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  2. Vacuum pump - Wikipedia

    en.wikipedia.org/wiki/Vacuum_pump

    Vacuum pumps are combined with chambers and operational procedures into a wide variety of vacuum systems. Sometimes more than one pump will be used (in series or in parallel) in a single application. A partial vacuum, or rough vacuum, can be created using a positive displacement pump that transports a gas load from an inlet port to an outlet ...

  3. Wolfgang Gaede - Wikipedia

    en.wikipedia.org/wiki/Wolfgang_Gaede

    In 1913 he received a professorship at the University of Freiburg. In the following six years, he invented the momentum transfer pump (molecular pump) and a mercury diffusion pump. In 1919, Gaede joined the Karlsruhe Institute of Technology as a professor of experimental physics, [2] where he worked in the following research areas: Vacuum ...

  4. Sprengel pump - Wikipedia

    en.wikipedia.org/wiki/Sprengel_pump

    A pump of this type is capable of producing high vacuum in which the pressure is 1 mPa. [1] The Sprengel pump is a vacuum pump that uses drops of mercury falling through a small-bore capillary tube to trap air from the system to be evacuated. [Note 1] It was invented by Hanover-born chemist Hermann Sprengel in 1865 while he was working in ...

  5. Scroll compressor - Wikipedia

    en.wikipedia.org/wiki/Scroll_compressor

    A scroll compressor (also called spiral compressor, scroll pump and scroll vacuum pump) is a device for compressing air or refrigerant. [1] It is used in air conditioning equipment, as an automobile supercharger (where it is known as a scroll-type supercharger ) and as a vacuum pump .

  6. Turbomolecular pump - Wikipedia

    en.wikipedia.org/wiki/Turbomolecular_pump

    The system is an axial compressor that puts energy into the gas, rather than a turbine, which takes energy out of a moving fluid to create rotary power, thus "turbomolecular pump" is a misnomer. Gas captured by the upper stages is pushed into the lower stages and successively compressed to the level of the fore-vacuum (backing pump) pressure.

  7. Van Musschenbroek vacuum pump - Wikipedia

    en.wikipedia.org/wiki/Van_Musschenbroek_Vacuum_Pump

    The van Musschenbroek vacuum pump is an instrument from the late 17th century constructed by the Dutch craftsman Johannes Joosten van Musschenbroek . A series of pumps were designed and produced over the years, with the 1698-model as one of the more prominent examples. It was based on an air pump design by Wolferdus Senguerdius . [1]

  8. Liquid-ring pump - Wikipedia

    en.wikipedia.org/wiki/Liquid-ring_pump

    Single-stage vacuum pumps typically produce vacuum to 35 torr (mm Hg) or 47 millibars (4.7 kPa), and two-stage pumps can produce vacuum to 25 torr, assuming air is being pumped and the ring-liquid is water at 15 °C (59 °F) or less. Dry air and 15 °C sealant-water temperature is the standard performance basis, which most manufacturers use for ...

  9. Vacuum ejector - Wikipedia

    en.wikipedia.org/wiki/Vacuum_Ejector

    A vacuum ejector, or simply ejector, or aspirator, is a type of vacuum pump, which produces vacuum by means of the Venturi effect.. In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area.