GB719990A - Vacuum producing equipment - Google Patents

Vacuum producing equipment

Info

Publication number
GB719990A
GB719990A GB26092/52A GB2609252A GB719990A GB 719990 A GB719990 A GB 719990A GB 26092/52 A GB26092/52 A GB 26092/52A GB 2609252 A GB2609252 A GB 2609252A GB 719990 A GB719990 A GB 719990A
Authority
GB
United Kingdom
Prior art keywords
ejector
suction inlet
air
pump
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
Application number
GB26092/52A
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.)
Nash Engineering Co
Original Assignee
Nash Engineering Co
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 Nash Engineering Co filed Critical Nash Engineering Co
Publication of GB719990A publication Critical patent/GB719990A/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
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/461—Adjustable nozzles
    • 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
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

719,990. Centrifugal pumps. NASH ENGINEERING CO. Oct. 17, 1952 [Oct. 18, 1951], No. 26092/52. Class 110(1) [Also in Group XXVIII] A vacuum apparatus comprises a two-stage liquid ring pump 10, Fig. 1, such as those described in Specifications 324,249 and 324,286. [both in Class 110(i)], drawing working gas at atmospheric pressure e.g., steam or air through a filter 36, a valved duct 34 and a nozzle 54. Fig. 3, together with an axially spaced diffuser 56 of an ejector 28 having its suction inlet 42 connected by a duct 38 to the system to be evacuated. In operation the pump 10 draws through a valved by-pass 98 until a gauge 40 registers a vacuum of 28.5 inches mercury gauge whereupon the by-pass is closed and the ejector increases the vacuum to 29.5 inches. The pump 10 normally discharges through a valved duct 102 to atmosphere but when evacuating gases which it is not desired should be mixed with air in the apparatus valves 32, 104 are closed and a valve 108 is opened to utilize the pump discharge at atmospheric pressure as working gas for the ejector. In a modification the suction inlet of the ejector is connected to the discharge end of a second ejector using air at atmospheric pressure as the working fluid and having its suction inlet connected to the discharge end of a third ejector also using atmospheric air as the working fluid and having its suction inlet connected to the system being evacuated.
GB26092/52A 1951-10-18 1952-10-17 Vacuum producing equipment Expired GB719990A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US719990XA 1951-10-18 1951-10-18

Publications (1)

Publication Number Publication Date
GB719990A true GB719990A (en) 1954-12-08

Family

ID=22104918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26092/52A Expired GB719990A (en) 1951-10-18 1952-10-17 Vacuum producing equipment

Country Status (1)

Country Link
GB (1) GB719990A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935243A (en) * 1955-12-09 1960-05-03 N G N Electrical Ltd Vacuum pumping apparatus
RU2715297C1 (en) * 2019-09-10 2020-02-26 Акционерное общество "Новомет-Пермь" Installation for surface pumping of gas-liquid mixture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935243A (en) * 1955-12-09 1960-05-03 N G N Electrical Ltd Vacuum pumping apparatus
RU2715297C1 (en) * 2019-09-10 2020-02-26 Акционерное общество "Новомет-Пермь" Installation for surface pumping of gas-liquid mixture

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