US1159094A - Centrifugal air-compressor. - Google Patents
Centrifugal air-compressor. Download PDFInfo
- Publication number
- US1159094A US1159094A US71570912A US1912715709A US1159094A US 1159094 A US1159094 A US 1159094A US 71570912 A US71570912 A US 71570912A US 1912715709 A US1912715709 A US 1912715709A US 1159094 A US1159094 A US 1159094A
- Authority
- US
- United States
- Prior art keywords
- vanes
- compressor
- casing
- centrifugal air
- impeller
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
- F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
- F01D11/122—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material
Definitions
- This invention relates to centrifugal air compressing machines, and its object is to protect the edges of the revolving vanes frominjury by rubbing against the walls of the casing in which the impeller rotates. Theseparts are usually fitted together with a minimum of clearance, in order to avoid leakage losses. If for any reason the impeller shaft shifts longitudinally,the edges edge view of a vane so'equipped, and Fig. 3'
- Figure 1 is an axial section of a portion of a centrifugal compressor showing the vanes provided with my wearing plate.
- Fig. 2 isan is a top plan view on an enlargednscale of a pair of such vanes.
- the compressor has the usual body 1 containing the 'wheel casing 2 having walls 3 between which the impeller rotates.
- a dif fuser 4. surrounds the wheel casing with vanes '5 to guide the air thrown off from the impeller.
- the shaft 6 passes centrally -through the wheel casing and carries the impeller, which has a web '1 carrying on each side the vanes 8.
- Each vane has a curved inner portion 8 to give a better hold on the air entering through the eye 9 of the casing.
- the remainder of the vane is preferably radial or substantially so. Along each ed e of the radial portion is secured a thin stri 10 of soft metal, such as brass, lead,
- centrifugal compressor having a casing and an open sided impeller designed to run with clos'e clear- M ances, of a wear strip of softer material than the impeller vanes-fixed to and projecting over the edges of the vanes into close proximity to, but not into contact with the side walls of the casing.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
R. H. RICE.
CENTRIFUGAL AIR COMPRESSOR.
APPLICATIOI i FlLED Auc.19. 1912.
1,159;O'94,- v Patented Nov. 2, 1915.
Fig. I.
. Inventor. Qichard H. Rice.
' 4 UNI E sr A omen.
RICHARD H. RICE, OF LYNN, MASSACHUSETTS, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF YORK.
CENTRIFUGAL AIR-COMPRESSOR.
setts, have invented certain new and useful Improvements in Centrifugal Air-Compressors, of which the following is a specification.
This invention relates to centrifugal air compressing machines, and its object is to protect the edges of the revolving vanes frominjury by rubbing against the walls of the casing in which the impeller rotates. Theseparts are usually fitted together with a minimum of clearance, in order to avoid leakage losses. If for any reason the impeller shaft shifts longitudinally,the edges edge view of a vane so'equipped, and Fig. 3'
of the vanes on one sideof the impeller are liable to come into dangerous proximity to the walls of the casing and run the risk of 'being'bent or broken by scraping along over the surface of said walls. By my invention, I provide a wearing plate of soft metal, .whlch under the conditions mentioned, will be quickly worn away and leave the vanes free to revolve as before. The wearing plate may be applied either to the vanes themselves orto the walls of the casing.
' In the accompanying drawing, Figure 1 is an axial section of a portion of a centrifugal compressor showing the vanes provided with my wearing plate. Fig. 2 isan is a top plan view on an enlargednscale of a pair of such vanes.
' The compressor has the usual body 1 containing the 'wheel casing 2 having walls 3 between which the impeller rotates. A dif fuser 4. surrounds the wheel casing with vanes '5 to guide the air thrown off from the impeller. The shaft 6 passes centrally -through the wheel casing and carries the impeller, which has a web '1 carrying on each side the vanes 8. Each vane has a curved inner portion 8 to give a better hold on the air entering through the eye 9 of the casing. The remainder of the vane is preferably radial or substantially so. Along each ed e of the radial portion is secured a thin stri 10 of soft metal, such as brass, lead,
bab itt or other alloy, firmly fastened to the Specification of Letters Patent.
Patented Nov. 2, 1915.
Application filed August 19, 1912. Serial No. 715,709. g I v vane by rivets 11 and projecting slightly beyond the edge of said vane and into close proximity to the wall of the casing. In case the shaft shifts axially, the strip 10 on that edge of the vane which is brought closer to the .wall of the casing will come in contact with said wall, and will quickly be Worn down by rubbing against said wall, without injury to the vane itself.
Inasmuch as the efficiency of the machine depends largely upon the position of the vanes on the impeller disk, and their accurate maintenance in such position,it follows that this invention is actually .of considerable importance in the art, in spite of its seeming simplicity.
In accordance with the,provisions of the patent" statutes, I h-ai'e described the principle of operation of my invention, together with the" apparatus which I now consider to represent the bestembodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.
What I claim as new and desire to secure by LettersPatent of the United States, is
l. The combinationin a centrifugal compressor having a casing and an open sided impeller designed to run with clos'e clear- M ances, of a wear strip of softer material than the impeller vanes-fixed to and projecting over the edges of the vanes into close proximity to, but not into contact with the side walls of the casing.
2. The combination in a centrifugal compressor having a casing and an open sided iinpcner designed to run with close clearances, of wear strips of relatively thin material as compared to the thickness of the vanes fastened to each side of the vanes and projecting over the outer edges thereof into close proximitv to the side walls of the easing.
In witness whereof, I have hereunto set my hand this 14th day of August, 1912.
RICHARD II. RICE- VVitnesses':
FRANK G. HAT'rI-n, RALPH L. KREIDLER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71570912A US1159094A (en) | 1912-08-19 | 1912-08-19 | Centrifugal air-compressor. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71570912A US1159094A (en) | 1912-08-19 | 1912-08-19 | Centrifugal air-compressor. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1159094A true US1159094A (en) | 1915-11-02 |
Family
ID=3227141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US71570912A Expired - Lifetime US1159094A (en) | 1912-08-19 | 1912-08-19 | Centrifugal air-compressor. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1159094A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2641191A (en) * | 1946-11-12 | 1953-06-09 | Buchi Alfred | Guide means on impeller for centrifugal pumps or blowers |
| US3053694A (en) * | 1961-02-20 | 1962-09-11 | Gen Electric | Abradable material |
-
1912
- 1912-08-19 US US71570912A patent/US1159094A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2641191A (en) * | 1946-11-12 | 1953-06-09 | Buchi Alfred | Guide means on impeller for centrifugal pumps or blowers |
| US3053694A (en) * | 1961-02-20 | 1962-09-11 | Gen Electric | Abradable material |
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