US1734135A - Vapor vacuum pump construction - Google Patents
Vapor vacuum pump construction Download PDFInfo
- Publication number
- US1734135A US1734135A US131514A US13151426A US1734135A US 1734135 A US1734135 A US 1734135A US 131514 A US131514 A US 131514A US 13151426 A US13151426 A US 13151426A US 1734135 A US1734135 A US 1734135A
- Authority
- US
- United States
- Prior art keywords
- vacuum pump
- vapor
- generator
- pump construction
- vapor vacuum
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F9/00—Diffusion pumps
Definitions
- This invention relates to vacuum pumps of the types operated by pressure vapor, on the diffusion or ejector principles. It has to do primarily with construction of the vapor generator portion of the device.
- the general object of the invention is the provision of a construction which is simple and robust and which will contribute to rapid generation of the operating vapor.
- Another object is the provision of a con struction which will accomplish these results and at the same time allow the assembly of the device in intimate association with other apparatus.
- Fig. 1 is a part elevational and partsectional view of a mercury vapor high vacuum pump, the water jacket portions being omitted;
- Fig. 2 is a sectional view on line 2 Fig. 1. V
- the reference numeral 10 designates the pump casing, which is mounted on a neck portion 11 of the boiler or generator 11.
- This generator is constructed to provide a shallow chamber for containing the mercury 12 which is to be vaporized to supply the actuating pressure fluid.
- This shallow fiat generator rests di rectly upon the hot plate 14 which offers an extended heat transfer area and which contains the heat generating elements.
- the peripheral contour of the generator 11 preferably conforms to that of the hot plate, a convenient shape being one that is circular.
- the chamber of the generator is in communication with a nozzle 15 which is housed within the casing 10 with its discharge end between the air in- 131,514, and in Germany September 9, 1925.
- the neck portion 11 is disposed eccentrically of the generator 11, so that the extent of the connection pipe 16 may be kept as short as possible with consequent reduction of pipe losses and resistance to the withdrawal of air from the evacuated vessel.
- an uprightly disposed casing a nozzle disposed therein, means providing a vapor generator and comprising a fiat boiler portion having a horizontal cross-sectional dimension substantially greater than the horizontal cross-sectional dimension of said casing, and a neck portion disposed eccentrically with respect to said boiler portion and providing an operating connection between the same and said nozzle.
Description
Nv. 5, 1 929. E, KQ-BEL I 1,734,135
VAPOR VACUUM. ,PUMF- CONSTRUCTION Filed Aug. 25, 1926 Patented Nov. 5, 1929 UNITED STATES PATENT OFFICE ERNST KOBEL, OF BADEN, SWITZERLAND, ASSIGNOR TO AKTIENGESELLSGHAFT BROWN BOVERI & CIE, OF BADEN, SWITZERLAND, A JOINT-STOCK COMPANY, OF SWITZER- LAND VAPOR VACUUM PUMP CONSTRUCTION This invention relates to vacuum pumps of the types operated by pressure vapor, on the diffusion or ejector principles. It has to do primarily with construction of the vapor generator portion of the device.
The general object of the invention is the provision of a construction which is simple and robust and which will contribute to rapid generation of the operating vapor.
Another object is the provision of a con struction which will accomplish these results and at the same time allow the assembly of the device in intimate association with other apparatus.
Other and further objects will be pointed out or indicated hereinafter or apparent to one skilled in the art upon an understanding of the invention.
In the drawing forming a part of this specification I show one fashion in which the invention may be embodied, but it is to be understood that the claim is not to be construed as limited to this particular form only.
In said drawing,
Fig. 1 is a part elevational and partsectional view of a mercury vapor high vacuum pump, the water jacket portions being omitted; and
Fig. 2 is a sectional view on line 2 Fig. 1. V
The nature of the invention will be ascertained immediately by reference to the illustrative embodiment, wherein the reference numeral 10 designates the pump casing, which is mounted on a neck portion 11 of the boiler or generator 11. This generator is constructed to provide a shallow chamber for containing the mercury 12 which is to be vaporized to supply the actuating pressure fluid. This shallow fiat generator rests di rectly upon the hot plate 14 which offers an extended heat transfer area and which contains the heat generating elements. The peripheral contour of the generator 11 preferably conforms to that of the hot plate, a convenient shape being one that is circular. Through the neck portion 11 the chamber of the generator is in communication with a nozzle 15 which is housed within the casing 10 with its discharge end between the air in- 131,514, and in Germany September 9, 1925.
In order that the device may be assembled in intimate association with other apparatus, such as the vessel which is to be evacuated, or the receiver, the neck portion 11 is disposed eccentrically of the generator 11, so that the extent of the connection pipe 16 may be kept as short as possible with consequent reduction of pipe losses and resistance to the withdrawal of air from the evacuated vessel. By virtue of the shallow and eX- tended form of the generator and its int-imate association with the hot plate throughout its area, the vaporization of the mercury is accomplished with increased rapidity, with consequent increase in pressure and reduction in the amount of mercury requisite for operation of the device.
What I claim is:
In a vacuum pump, an uprightly disposed casing, a nozzle disposed therein, means providing a vapor generator and comprising a fiat boiler portion having a horizontal cross-sectional dimension substantially greater than the horizontal cross-sectional dimension of said casing, and a neck portion disposed eccentrically with respect to said boiler portion and providing an operating connection between the same and said nozzle.
In testimony whereof I have hereunto subscribed my name at Zurich, Switzerland, on the at day of August, 1926.
ERNST KOBEL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1734135X | 1925-09-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1734135A true US1734135A (en) | 1929-11-05 |
Family
ID=7741116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US131514A Expired - Lifetime US1734135A (en) | 1925-09-09 | 1926-08-25 | Vapor vacuum pump construction |
Country Status (1)
Country | Link |
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US (1) | US1734135A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2503372A (en) * | 1945-09-07 | 1950-04-11 | Union Carbide & Carbon Corp | High vacuum indicator |
US2903181A (en) * | 1956-06-05 | 1959-09-08 | High Vacuum Equipment Corp | Oil diffusion pump |
-
1926
- 1926-08-25 US US131514A patent/US1734135A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2503372A (en) * | 1945-09-07 | 1950-04-11 | Union Carbide & Carbon Corp | High vacuum indicator |
US2903181A (en) * | 1956-06-05 | 1959-09-08 | High Vacuum Equipment Corp | Oil diffusion pump |
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