GB2066900A - Ejector - Google Patents

Ejector

Info

Publication number
GB2066900A
GB2066900A GB8104652A GB8104652A GB2066900A GB 2066900 A GB2066900 A GB 2066900A GB 8104652 A GB8104652 A GB 8104652A GB 8104652 A GB8104652 A GB 8104652A GB 2066900 A GB2066900 A GB 2066900A
Authority
GB
United Kingdom
Prior art keywords
nozzle
nozzles
diameter
inlet
ejector
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
GB8104652A
Other versions
GB2066900B (en
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.)
Piab AB
Original Assignee
Piab AB
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 Piab AB filed Critical Piab AB
Publication of GB2066900A publication Critical patent/GB2066900A/en
Application granted granted Critical
Publication of GB2066900B publication Critical patent/GB2066900B/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
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F04F5/20—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating
    • F04F5/22—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating of multi-stage 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

Multi-ejector having at least one set of between two and four nozzles (7-10) arranged in series in order of size in the flow direction, the smallest nozzle (7) constituting the first nozzle. The novel feature of the present multi-ejector resides in the fact that by using the below given connections between the inlet and outlet diameters of the nozzles as well as the distances between adjacent nozzles starting from the inlet diameter (a) of the first nozzle (7) there have been obtained negative pressures amounting to between 7 and 10% of actual air pressure when using a positive pressure of between 3.7 and 6.0 kilopounds per square centimeters. Nozzle Inlet Outlet Distances to Diameter Diameter succeeding nozzles First (7) a 1.5a 0a Second (8) 2.1-2.2a 2.3-2.4a 5a Third (9) 3.6-3.7a 4.0-4.1a 2.5a Fourth (10) 4.5-4.6a 5.6-5.7a
GB8104652A 1979-06-15 1980-06-12 Ejector Expired GB2066900B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7905309A SE427954B (en) 1979-06-15 1979-06-15 EJECTOR

Publications (2)

Publication Number Publication Date
GB2066900A true GB2066900A (en) 1981-07-15
GB2066900B GB2066900B (en) 1983-04-20

Family

ID=20338304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8104652A Expired GB2066900B (en) 1979-06-15 1980-06-12 Ejector

Country Status (6)

Country Link
JP (1) JPS56500814A (en)
AU (1) AU549039B2 (en)
DE (1) DE3049647T1 (en)
GB (1) GB2066900B (en)
SE (1) SE427954B (en)
WO (1) WO1980002863A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248221A (en) * 1990-08-14 1992-04-01 Portsmouth Tech Consult Vacuum gripper device.
GB2262135A (en) * 1991-11-27 1993-06-09 Dan Greenberg Multi ejector vacuum pump

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3025525A1 (en) * 1980-07-05 1982-01-28 Jürgen 4477 Welver Volkmann EJECTOR DEVICE
DE3431240A1 (en) * 1984-08-24 1986-03-06 Michael 4150 Krefeld Laumen REFRIGERATION MACHINE OR HEAT PUMP AND JET PUMP HERE
SE466561B (en) * 1988-06-08 1992-03-02 Peter Tell MULTIEJEKTORANORDNING

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1729794A (en) * 1929-10-01 Injector ptjmp
FR361049A (en) * 1905-11-27 1906-05-14 Westinghouse Electric Corp Advanced diffuser system for ejector
DE321704C (en) * 1916-06-10 1920-06-11 British Westinghouse Electric Jet apparatus for elastic equipment
DE389520C (en) * 1918-08-13 1924-02-11 Kurt Hoefer Dr Ing Jet machine
DE561872C (en) * 1929-08-22 1932-10-19 Schmidt Paul Conveying liquids at high pressure by means of liquid jet pumps
US2078614A (en) * 1935-02-05 1937-04-27 G & J Weir Ltd Multistage ejector
SE370765B (en) * 1973-12-05 1974-10-28 Piab Ab
DE3025525A1 (en) * 1980-07-05 1982-01-28 Jürgen 4477 Welver Volkmann EJECTOR DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248221A (en) * 1990-08-14 1992-04-01 Portsmouth Tech Consult Vacuum gripper device.
GB2262135A (en) * 1991-11-27 1993-06-09 Dan Greenberg Multi ejector vacuum pump

Also Published As

Publication number Publication date
AU6050480A (en) 1981-01-05
SE427954B (en) 1983-05-24
AU549039B2 (en) 1986-01-09
GB2066900B (en) 1983-04-20
JPS56500814A (en) 1981-06-18
WO1980002863A1 (en) 1980-12-24
SE7905309L (en) 1980-12-16
DE3049647T1 (en) 1982-02-25
DE3049647C2 (en) 1991-08-01

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20000611