CN202251101U - Centrifugal fluid machinery diffuser - Google Patents
Centrifugal fluid machinery diffuser Download PDFInfo
- Publication number
- CN202251101U CN202251101U CN2011203280896U CN201120328089U CN202251101U CN 202251101 U CN202251101 U CN 202251101U CN 2011203280896 U CN2011203280896 U CN 2011203280896U CN 201120328089 U CN201120328089 U CN 201120328089U CN 202251101 U CN202251101 U CN 202251101U
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- Prior art keywords
- diffuser
- height
- fluid machinery
- centrifugal
- utility
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- 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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Abstract
The utility model discloses a centrifugal fluid machinery diffuser, which comprises a wheel cap, a wheel disc and a diffuser blade. The centrifugal fluid machinery diffuser has the key technology that the diffuser blade is a semi-commanding diffuser blade; the ratio of the height Hd of the semi-commanding diffuser blade to the height of the outlet of a centrifugal impeller is 0.2-0.6. The centrifugal fluid machinery diffuser disclosed by the utility model is characterized in that a pressure recovery coefficient can be improved within a large working condition range by the semi-commanding diffuser, and the overall pressure ratio and the polytropic efficiency of the fluid machinery can be improved.
Description
Technical field
The utility model relates to a kind of centrifugal type fluid machine diffuser vane, especially a kind of half-height type Diffuser.
Background technique
At various blower fans; In the centrifugal type fluid machines such as compressor; The form of Diffuser is generally no leaf formula or blade type, and no leaf formula Diffuser runner is longer, and flow losses are big; The diffusion effect is undesirable, and existing blade diffuser exists the characteristics that can not adapt to variable working condition when better diffusion effect is arranged.
The model utility content
The technical problem that the utility model will solve provides a kind of centrifugal type fluid machine Diffuser, and it can better reduce flow losses, improves extension pressur efficiency, can adapt to variable working condition preferably simultaneously.
For solving the problems of the technologies described above; The technological scheme that the utility model is taked is: a kind of centrifugal be the fluid machinery Diffuser; It comprises wheel cap, wheel disc and diffuser vane; Its key technology is: said diffuser vane is the half-height type diffuser vane, the height H of said half-height type diffuser vane
dThe ratio that exports height H r with centrifugal impeller is 0.2～0.6.
Above-mentioned half-height type diffuser vane along the circumferential direction is distributed on said wheel cap or the wheel disc.
Adopt the beneficial effect that technique scheme produced to be: the utility model half-height type Diffuser can improve pressure-recovery factor in big operating mode scope, improve the overall pressure tatio and the polytropic efficiency of fluid machinery.
Description of drawings
Fig. 1 is the schematic perspective view of the utility model;
Fig. 2 is the schematic perspective view of Fig. 1 when removing wheel cap;
Fig. 3 is the schematic representation that the utility model half-height type diffuser vane is installed on wheel disc;
Fig. 4 is the schematic representation that the utility model half-height type diffuser vane is installed on wheel cap;
Wherein, 1, wheel cap; 2, wheel disc; 3, centrifugal impeller; 4, half-height type diffuser vane.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Referring to accompanying drawing 1～accompanying drawing 4, the utility model comprises wheel cap 1, wheel disc 2 and diffuser vane, and said diffuser vane is a half-height type diffuser vane 4, the height H of said half-height type diffuser vane 4
dAnd the ratio of centrifugal impeller 3 outlet height H r is between 0.2～0.6.
A plurality of half-height type diffuser vanes 4 evenly are provided with along the circumferencial direction of wheel disc 2 or wheel cap 1.Half-height type diffuser vane 4 can be installed on wheel cap 1 or the wheel disc 2, and this can decide according to different centrifugal type fluid machines, and the optimal location of its installation and optimal height Hd can change better adaptability along with different design demand.The utility model will guarantee that centrifugal impeller 4 can rotate freely when using.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiments shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (2)
1. centrifugal type fluid machine Diffuser, it comprises wheel cap (1), wheel disc (2) and diffuser vane, it is characterized in that: said diffuser vane is half-height type diffuser vane (4), the height H of said half-height type diffuser vane (4)
dThe ratio that exports height H r with centrifugal impeller (3) is 0.2～0.6.
2. centrifugal type fluid machine Diffuser according to claim 1 is characterized in that: said half-height type diffuser vane (4) along the circumferential direction is distributed on said wheel cap (1) or the wheel disc (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203280896U CN202251101U (en) | 2011-09-02 | 2011-09-02 | Centrifugal fluid machinery diffuser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203280896U CN202251101U (en) | 2011-09-02 | 2011-09-02 | Centrifugal fluid machinery diffuser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251101U true CN202251101U (en) | 2012-05-30 |
Family
ID=46112351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203280896U Expired - Fee Related CN202251101U (en) | 2011-09-02 | 2011-09-02 | Centrifugal fluid machinery diffuser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251101U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814930A (en) * | 2019-11-18 | 2021-05-18 | 苏州爱普电器有限公司 | Dry and wet dual-purpose electric fan |
-
2011
- 2011-09-02 CN CN2011203280896U patent/CN202251101U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814930A (en) * | 2019-11-18 | 2021-05-18 | 苏州爱普电器有限公司 | Dry and wet dual-purpose electric fan |
| CN112814930B (en) * | 2019-11-18 | 2023-02-03 | 苏州爱普电器有限公司 | Dry and wet dual-purpose electric fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. HEBEI ELECTRIC POWER CORP Effective date: 20130320 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130320 Address after: 050000 Hebei city of Shijiazhuang Province Sports No. 238 South Street Patentee after: Hebei Electric Power Construction & Adjustment Research Institute Patentee after: State Grid Corporation of China Patentee after: Electric Power Research Institute of Hebei Electric Power Corporation Address before: 050000 Hebei city of Shijiazhuang Province Sports No. 238 South Street Patentee before: Hebei Electric Power Construction & Adjustment Research Institute |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20160902 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |