GB1001738A - Rotary vacuum pumps - Google Patents

Rotary vacuum pumps

Info

Publication number
GB1001738A
GB1001738A GB13363/64A GB1336364A GB1001738A GB 1001738 A GB1001738 A GB 1001738A GB 13363/64 A GB13363/64 A GB 13363/64A GB 1336364 A GB1336364 A GB 1336364A GB 1001738 A GB1001738 A GB 1001738A
Authority
GB
United Kingdom
Prior art keywords
unit
units
pump
cam
chamber
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
GB13363/64A
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.)
New York Air Brake LLC
Original Assignee
New York Air Brake LLC
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 New York Air Brake LLC filed Critical New York Air Brake LLC
Publication of GB1001738A publication Critical patent/GB1001738A/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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/32—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in groups F04C2/02 and relative reciprocation between co-operating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/22—Compensation of inertia forces
    • F16F15/24—Compensation of inertia forces of crankshaft systems by particular disposition of cranks, pistons, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

1,001,738. Rotary vacuum pumps. NEW YORK AIR BRAKE CO. April 1, 1964 [April 3, 1963], No. 13363/64. Heading F1F. A rotary-vacuum pump comprises three pumping units 17, 18, 19, Fig. 2, of gyrating piston type, mounted on a common shaft 21 with the end units 17, 19 identical with each other and approximately half the length of the intermediate units 18. Each unit comprises a circular cam 23, Fig. 1, eccentrically mounted on the shaft 21 and closely embraced by a strap 24 formed with a valve piston 25 guided in a circular guide pin 26 supported at its ends in a removable partition of the housing 11 and an end cover therefor. To provide a shoulder on which the partition rests the unit 18 is slightly less in diameter than the units 17, 19 and in compensation therefor slightly more than twice the length of each of these units. Air from the chamber 36 to be evacuated is sucked through a cored opening 27 and port 28 in the valve piston 25 into the pumping chamber 22 and discharged through a valved outlet 31. The pump units 17, 18, 19 may be connected in parallel to the chamber 36 or alternatively the pump units 17, 18 may be connected in parallel and discharge into the unit 19 so that the pump operates as a two-stage pump. The mass of the cam 23 of the unit 19 is identical with that of the unit 17 and half that of the unit 18 with the masses identically distributed except that the cam of the unit 18 is 180 degrees out of phase with respect to the units 17, 19 so that during operation of the pump, the pump is rotationally balanced. The three valve pistons may all be directed upwardly, as shown in Fig. 2, or alternatively the valve piston of the unit 18 may be directed downwardly. Each unit is surrounded by a water jacket 33 having an inlet 34 and an outlet 35. It is stated that much higher pumping speeds and greater volumetric displacements may be achieved.
GB13363/64A 1963-04-03 1964-04-01 Rotary vacuum pumps Expired GB1001738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US270211A US3173606A (en) 1963-04-03 1963-04-03 Pump

Publications (1)

Publication Number Publication Date
GB1001738A true GB1001738A (en) 1965-08-18

Family

ID=23030374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13363/64A Expired GB1001738A (en) 1963-04-03 1964-04-01 Rotary vacuum pumps

Country Status (2)

Country Link
US (1) US3173606A (en)
GB (1) GB1001738A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127489A (en) * 1982-09-28 1984-04-11 Plenty Ltd Rotary pump
GB2232445A (en) * 1989-05-09 1990-12-12 Medizin Labortechnik Veb K A multi-stage vacuum pump
CN104047859A (en) * 2014-06-27 2014-09-17 浙江神工真空设备制造有限公司 Secondary sliding valve vacuum pump

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499764A (en) * 1982-09-10 1985-02-19 Badger Meter, Inc. Modular metering apparatus
WO2007003887A2 (en) * 2005-06-30 2007-01-11 E.A. Technical Services Limited Orbiting piston machines
JP2009500554A (en) * 2005-06-30 2009-01-08 イー エー テクニカル サーヴィスィズ リミテッド Orbiting piston machine
US8287249B2 (en) * 2008-12-19 2012-10-16 Gardner Denver Thomas, Inc. Two-stage membrane pump with economical inlet port design
WO2018027801A1 (en) * 2016-08-11 2018-02-15 姚镇 Rotating system, and fluid motor, compressor, pump and engine using same
WO2017201895A1 (en) * 2016-05-25 2017-11-30 姚镇 Rotating system, and fluid motor, compressor, pump and engine using same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1236343A (en) * 1958-09-24 1960-07-15 Heraeus Gmbh W C Rotary-piston vacuum pump whose piston, sealed by oil, is eccentrically arranged on an axis
US3107047A (en) * 1962-03-07 1963-10-15 Heraeus Gmbh W C Vacuum pump unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127489A (en) * 1982-09-28 1984-04-11 Plenty Ltd Rotary pump
GB2232445A (en) * 1989-05-09 1990-12-12 Medizin Labortechnik Veb K A multi-stage vacuum pump
CN104047859A (en) * 2014-06-27 2014-09-17 浙江神工真空设备制造有限公司 Secondary sliding valve vacuum pump

Also Published As

Publication number Publication date
US3173606A (en) 1965-03-16

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