GB596964A - Improvements in or relating to high vacuum diffusion or condensation pumps - Google Patents

Improvements in or relating to high vacuum diffusion or condensation pumps

Info

Publication number
GB596964A
GB596964A GB2026345A GB2026345A GB596964A GB 596964 A GB596964 A GB 596964A GB 2026345 A GB2026345 A GB 2026345A GB 2026345 A GB2026345 A GB 2026345A GB 596964 A GB596964 A GB 596964A
Authority
GB
United Kingdom
Prior art keywords
per
casing
thermal conductivity
pump
pumps
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
Application number
GB2026345A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heraeus Noblelight Analytics Ltd
Original Assignee
Cathodeon Ltd
Filing date
Publication date
Application filed by Cathodeon Ltd filed Critical Cathodeon Ltd
Publication of GB596964A publication Critical patent/GB596964A/en
Expired legal-status Critical Current

Links

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)

Abstract

596,964. Diffusion pumps. LIEBMANN, G., and CATHODEON, Ltd. Aug. 8, 1945, No. 20263. [Class 71] In a high vacuum diffusion pump of the jet type, the outer vacuum-tight casing 1 of the pump assembly is made from a metal having a low thermal conductivity not exceeding 0.07 gm. cal. per sec. per cm.<2> per degrees C. per cm. The pump comprises a lagged electricallyheated boiler chamber 4 supporting oil vapour guide tubes 15, 16 which with cowls 23, 28 form jets 24, 29. Baffles 31, 34 of relatively high thermal conductivity supported by the casing serve to condense oil vapour and prevent it from entering the vessel to be evacuated which is connected to the casing top. The casing wall is 1 mm. thick, being reduced to .05 mm. at the ends 2, 3 and on account of its low thermal conductivity avoids the necessity of a watercooled jacket as is usual in such pumps. A backing pump is connected to a conduit 9.
GB2026345A 1945-08-08 Improvements in or relating to high vacuum diffusion or condensation pumps Expired GB596964A (en)

Publications (1)

Publication Number Publication Date
GB596964A true GB596964A (en) 1948-01-14

Family

ID=1735325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2026345A Expired GB596964A (en) 1945-08-08 Improvements in or relating to high vacuum diffusion or condensation pumps

Country Status (1)

Country Link
GB (1) GB596964A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668005A (en) * 1952-03-05 1954-02-02 Cons Vacuum Corp High vacuum diffusion pump
US4108576A (en) * 1976-07-06 1978-08-22 Varian Associates, Inc. Low cost, thermally efficient diffusion pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668005A (en) * 1952-03-05 1954-02-02 Cons Vacuum Corp High vacuum diffusion pump
US4108576A (en) * 1976-07-06 1978-08-22 Varian Associates, Inc. Low cost, thermally efficient diffusion pump

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