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GB773456A - Improvements in or relating to vapour traps for use with diffusion pumps - Google Patents

Improvements in or relating to vapour traps for use with diffusion pumps

Info

Publication number
GB773456A
GB773456A GB12012/55A GB1201255A GB773456A GB 773456 A GB773456 A GB 773456A GB 12012/55 A GB12012/55 A GB 12012/55A GB 1201255 A GB1201255 A GB 1201255A GB 773456 A GB773456 A GB 773456A
Authority
GB
United Kingdom
Prior art keywords
plate
vapour
relating
april
condensation
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
GB12012/55A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB773456A publication Critical patent/GB773456A/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
    • F04F9/06—Arrangement of vapour traps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

773,456. Condensation pumps. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 26, 1955 [April 29, 1954], No. 12012/55. Class 71 A vapour trap 4 normally maintained at below -40‹C and located between a condensation, pump 1 and a vessel 10 being evacuated comprises a cooling plate 8 in the path of the reverse flowing vapours and is adapted so as to be maintained at such a temperature, e.g.; above -30‹C that the vapour condenses thereon in the liquid but not the solid phase. The plate 7 is cooled by liquid air in a chamber 5 connected therewith by a metal conductor 7. In a modification the conductor 11, Fig. 2 (not shown) is wrapped with an electric heating coil whereby temperature control of the plate 8 is enhanced.
GB12012/55A 1954-04-29 1955-04-26 Improvements in or relating to vapour traps for use with diffusion pumps Expired GB773456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL773456X 1954-04-29

Publications (1)

Publication Number Publication Date
GB773456A true GB773456A (en) 1957-04-24

Family

ID=19829924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12012/55A Expired GB773456A (en) 1954-04-29 1955-04-26 Improvements in or relating to vapour traps for use with diffusion pumps

Country Status (1)

Country Link
GB (1) GB773456A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137551A (en) * 1959-10-02 1964-06-16 John T Mark Ultra high vacuum device
US3232031A (en) * 1962-08-28 1966-02-01 Nat Res Corp Diffusion pump cold trap

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137551A (en) * 1959-10-02 1964-06-16 John T Mark Ultra high vacuum device
US3232031A (en) * 1962-08-28 1966-02-01 Nat Res Corp Diffusion pump cold trap

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