GB815070A - Improvements in or relating to vacuum pumping apparatus - Google Patents
Improvements in or relating to vacuum pumping apparatusInfo
- Publication number
- GB815070A GB815070A GB253056A GB253056A GB815070A GB 815070 A GB815070 A GB 815070A GB 253056 A GB253056 A GB 253056A GB 253056 A GB253056 A GB 253056A GB 815070 A GB815070 A GB 815070A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pump
- process chamber
- container
- pumps
- flash
- 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
Links
- 238000005086 pumping Methods 0.000 title abstract 5
- 238000000034 method Methods 0.000 abstract 4
- 210000003800 Pharynx Anatomy 0.000 abstract 2
- 238000009792 diffusion process Methods 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
815,070. Vacuum pumping apparatus. EDWARDS HIGH VACUUM Ltd. Jan. 22, 1957 [Jan. 25, 1956], No. 2530/56. Class 71. A vacuum pumping apparatus comprises a container divided into a process chamber 20 to be evacuated, and a chamber 21 housing flash boiler operated pumps, by a partition 23 having a large throat aperture 24. A cooling tube 22 surrounds the wall of that part of the container housing the pumps to provide a condensing surface for the pumps and the throat 24 may be outwardly flared as at 25 to form an annular pumping space, the flared portion 25 also being cooled. An outlet duct 29 leads from the pumping space to a further flash boiler operated pump 30 which is connected by a pipe 31 to a suitable Fore-pump. The flash boiler operated pumps have flash boilers 27 and vapour nozzles 26 and may be of the type described in Specification 586,516. Such an arrangement of apparatus provides direct access between the process chamber and pump without the normal duct, traps, valves &c., between these parts and when it is required to remove or replace articles in the process chamber it is merely necessary to interrupt the operation of the flash boilers. In a modified form the pump is positioned below the process chamber communication between the two being by an annular aperture. In such an arrangement the further pump 30 may be positioned in the container. The Provisional Specification describes also an arrangement for housing a diffusion pump in the container with a valve plate which may be moved across the aperture between the two chambers. The diffusion pump may be of the type described in Specification 806,788.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB815070A true GB815070A (en) | 1959-06-17 |
Family
ID=1627348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB253056A Expired GB815070A (en) | 1956-01-25 | Improvements in or relating to vacuum pumping apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB815070A (en) |
-
1956
- 1956-01-25 GB GB253056A patent/GB815070A/en not_active Expired
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