037057U
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- diffuser
- impeller
- guide
- guide vanes
- utility
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- 238000009792 diffusion process Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the field of air compressors, in particular to a diffuser structure with guide vanes. The utility model provides a take guide vane's diffuser structure, includes the diffuser, and diffuser one side is equipped with the impeller, and the impeller outside is equipped with the spiral case, clearance fit between impeller's the wheel back terminal surface and the diffuser terminal surface evenly is equipped with a plurality of guide vane along circumference in the position that the diffuser surface of diffuser is close to the clearance between impeller and the diffuser, forms the direction runner between two adjacent guide vane, and the direction runner is used for leading the high-pressure gas between spiral case and the diffuser surface. The guide flow passage between the guide blades guides high-pressure gas between the volute and the diffuser surface, so that leakage of the high-pressure gas from a gap between the impeller wheel back and the diffuser to a motor cavity is effectively reduced, and the total efficiency of the air compressor is improved.
Description
Technical field:
the utility model relates to the field of air compressors, in particular to a diffuser structure with guide vanes.
The background technology is as follows:
in the centrifugal air compressor structure, after the air is pressurized by the impeller, the pressure is increased, the kinetic energy is greatly increased, the pressure of the air is further increased by fully utilizing the kinetic energy, a diffuser is arranged at the position close to the outlet of the impeller, the impeller is fixed on the main shaft and rotates along with the main shaft at a high speed during installation, the diffuser is fixedly arranged on the shell, and the impeller and the diffuser are in clearance fit. During operation, most of the gas pressurized by the impeller flows into the volute to undergo secondary diffusion, but a small amount of gas flows into the motor cavity through a gap between the impeller wheel back and the diffuser, so that the compression efficiency of the air compressor is reduced.
In summary, in the field of centrifugal air compressors, the problem of gas leakage between the impeller wheel back and the diffuser has become a technical problem to be solved in industry.
The utility model comprises the following steps:
the utility model provides a diffuser structure with guide vanes to make up for the defects of the prior art, and solves the problem of reduced compression efficiency caused by gas leakage between an impeller wheel back and a diffuser in the past.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a take guide vane's diffuser structure, includes the diffuser, and diffuser one side is equipped with the impeller, and the impeller outside is equipped with the spiral case, clearance fit between impeller's the wheel back terminal surface and the diffuser terminal surface evenly is equipped with a plurality of guide vane along circumference in the position that the diffuser surface of diffuser is close to the clearance between impeller and the diffuser, forms the direction runner between two adjacent guide vane, and the direction runner is used for leading the high-pressure gas between spiral case and the diffuser surface.
The guide vane and the diffuser are integrally formed.
The guide vanes are triangular and are obliquely arranged on the diffusion surface of the diffuser.
The plurality of guide vanes are arranged in a vortex on the diffuser surface of the diffuser.
And the end face of the diffuser is provided with an impeller groove which is in clearance fit with the impeller back.
The utility model adopts the scheme and has the following advantages:
through evenly being equipped with a plurality of guide vane along circumference in the position that the diffusion face of diffuser is close to the clearance between impeller and the diffuser, the direction runner between the guide vane leads the high-pressure gas between spiral case and the diffuser diffusion face, reduces effectively that high-pressure gas leaks to the motor chamber from the clearance between impeller wheel back and the diffuser, promotes the total efficiency of air compressor machine.
Description of the drawings:
fig. 1 is a schematic cross-sectional view of the present utility model.
Fig. 2 is a schematic perspective view of a diffuser according to the present utility model.
In the figure, 1, an impeller, 2, a diffuser, 3, a volute, 4, guide vanes, 5 and a guide runner.
The specific embodiment is as follows:
in order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1-2, the diffuser structure with guide vanes comprises a diffuser 2, wherein an impeller 1 is arranged on one side of the diffuser 2, a volute 3 is arranged on the outer side of the impeller 1, a gap fit is formed between the wheel back end face of the impeller 1 and the end face of the diffuser 2, a plurality of guide vanes 4 are uniformly arranged at the position, close to the gap between the impeller 1 and the diffuser 2, of the diffuser face of the diffuser 2 along the circumference, a guide flow passage 5 is formed between two adjacent guide vanes 4, and the guide flow passage 5 is used for guiding high-pressure gas between the volute 3 and the diffuser face of the diffuser 2.
The guide vane 4 is integrally formed with the diffuser 2.
The guide vanes 4 are triangular and are obliquely arranged on the diffusion surface of the diffuser 2, and the plurality of guide vanes 4 are arranged on the diffusion surface of the diffuser 2 in a vortex mode, so that high-pressure gas can be guided.
The end face of the diffuser 2 is provided with an impeller groove which is in clearance fit with the back of the impeller 1.
Working principle:
when the high-pressure gas pressurized by the impeller 1 reaches a gap between the impeller 1 and the diffuser 2 in operation, most of the high-pressure gas flows into the volute 3 to undergo secondary diffusion under the guiding action of the guide blades 4, so that leakage of the high-pressure gas from the gap between the wheel back of the impeller 1 and the diffuser 2 to a motor cavity is effectively reduced, and the total efficiency of the air compressor is improved.
The above embodiments are not to be taken as limiting the scope of the utility model, and any alternatives or modifications to the embodiments of the utility model will be apparent to those skilled in the art and fall within the scope of the utility model.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (5)
1. The utility model provides a take guide vane's diffuser structure, includes the diffuser, and diffuser one side is equipped with the impeller, and the impeller outside is equipped with spiral case, its characterized in that: the impeller comprises an impeller, a diffuser, a volute, a diffuser, a guide flow passage, a plurality of guide vanes, a guide flow passage, a guide valve, a control valve and a control valve.
2. The diffuser structure with guide vanes as set forth in claim 1, wherein: the guide vane and the diffuser are integrally formed.
3. The diffuser structure with guide vanes as set forth in claim 1, wherein: the guide vanes are triangular and are obliquely arranged on the diffusion surface of the diffuser.
4. A diffuser structure with guide vanes as set forth in claim 3, wherein: the plurality of guide vanes are arranged in a vortex on the diffuser surface of the diffuser.
5. The diffuser structure with guide vanes as set forth in claim 1, wherein: and the end face of the diffuser is provided with an impeller groove which is in clearance fit with the impeller back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320924384.0U CN220037057U (en) | 2023-04-19 | 2023-04-19 | Diffuser structure with guide vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320924384.0U CN220037057U (en) | 2023-04-19 | 2023-04-19 | Diffuser structure with guide vanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220037057U true CN220037057U (en) | 2023-11-17 |
Family
ID=88727462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320924384.0U Active CN220037057U (en) | 2023-04-19 | 2023-04-19 | Diffuser structure with guide vanes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220037057U (en) |
-
2023
- 2023-04-19 CN CN202320924384.0U patent/CN220037057U/en active Active
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| GR01 | Patent grant |