FR2319035A1 - Vessel evacuation appts. using cryogenic pump - has gas molecule trap plate connected to vessel by double walled cooled nozzle - Google Patents

Vessel evacuation appts. using cryogenic pump - has gas molecule trap plate connected to vessel by double walled cooled nozzle

Info

Publication number
FR2319035A1
FR2319035A1 FR7522799A FR7522799A FR2319035A1 FR 2319035 A1 FR2319035 A1 FR 2319035A1 FR 7522799 A FR7522799 A FR 7522799A FR 7522799 A FR7522799 A FR 7522799A FR 2319035 A1 FR2319035 A1 FR 2319035A1
Authority
FR
France
Prior art keywords
vessel
plate
nozzle
cryogenic pump
appts
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.)
Granted
Application number
FR7522799A
Other languages
French (fr)
Other versions
FR2319035B1 (en
Inventor
Guy Mongodin
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.)
PHYSIMECA
Original Assignee
PHYSIMECA
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 PHYSIMECA filed Critical PHYSIMECA
Priority to FR7522799A priority Critical patent/FR2319035A1/en
Publication of FR2319035A1 publication Critical patent/FR2319035A1/en
Application granted granted Critical
Publication of FR2319035B1 publication Critical patent/FR2319035B1/fr
Granted 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/06—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means
    • F04B37/08—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means by condensing or freezing, e.g. cryogenic pumps

Abstract

The equipment evacuates a vessel using a cryogenic pump with a refrigerated plate for trapping molecules of gas. This plate (3) is connected to the vessel (1) by a double-walled nozzle (5) joined to the latter and cooled by the circulation of liquid nitrogen or other suitable medium. The plate is mounted outside the nozzle and opposite and set back from an opening in the side of it. Dimensions are such that radiation reaching the plate emanates principally if not entirely from the cooled interior wall of the connecting nozzle. The axis of the housing assommodating the plate can be at right angles to that of the nozzle, and the housing can have an internal cooled wall.
FR7522799A 1975-07-22 1975-07-22 Vessel evacuation appts. using cryogenic pump - has gas molecule trap plate connected to vessel by double walled cooled nozzle Granted FR2319035A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7522799A FR2319035A1 (en) 1975-07-22 1975-07-22 Vessel evacuation appts. using cryogenic pump - has gas molecule trap plate connected to vessel by double walled cooled nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7522799A FR2319035A1 (en) 1975-07-22 1975-07-22 Vessel evacuation appts. using cryogenic pump - has gas molecule trap plate connected to vessel by double walled cooled nozzle

Publications (2)

Publication Number Publication Date
FR2319035A1 true FR2319035A1 (en) 1977-02-18
FR2319035B1 FR2319035B1 (en) 1978-07-28

Family

ID=9158188

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7522799A Granted FR2319035A1 (en) 1975-07-22 1975-07-22 Vessel evacuation appts. using cryogenic pump - has gas molecule trap plate connected to vessel by double walled cooled nozzle

Country Status (1)

Country Link
FR (1) FR2319035A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262279A (en) * 1964-10-09 1966-07-26 Little Inc A Extreme high vacuum apparatus
FR1557891A (en) * 1968-01-05 1969-02-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262279A (en) * 1964-10-09 1966-07-26 Little Inc A Extreme high vacuum apparatus
FR1557891A (en) * 1968-01-05 1969-02-21

Also Published As

Publication number Publication date
FR2319035B1 (en) 1978-07-28

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Legal Events

Date Code Title Description
ST Notification of lapse